What is Laser Diode sanyo_databook.pdf

8/11/2019 What is Laser Diode sanyo_databook.pdf

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What is Laser Diode

SANYO currently markets AlGaAs infrared laser diodes in the 780 830 nm wavelength, as wellas AlGaInP based red laser diodes in the 635 675 nm wavelength. SANYO realized 635 nm

AlGaInP laser diode for the first time in the world. The low operating current and high operating

temperature are realized by using misoriented substrate and MQW (Strain compensated) active

layer. With unique structures developed by SANYO, providing the following features, these laser

diodes are highly rated in a broad range of applications including compact discs, CD-R/RW, DVD

systems, bar code scanners, laser pointers and printers. SANYO laser diodes are also compatible

with multimedia and other new optical equipment on which advanced information societies in

future depend.

A full line-up includes index guided short-wavelength, low-noise, high output power

Long life and high reliability

A stabilized fundamental transverse mode

9 mm, 5.6 mm diameter packages and frame type

Pin connections compatible with various power supply systems

The term laser is an acronym that stands for "Light Amplification by Stimulated Emission of

Radiation".

SANYO laser diode structure and basic element structure are listed below.

Can type

Laser diode structure

Element structure

Window

Cap

Laser chip

PIN photodiode

Stem

Heatsink

Frame type

plastics

Laser chip

PIN photodiode

Heat radiation fin

Electrode

Cap layer

Cladding layer

Active layer(MQW structure) *

*MQW : Multiple Quantum Well

Cladding layer

Substrate(Misoriented substrate)

Electrode

Current blocking layer

Cavity length

SANYO Laser Diodes Support Advanced Information Society

1


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SANYO Red laser diode line-up

Summary of Features (Typ.)

Red Laser Diode

Tc = 25C

*Under development

Lasing Wavelength p(nm)

Outp

utPowerPo(mW)

NEW

NEW

3

5

10

20

30

635 650 670

7

655 675660

DL-4038- 26

DL-3038-033/ 34DL-3148- 33/ 34

DL-3038-013

DL-3148- 13

DL-3039-011DL-3149- 57

DL-4147- 61

DL-3107-165

DL-3147- 65DL-3147- 85DL-3247- 65

DL-5147-041*DL-LS103570 *DL-LS1027

DVD-R/RW

DVD-P/ROM

DVD Frame Laser

DL-3147- 31DL-3147-021

DL-3038-023DL-3148- 23

DL-4038- 31DL-4038-021DL-4148- 21

New product

*Under development

Part No. Main Feature

AbsoluteMaximum Ratings

Light

Output

Operating

Temperature

Threshold

Current

OperatingCurrent

LasingWavelength

Beam Divergence

Parallel PerpendicularRatings

Package

Dimension

Type

Pin

Connection

TypePo

mW

Topr

C

Ith

mA

lop

mA nm mW

Po

Electro-Optical Characteristics

MonitorCurrent

lm

mA

***

DL-3038-013

DL-3038-023

DL-3038-033/ 34

DL-4038-021

DL-4038- 31

DL-4038- 26

DL-LS1035

DL-3148- 13

DL-4148- 21

DL-3148- 23

DL-3148- 33/ 34

DL-3147-021

DL-3147- 31

DL-3147- 65

DL-3147- 85

DL-3247- 65

DL-4147- 61

DL-3107-165

DL-5147-041

DL-LS1027

DL-3039-011DL-3149- 57

DL-4039-011

DL-LS1018

5mW at 40C

3mW at 40C

5mW at 50C

10mW at 40C

10mW at 50C

20mW at 40C

30mW at 40C

5mW at 40C

10mW at 40C

3mW at 40C

5mW at 50C

5mW at 40C

5mW at 50C

5mW at 70C

5mW at 80C

5mW at 70C

10mW at 70C

5mW at 70C

30mW at 60C

70mW at 70C

5mW at 60C5mW at 60C

10mW at 50C

10mW ,2Beam

7

3

5

10

10

25

35

7

12

3

5

5

7

7

7

7

12

7

30

50

57

10

10x2

10 to +40

10 to +40

10 to +50

10 to +40

10 to +50

10 to +40

10 to +40

10 to +40

10 to +40

10 to +40

10 to +50

10 to +40

10 to +50

10 to +70

10 to +80

10 to +70

10 to +70

10 to +70

10 to +60

10 to +70

10 to +6010 to +60

10 to +50

10 to +60

30

20

30

35

35

40

50

30

40

20

40

30

25

25

25

25

30

20

45

45

3025

40

40

45

25

40

55

55

70

90

45

60

25

55

45

35

35

35

35

50

30

80

110

4540

60

60

635

650

660

655

670

675

0.20

0.20

0.20

0.15

0.15

0.20

0.30

0.20

0.15

0.15

0.20

0.40

0.20

0.20

0.20

0.20

0.30

0.10

0.03

1.201.50

0.15

0.15

8.0

8.0

8.0

8.0

8.0

7.0

7.0

8.0

8.0

8.0

8.0

7.5

8.0

8.0

8.0

8.0

8.0

8.0

7.0

8.5

8.08.0

8.0

8.0

30

30

30

30

30

28

30

30

30

30

30

30

30

30

30

30

28

30

23

17

3330

30

30

5

3

5

10

10

20

30

5

10

3

5

5

5

5

5

5

10

5

30

50

55

10

10

B

B

B

B

B

B

B

C

C

C

C

C

C

C

C

D

C

I

C

C

BC

C

E

I

I

I, III

I

I, III

I, III

I

I, III

I, III

I, III

I, III

I

I, III

I, II, III

I, II, III

I, II, III

I, II, III

II

I

IV

II, III

I

V

NEW

DL-4039-011*DL-LS10182 Beam (LBP)

*

*

*

2


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SANYO Infrared laser diode line-up

Summary of Features (Typ.)

Infrared Laser Diode

3

80

100

150

785 790 830

15

10

5

DL-3150-103/105 DL-3150-106/107 DL-3180-121

*DL-LS3007

*DL-LS3004 DL-3150-133

DL-4034-154S

DL-3144-005S

DL-3144-007S

DL-4140-001S20

DL-8032-001

DL-7032-001

120 *DL-7140-201H

*DL-7140-201S*DL-7240-201S

*DL-7140-201KNEW

NEW

Lasing Wavelength p(nm)

Outp

utPowerPo(mW)

Export control-regulationsproducts

Under development

New product

Pulse condition

Tc = 25C

*at the power of ratings Export control-regulations products Under development

Part No. Main Feature

AbsoluteMaximum Ratings

Light

Output

Operating

Temperature

Threshold

Current

OperatingCurrent

LasingWavelength

Beam Divergence

Parallel PerpendicularRatings

Package

Dimension

Type

Pin

Connection

TypePo

mW

Topr

C

Ith

mA

lop

mA nm mW

Po

Electro-Optical Characteristics

MonitorCurrent

lm

mA

***

DL-3144-005S

DL-3144-007S

DL-4034-154S

DL-LS2003

DL-4140-001S

DL-7140-201S

DL-7240-201S

DL-7140-201H

DL-7140-201K

DL-3150-103/105

DL-3150-106/107

DL-3180-121

DL-LS3007

DL-LS3004

DL-3150-133

DL-7032-001

DL-8032-001

Low droop

Low droop

10mW at 60C

15mW 2Beam

20mW at 60C

85mW(Pulse)

85mW(Pulse)

120mW(Pulse)

150mW(Pulse)

Frame Laser

Frame Laser

Frame Laser, Low current

Frame Laser, Low current

Frame Laser, 5mW

Frame Laser, 5mW

100mW at 50C

150mW at 50C

8

5

15

15x2

25

80

80

80

80

5

5

5

5

7

7

100

150

10 to +60

10 to +60

10 to +60

10 to +60

10 to +60

10 to +60

10 to +60

10 to +60

10 to +60

10 to +70

10 to +60

10 to +60

10 to +60

10 to +70

10 to +70

10 to +50

10 to +50

25

25

30

30

25

30

30

30

30

35

35

20

20

20

20

50

50

45

35

60

55

60

100

100

100

100

45

45

25

25

30

30

140

185

785

790

830

4.50

0.60

0.40

0.40

0.75

0.25

0.20

0.20

0.20

0.20

0.30

0.30

0.20

0.50

9.0

9.0

9.0

8.0

9.0

8.0

8.0

8.5

8.5

10.5

10.5

11.0

11.0

10.5

10.5

7.0

7.0

25

27

28

25

25

17

17

17

17

35

35

35

35

35

35

18

18

5

3

10

15

20

70

70

70

70

3

3

3

3

5

5

100

150

C

C

A

E

C

C

D

C

C

G/F

F/G

H

G

H

G

A

A

I

I

II

V

I

III

IV

IV

IV

II

II

II

II

II

II

I

I

NEW

NEW

NEW

Frame laser (CD-P/ROM)

Frame laser (CD-P/ROM)

**

*

DL-LS2003

2 Beam (LBP)

CD-R/RW

NEW

NEW

**

3

*


4/22

4

Photograph

Can Type Laser Diodes

Frame Type Laser Diodes

DL-8032DL-7032

DL-4034

DL-3150-105

DL-3150-106

DL-3247

DL-7240 *DL-LS2003

*DL-LS1018

*Under development

*Under development

DL-3150-103

DL-3150-107

*DL-3150-133

*DL-LS3007 *

DL-LS3004

DL-3180-121 DL-3107-165

DL-4039

DL-4038DL-3039

DL-3038

DL-3149

DL-3148

DL-3147DL-3144

DL-7140

DL-5147

DL-4148DL-4147

DL-4140

5.6mm

Frame type (CD) Frame type (CD) Small frame type (CD) Frame type (DVD)

9.0mm (Infrared) 9.0mm (Red) D-shaped stem 5.6mm (2 Beam)

A

F G H I

B C D E


5/22

5

Application

Application

Examples of Applied Systems Applications Products

Laser Pointer

Line Marker, Leveler

Bar-code Scanner

DVD, DVD-R/RW

LaserBeamPrinter

CD, CD-ROM, CD-R/RW

Optical Communication

Point of guide

(Meeting, Exhibition

Sightseeing etc.)

DL-3038-013

DL-3038-023

DL-3147-021

DL-3148- 13

DL-3148- 23

Reference for

construction

(For Parallel line,

For measurementdistance)

Merchandise control

Digital Versatile Disc

(DVD)-ROM, R/RW

Drive

DL-4038-021

DL-4038- 26

DL-3038- 33/-034

DL-4038- 31

DL-4148- 21

DL-LS1035

DL-3038- 33/-034

DL-3039-011

DL-3147- 31

DL-3148- 33/- 34

DL-3149- 57

DL-4038- 31

DL-3107-165DL-3147- 65

DL-3147- 85

DL-3247- 65

DL-4147- 61

DL-LS1027

DL-4039-011

DL-4147- 61

DL-5147-041

DL-LS1035

DVD DVD-R/RW

Image printing

Word printing

DL-3039-011

DL-3149- 57

DL-4039-011

DL-LS1018

DL-3144-005S

DL-3144-007S

DL-4034-154S

DL-LS2003

DL-4140-001S

Red Laser Infrarde Laser

Compact Disc(CD),

-ROM,R/RW Drive

Optical Communication

DL-3150-103/105DL-3150-106/107DL-3180-121DL-3150-133DL-LS3004DL-LS3007

DL-7140-201S

DL-8032-001

DL-7032-001

DL-7140-201SDL-7240-201SDL-7140-201HDL-7140-201K

CD, CD-ROM CD-R/RW

DVD

CD-R/RW


6/22

6

Key Technology

Strain compensated - MQW active layer

Misoriented Substrate

Quantum-barrier*

650~670nm Laser Diode

Tensile strain

Tensile strain

Compressive strain

Quantum-barrier

Quantum-well

Substrate

Quantum-well Tensile strain

Compressive strainQuantum-barrier

Compressive strainQuantum-barrier

Substrate

[100]

[011]

[011]

Misoriented Substrate

Conventional Substrate

*635nm Laser Diode (except DL-LS1035)


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7

Part Number Coding and Pin connection

DL-3 03 8-0 13Laser diode series

Light output

Suffix No.

Pin connection

Max.(mW)

3 :4 :

5 :6 :7 :8 :

720

4050100150

Package dimension (mm)

03 : 9.010 : Frame type(DVD)14 : 5.615 : Frame type(CD)18 : Small frame type(CD)24 : D-shaped stem

Lasing wavelength (nm)0 : 7857901 : 8102 : 8303 : 8704 : 7807 : 6506558 : 6359 : 670675

0 : P-side down ( power supply system)1 : N-side down

(2 power supply systems)2 : N-side down (+ power supply system)

Part Number Coding

LD PD

1 3

2

power supply system

Pin connection

LD PD

1 3

2

2 power supply system

LD PD

1 3

2

+ power supply system

LD

1 3 (NC)no PD

2

+ power supply system

LD1 LD2PD

1 3

4

2 beam + power supply system

I II III

IV V2


8/22


9/22


10/22

10

Absolute maximum ratings

Electric optical characteristics

Definition of Feature

Absolute maximum ratings are levels that can not be exceeded even momentarily

under any external conditions. The levels are stipulated in terms of case temperature Tc = 25C.

1. Light output power (PO)

This is maximum allowable output during

continuous operation. In the drive current

light output characteristics shown in the

figure on the right, there are no kinks or

bends under this light output power.

2. Reverse voltage (VR)

This is maximum allowable voltage with areverse bias applied to the element. The

level is stipulated separately for a laser

diode and a photodiode.

3. Ambient operating temperature (Topr)

This is the maximum ambient temperature

in which the element can operate. The level is defined by case temperature of the

element.

4. Ambient storage temperature (Tstg)

This is the maximum ambient temperature for element storage.

1. Threshold current (Ith)

Although PIF curve distinguishes the LED

light emitting region A from the laser

oscillating region B, the current level thattriggers laser oscillating is the threshold

current. In actuality, Ith is defined as the

point where the straight line in B intersects

the X axis.

2. Rated light output power (Po)

This is recommended light output power

during continuous operation.

3. Operating current (Iop)

This is a current in the forward direction

that is required to generate rated light output power.

4. Monitor current (Im)

This is an output current of the photodiode at rated light output power.

PO

Ou

tputpowerP

Max. rating powerNon-linear

Kink

Kink power

Output power vs. Forward current (PIF)

Forward current IF

B

lopIth

A

PO

Laser

oscillating

region

LED

emitting region


Forward current IF

Outputpowe

rP


11/22

11

5. Differential efficiency (dP/dIop)

This is the increase in light output power per

unit of drive current. The amount is given by

the angle of the straight light output powerline with respect to forward current in the

laser oscillating range.

6. Lasing wavelength ( p)

This is peak lasing wavelength at rated

light output power. The lasing spectrum is

broadly classified as either a single mode

or a multi-mode as shown in the figure on

the right, and peak lasing wavelength is

defined by the maximum spectral intensity

in either mode.

7. Beam divergence angle : Parallel ( ), Perpendicular( )

Light radiating from laser chip diverges as shown in the figure on the lower left. When the

light distribution is measured in the parallel (X axis) and perpendicular (Y axis) directions

with respect to the surface of the PN-junction on laser chip, (a) and (b) are shown in the

figure on the lower right. The beam divergence angle at 1/2 of the peak intensity of the light

distribution (full angle at half maximum) is defined as and .

Single mode

Lasing spectrum

Multi mode

dP/dlop

dlop

dP

Forward current IF


1.0

0.5

1.0

0.5

Light

output power

Angle Angle

Beam divergence ( , )

(a) (b)

Front

Rear

Laser chipPN-junction

Beam divergence

OutputpowerP



12/22

12

This is expressed by a light axis shift with

respect to a reference surface. In a beam

divergent distribution of the parallel andperpendicular directions as shown in the

figure on the right, shifts in both directions are

defined by (a - b)/2.

This is expressed by a shift in

the position of the light emitting

area. X and Y represent the

shift from the center of the

package, while Z represents a

shift with respect to stipulated

positions (a) from a reference

surface to the edge of a laser

diode (LD).

10. Astigmatism (As)

An astigmatism refers to a shift in focus position seen in the perpendicular and parallel

directions on the PN-junction surface of laser chip as shown in the figure on lower left.

11. Droop ( P)

This is the rate of light output power attenuation when a laser is driven by pulsed constantcurrent. The rate is defined by (A - B)/B x 100 % as shown in the figure on the lower right.

8. Light axis off angle : Parallel ( ), Perpendicular ( )

9. Light emission off center point ( X, Y, Z)

1.0

0.5 b

0

Light

output power

Light axis

off angle

Light axis off angle ( , )

Angle

(ab)/2

a

a

ZY

X

Top view

Light emission off center point ( X, Y, Z)

LD facet

Reference plane

Side view

Focus position seenin the perpendiculardirection

Focus position seenin the parallel direction

Laser beam

Laser chip

AstigmatismAs

Astigmatism (As)

B

A

Duty : 10%

Duty : 90%

Time T

600Hz

OutputpowerP

P=(AB)/Bx100%

Droop ( P)



13/22

Precautions for use

13

Precautions for Use

Laser characteristics (wavelength, operating

current) vary with temperature, and variation

is more extreme at shorter wavelength. We

recommend installing an APC circuit to main

tain a constant output because operating

current varies significantly with temperature.

By the same token, laser reliability can be im

proved by designing products based on their

heat release characteristics. Since laser reli

ability falls off steeply at a higher temperature, never allow the case to exceed the op

erating temperature range given in specifica

tions while a laser is in use.

1. Temperature characteristics

25C 50C 70C

Forward current IF

Temperature characteristics of I-L curves

OutputpowerP

3. Measuring light output power

2. Thermal radiation

Make sure that a thermal radiating plate (W 30 x L 30 x t 5 mm) made of aluminum or

some other high thermal conducting materials is mounted to laser diode. The reliabilityof laser diode is closely linked to junction temperature, so reliability rapidly declines at

a higher temperature. Do not overlook thermal radiation.

Thermal radiating plate(Al or Cu)

Use a light power meter to measure light output

power of laser diodes. When measuring with APC

drive, set a power meter at an angle as shown in

the right figure so that a photodiode in a laser

diode is not exposed to reflected light from the

power meter.

Laser diode

Power meter

20


14/22

14

Precautions for Use

(1)

(2)

(3)

(4)

(5)

5. Soldering conditions

Maximum temperature is set at 260C and soldering time is within 3.0 seconds and

minimum clearance of 1.6 mm from the root of a lead is necessary.6. Prevention of breakdown due to static electricity or surge current

Laser diode may be adversely affected by static electricity and surge current and,

consequently causes breakdown of element and reduction of reliability unless the

following cares are taken :

Power supply, installation and measuring equipment should be grounded. A noise

filter or noise-cut transformer is to be provided to power supply input utilized.

During operation, working clothes, hats and shoes should be static-protected when in

use.

Also, a workman body should be static-protected by use of an earth-band or the likeand grounded through high resistance (500 k - 1M ).

A soldering iron should be grounded to protect laser diodes from voltage leak.

Any container for carriage and storage should be static-protected.

Avoid using laser diodes at a place where high frequent surge current may be

generated as an inductive electric field gives breakdown or deterioration. (Avoid being

placed around fluorescent grow lamp, for example).

190

Do not exceed, even momentarily, the maximum ratings.

When laser diode is driven in excess of the maximum ratings, it causes not only instant

breakdown or deterioration but also considerable reduction in reliability.Laser diode may be damaged by surge current generated at power on-off operation.

Check on the transient characteristics of power supply to make sure that such surge

current does not exceed the maximum ratings.

The maximum ratings are specified by case temperature at 25C. Design should be

made well to work with temperature. As temperature goes up, power dissipation as

well as maximum light output power is reduced.

(1)

(2)

4. Absolute maximum ratings

Static protected clothes

Soldering iron with surge protection

Conductive table mat

Conductive floor mat

Humidifier

Grounded band

1M


15/22

15

If current is flowing into the forward direction

and output continues to rise following a kink or

other deviation, then the laser eventuallyreaches facet breakdown (COD) level where

the crystal at the facet melts due to the high

optical density. Special care must be taken in

the handling of red lasers because they may

continue to oscillate with a low power of 2 to 3

mW even after occuring facet breakdown.

There are several ways to tell whether an ele

ment is damaged or destroyed, such as

through a far field pattern or an increase in the

operating current. The life of a laser is significantly curtailed once the element is damaged,

so special care must be taken to avoid not

only excessing current when adjusting the out

put, but surge like static electricity as well.

7. COD (Catastrophic Optical Damage) level

(A) Nomal laser (B) Damaged laser due to COD

COD level

Kink level

Forward current IF


OutputpowerP

Precautions for Use

Near field pattern

Far field pattern

Normal laser

Damaged laser

lop

lop1

Po

Forward current (mA)

OutputPower(mW)

lop2

Near field pattern

Damaged laser due to COD Output power vs. Forward current


16/22

16

ESD data

(1) Measurement circuit

(2) Example of ESD data

Precautions for Use

(Machine model)

R=2M

C=200pFV LD

100

80

60

40

20

00 20 40

Supplied voltage (V)

Judgment : lop 1.5mA

AlGaInP Red laser diode

Aliverate(%)

60 80 100

100

80

60

40

20

00 20 40

Supplied voltage (V)

AlGaAs Infrared laser diode

Aliverate(%)

60 80 100 120


17/22

17

9. Package handling

Package must not be cut off, reworked nor deformed. Do not hold the cap of laserdiode tight, otherwise it may bring about cracks onto the window glass.

Do not touch the surface of the window glass. Any scratch or contamination may result

in reduction of optical characteristics.

Remove small contaminations on the surface softly using a cotton stick with a small

amount of methyl alcohol.

Polarizing characteristics of red lasers vary

with distortions in the active layer. Conven

tional infrared lasers as well as 650 to 675nmlasers oscillate in the TE mode (polarizing di

rection parallel to the junction plane). As

such, special care must be taken when using

polarized optical parts with 635nm laser (ex

cept DL-LS1035) because it oscillates in the

TM mode (polarizing direction parpendicular

to the junction plane).

8. Polarizing characteristics

Y

635nm polarizing direction

650675nm, 780nmpolarizing direction

X

Top view of the stem

(1)

(2)

(3)

Precautions for Use


18/22

18

Packaging

Stem type Laser (300P)

Frame type Laser (1000P)

Packaging

235mm

1

150

tray

192m

m

43mm

Internal box

ESDprotective bag(2tray / bag)

235mm

100

1tray

192m

m

51mm

Internal box

ESDprotective bag(10tray / bag)


19/22

19

This APC drive circuit is used for type Ipin connecting diagram.

When a laser diode (LD) emits light, light current (Im) proportionated to light output

power flows to a monitoring photodiode (PD) and a voltage V1 = Im (R3+R4) generates.

This voltage is sent by the op amp OP1 through a buffer to the op amp OP2.

Reference voltage V2 obtained from constant-voltage diode and volume switch is also

sent to the op amp OP2. The op amp OP2 compares two voltages and then varies base current of output

transistor while controlling the current flowing to laser diode so that V1 = V2 is constantly

maintained. This is how constant light output power is obtained.

Adjustment

Turn volume switch R3 as high as it will go, and set 5 k volume switch so that V2 = 0.

Mount laser diode with power turned off.

Turn power on, and turn 5 k volume switch to the center point while measuring light

output power with a light power meter. Here, light output power should be 1/2 of the

setting level. If difference from the setting level is significant, then turn off power andadjust R3 and R4.

Turn volume switch R3 until light output power matches the setting level.

R1 R4 setting procedure

Set light output range based on the data for laser diode characteristics and then use

the table below to determine proper operating current and monitoring output current

for light output power.

Lightoutput power

Pmax

Pmin

Imax

Imin

Im max

Im min

100k

2.2k

2.2k2.2k

1k

47k5k5V

10 33

470.1

470

2SD600

LDPD

Unit (Resistance : Capacitance : F)

1/2 LA6358N1/2 LA6358N

OP2OP1

12V

GND

R210

R139

R44.7k

R350k

ImV1

V1

V2

1

+

+

+ +

+

1. APC Circuit

Operatingcurrent

Monitoringoutput current

(1)

(2)

(3)

(4)

(1)

Drive Circuit Recommendations

Laser Drive System


20/22


21/22

21

This is an example of an APC circuit for battery-powered Type I pin connection

circuits. It is ideally suited for a low-current DL-3148-023 The reference voltage

here is the voltage between the base and emitter of transistor TR1, and is normally

0.6 volts.

Since the absolute maximum rated power of the DL-3148-023 is 3 mW, the power

adjustment range for the circuit is between 0.5 and 2 mW. Resistors R3 and R4

used for adjusting power are set as outlined below.

Since Im is 0.12 mA at a maximum power of 2 mW, then R4 = VBE / Im = 0.6 / 0.12

= 5k .

Then since R3 determines minimum optical output and Im is 0.03 mA with 0.5mW

of power, then R3 + R4 = VBE / Im = 0.6 / 0.03 = 20k and R3 =15k .

1k(50 )20F

10F 0.6V

LD

4. APC Circuit

C2

3V

GND

10k

15kR3

5kR4

TR2

2SC3383

TR1

PD

2SC3383

C1=1

Laser Drive System

+

+


22/22

The output light from laser diode is visible or invisible, and harmful to a human eye. Avoid looking at the output light of

laser diode directly or even indirectly through a lens while oscillating. When an optical axis is to be adjusted to a laser

beam and outer optical systems, a laser beam should be observed through an infrared TV camera or other equipment.

Particularly when the light is collimated or focused through a lens, safety glasses should be worn and care should be

taken to absolutely protect human eyes from the directly entering beam.

CAUTION THE USE OF OPTICAL INSTRUMENTS WITH THIS PRODUCT WILL INCREASE EYE HAZARD.

Refer to IEC 825-1 and 21 CFR 1040.10 - 1040.11 as a radiation safety standard as to laser products.

Safety

I S O

VISIBLE LASER RADIATION-

AVOIDE DIRECT EXPOSURE TO BEAM

AVOID EXPOSURE-Visible laser radiation is emitted from this aperture

Type :

Manufactured :

This product complies with 21 CFR 1040.10

and 1040.11.

TOTTORI SANYO ELECTRIC CO., LTD.LED DIVISION5-318, Tachikawa, Tottori 680-8634 Japan

LASER DIODE

PEAK POWER 50 mW

WAVELENGTH 635-685 nm

CLASS IIIb LASER PRODUCT

LASER DIODE

INVISIBLE LASER RADIATION-

AVOIDE DIRECT EXPOSURE TO BEAM

AVOID EXPOSURE-Invisible laser radiation is emitted from this aperture

LASER DIODE

PEAK POWER 200 mW

WAVELENGTH 780-830 nm

CLASS IIIb LASER PRODUCT

LED Division of Tottori SANYO Electric Co., Ltd. takes pride in providing its customers

with the highest quality LED products possible. We are especially proud of the fact that all

LED products of our company have already obtained the verification of ISO 9001 in ac

cordance with IECQ (IEC Quality Assessment for Electronic Components). The produc

tion system is carried out in one continuous operation, including such processes as syn

thesis of compound semiconductors, single crystal growth and final display assembly. It

is our goal that, by making the best use of such production system, we develop quality

control activities which are supported by the verification of ISO, and offer the products in

100% conformance with our customers specifications.

Our quality assurance activities

for release of continually improving

new products are carried out re

flecting customers desires which

are constantly fed back into our

production lines. Our mass-pro

duction is controlled by standar

dized processes such as mass-

production trial approval, a quality

control method to confirm the trial

products being made identical.

The guarantee shall be applied

only to the products delivered by

our company.

Quality assurance system

Environmental management system

Electronic Device Business Headquarters LED Division of Tottori Sanyo Electric Co.,

Ltd. has already obtained the verification of ISO 14001 in accordance with the assess

ment approval system of Environmental management system. The sphere of ISO 14001

are the development, design, manufacture and sales on the Optoelectoronic device.

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