AKL ´12 EU Innovation Forum High-brilliance Fiber Laser Sources with new NIR Wavelengths T h e P o w e r t o T r a n s f o r m TM High Power Fiber Lasers and Amplifiers Dipl.-Wirtschafts-Ing. (FH) Tim Westphäling
AKL ´12 EU Innovation Forum
High-brilliance Fiber Laser Sources with new
NIR Wavelengths
T h e P o w e r t o T r a n s f o r m TM
High Power Fiber Lasers and Amplifiers
Dipl.-Wirtschafts-Ing. (FH) Tim Westphäling
2 Copyright IPG Photonics
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1. Overview of IPG´s different Fiber Laser types
2. Setup of Erbium doped Fiber Lasers (1.567 nm wavelength)2.1. Single Mode2.2. Multi Mode
3. Setup of Thulium doped Fiber Lasers (1.940 nm wavelength)
4. Summary
Overview
3 Copyright IPG Photonics
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Overview of IPG´s fiber laser families
Erbium
Fiber Lasers Thulium
Fiber Lasers
532 980 1070 1550 2000
1W
100W
100KW
10W
1KW
GLR
GLPM
Wavelength ( nm )
La
se
r P
ow
er
DLR
DLM
YLS
YLS-QCW
YLR
YLR-QCW
YLM
YLP-HP
YLP
Ytterbium
Fiber Lasers
Diode
Lasers
green
Fiber Lasers
TLR
TLM
ELS
ELR
ELM
ELP
4 Copyright IPG Photonics
Overview of IPG´s fiber laser families
-
Erbium
Fiber Lasers Thulium
Fiber Lasers
532 980 1070 1550 2000
1W
100W
100KW
10W
1KW
GLR
GLPM
Wavelength ( nm )
La
se
r P
ow
er
DLR
DLM
YLS
YLS-QCW
YLR
YLR-QCW
YLM
YLP-HP
YLP
Ytterbium
Fiber Lasers
Diode
Lasers
green
Fiber Lasers
TLR
TLM
ELS
ELR
ELM
ELP
5 Copyright IPG Photonics
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Overview of IPG´s fiber laser families
Erbium
Fiber Lasers Thulium
Fiber Lasers
532 980 1070 1550 2000
1W
100W
100KW
10W
1KW
GLR
GLPM
Wavelength ( nm )
La
se
r P
ow
er
DLR
DLM
YLS
YLS-QCW
YLR
YLR-QCW
YLM
YLP-HP
YLP
Ytterbium
Fiber Lasers
Diode
Lasers
green
Fiber Lasers
TLR
TLM
ELS
ELR
ELM
ELP
6 Copyright IPG Photonics
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• Compact and monolithicDesign
• Parallel adjustment of LDM • Monomode-Beam quality• M2 < 1.05• Robust mechanical setup• Thermal non-sensitive• no adjustment /
maintenance
609 May 2012
Concept of Erbium doped fiber lasers (1.5 µm wavelength)
7 Copyright IPG Photonics
Multimode, Broadband Pumpdiode 975nm, NA 0.12, M2 >20 Fiber Laser 1 / 1,5µm, NA 0.06, M2 = 1
Low Beam Quality High Beam Quality
Conversion of Brightness
709 May 2012
8 Copyright IPG Photonics
IPG Photonics Confidential Information
Laser diode Packaging
PLDs 5-25
Optical Preform
Silica based glass
MCVD method
Dope with rare earth ions
Fiber Draw
Draw towers
Active fibers only
>200 different fibers
Fiber Block
Pod of active fibers
Modules
Up to 800-1000 Watts (1070 nm)
Final Assembly
Coupling
Final burn in
Shipment
Components
Bragg Gratings, Isolators
Couplers
Fab Operations
Semiconductor Wafer Growth
Diode Processing
Chip Mounting
Burn-In
809 May 2012
Needed Components for Fiber Laser Production
9 Copyright IPG Photonics
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Single Mode Fiber Laser Rack / Module
10 Copyright IPG Photonics09 May 2012 10
3U Housing of 120 W Erbium doped Fiber Laser
11 Copyright IPG Photonics09 May 2012 11
Collimator output of TLR-120 and ELR-120
12 Copyright IPG Photonics
IPG Fiber Laser Modul Combination
12 09.05.2012 IPG Photonics Confidential Information
+ + + + = XLXXLXXXL
Modules are combined according to the requested Power = scaleable and upgradeable Power � custom design
13 Copyright IPG Photonics09 May 2012 13
ELS-500 shipped to ILT beginning of 2012
1567 nm, 500 W, Multimode Fiber Output
First Multimode Fiberlaser @ 1.5 µm wavelengthwith 500 W Output power
14 Copyright IPG Photonics09 May 2012 14
Fiber connector in QBH design
15 Copyright IPG Photonics09 May 2012 15
Top Hat Beam Profile
• Realized with 200 µm Multimode Feeding Fiber of ELS 500
16 Copyright IPG Photonics
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Overview of IPG´s fiber laser families
Erbium
Fiber Lasers Thulium
Fiber Lasers
532 980 1070 1550 2000
1W
100W
100KW
10W
1KW
GLR
GLPM
Wavelength ( nm )
La
se
r P
ow
er
DLR
DLM
YLS
YLS-QCW
YLR
YLR-QCW
YLM
YLP-HP
YLP
Ytterbium
Fiber Lasers
Diode
Lasers
green
Fiber Lasers
TLR
TLM
ELS
ELR
ELM
ELP
17 Copyright IPG Photonics09 May 2012 17
General Setup of Thulium doped Fiber Lasers
18 Copyright IPG Photonics09 May 2012 18
0 20 40 60 80 100 120 140 160 180 200
0
20
40
60
80
100
120
Tm
Laser
Ou
tpu
t P
ow
er,
W
Yb/Er Lasers' Total Power, W
0 50 100 150 200 250 300 350 400 450 500 550
0
20
40
60
80
100
120
140
T
m L
aser
Ou
tpu
t P
ow
er,
W
PLDs' total power, W
Output Power and Efficiency
Up to 120 W Output Power @ 1.9 µm wavelength
Wall plug efficiency > 10 %
19 Copyright IPG Photonics09 May 2012 19
1998 1999 2000 2001 20020,0
0,2
0,4
0,6
0,8
1,0
Re
lative
Inte
nsity
Wavelength, nm
� Extremely broad spectral range:
1850 – 2050 nm
� Narrow linewidth – less than 1 nm
Spectral Properties
20 Copyright IPG Photonics09 May 2012 20
Beam Profil at 300 mm focal length
Copyright IPG Photonics
Transient Characteristics
Switching On Time 550 µµµµs Switching Off Time 250 µµµµs
Modulation with PRR = 3 kHz
Direct modulation of semiconductor emitter diodes’(PLDs) current
� Fast switching ON/OFF
� Relatively high modulation
frequencies
22 Copyright IPG Photonics
Erbium and Thulium Erbium and Thulium dopeddoped Fiber LasersFiber Lasers
�� Power up to 120 W Power up to 120 W singlesingle mode (Tm mode (Tm dopeddoped @ 1.940 nm)@ 1.940 nm)
�� Power up to 500 W multi mode (Power up to 500 W multi mode (ErEr doped @ 1567 nm)doped @ 1567 nm)
�� Robust concept for industrial usageRobust concept for industrial usage
�� Long Long termterm teststests: : ThousandsThousands of of hourshours withoutwithout power power decreasingdecreasing
�� Fast Fast modulationmodulation byby directdirect switchingswitching of of PLDsPLDs
�� ELSELS--500 Multimode: Top hat 500 Multimode: Top hat beambeam profil profil byby usageusage of of multimulti mode mode
fiberfiber
SummarySummary
23 Copyright IPG Photonics
Thank you for your attention!