Violet laser technology

8/7/2019 Violet laser technology

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VIOLET LASER TECHNOLOGY

Presented By

DEEPAK BOPPUDY

ROLL NO:CSE200118342

Under the Guidance

Of

Dr. Sukant Tripathy


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DEEPAK BOPPUDY CSE200118342 2

INTRODUCTION TO LASERS

Laser is an acronym for 'Light Amplification of

Stimulated Emission of Radiation'.

A laser is a device that creates and amplifies a

narrow, intense beam of coherent light.

LASERS


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VIOLET-LASER LIGHT

VIOLET LASERS ARE ALSO REFFERED TO

AS BLUE LASERS .

THE WAVE LENTH OF THE BLUE LASERS IS

OF THE RANGE 400-450 nm.

THE CAPACITY OF A SINGLE DISC CAN BE

EXTENDED TO UPTO 18 GB.

THE STORAGE CAPACITY CAN BE

INCREASED BY 225%.


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COMPARISION BETWEEN CD, DVD AND BLUE-RAY DISC


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GALILEOS VIOLET LASER IMAGING

DIRECT MODULATION OF LIGHT

SMALLER SPIN MIRROR SPEEDS IMAGING


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OPTIMISED DIGITAL PLATES

LITHOSTAR ULTRA-V:A DIGITAL PLATE FOR

OPTIMISED VIOLET-LASER IMAGING.

TECHNOLOGY BEHIND THE LITHOSTAR ULTRA-V.


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STEPS BEHIND THE MAKING OF LITHOSTAR ULTRA-

V.

EXPOSURE

DEVELOPMENT

DIFFUSION

WASH OFF


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EXPOSURE

During exposure of a Lithostar Ultra plate, the laser activates the

silver-halide particles in the Exposed areas. The unexposed silver

particles eventually form the image after chemical reaction withthe developer.


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DEVELOPMENT

During development, the exposed/activated silver-halide particles

are developed and fixed securely inside the emulsion layer.

Particles that were not exposed remain very mobile and capableof diffusion.


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DIFFUSION

In the diffusion stage, unexposed silver ions transfer from the

emulsion layer, through the barrier layer, and to the aluminum

base, forming the final printing image.


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WASH OFF

After image transfer/diffusion is complete, the emulsion and

the water-soluble barrier layer are completely removed, leaving

only the final printing image on the aluminum substrate.


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VIOLET LASER DIODES

THE GaN BASED DIODES


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THE GaN CHALLENGE

HISTORY OF VIOLET DIODES


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FIRST VIOLET LASER DIODE DEVELOPED BY SANYO

THE DIODES USED InGaN(Indium-Gallium-nitride).

CRYSTAL AND DEVICE FABRICATION TECHNOLOGY.

FEATURES OF THE DIODE.

LOW-NOISE BEAM.

NEW STABLE BEAM STRUCTURE.

LOW NOISE DURING WORKING.

LOW POWER CONSUMPTION.


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SONY

SANYO

TOSHIBA

SAMSUNG

COMPANIES MAKING THE VIOLET LASER DIODES.


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THANK U!!!

Violet laser technology

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