12 September 2002 Nanosecond-pulse high-peak-power circle-focusing laser beam for laser processing
Author Affiliations +
Proceedings Volume 4915, Lasers in Material Processing and Manufacturing; (2002); doi: 10.1117/12.482916
Event: Photonics Asia, 2002, Shanghai, China
Abstract
A method and the device for obtaining a high peak output power laser with the ns-regime pulse are presented. A Q-switched laser with a novel configuration and a special Q-switched method for the resonator energy storage are proposed. We put a piece of glass with a small hole and special parameters into the resonator which is composed of two totally reflective mirrors in order to obtain the coupling output and realize the step alternation of Q value from "1" to "0" in the resonator. The photons emit out ofthe resonator after a transmission back and forth so as that the output laser pulses with a few ns lifetime are obtained. Simultaneously, the output laser distributes with a circle-axisymmetic pattern and demonstrates good space-transmission and focusing characteristics.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yangwu Ma, Jianping Li, Di Liang, Xuanhui Lu, "Nanosecond-pulse high-peak-power circle-focusing laser beam for laser processing", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482916; https://doi.org/10.1117/12.482916
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KEYWORDS
Resonators

Crystals

Pulsed laser operation

Mirrors

Electro optics

Q switched lasers

Laser processing

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