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Solid-State Lasers

Photonics.com
Jul 2013
Coherent Inc.Request Info
 
SANTA CLARA, Calif., July 29, 2013 — The Helios series of subnanosecond solid-state lasers from Coherent Inc. is suited for applications including scribing of thin-film and crystalline-silicon solar cells, dicing of silicon wafers, and precision marking for use in the electronics and photovoltaics industries.

The Q-switched lasers are based on a master-oscillator power-amplifier (MOPA) architecture, and feature a pulse repetition frequency of 50 kHz and a pulse width of <600 ps. The oscillator delivers a TEM00 circular beam with M2 <1.2, and the integrated amplifier stage allows modular power scaling. The 1064-nm-wavelength lasers are available in several output powers, with total power up to 5 W. At a pulse repetition rate of 50 kHz, this translates into a pulse energy of 100 µJ.


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GLOSSARY
electronics
That branch of science involved in the study and utilization of the motion, emissions and behaviors of currents of electrical energy flowing through gases, vacuums, semiconductors and conductors, not to be confused with electrics, which deals primarily with the conduction of large currents of electricity through metals.
scribing
The process of perforating a silicon or ceramic substrate with a series of tiny holes along which it will break. Nd:YAG or CO2 lasers are now routinely used.
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