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Proceedings Paper

Pulsed CO2 laser oscillator excited by microwaves
Author(s): Toshi Sugiyama; M. Kimura; Shigeki Yamane; T. Yano; R. Sano
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Paper Abstract

The optimum excitation conditions for pulsed CO2 laser oscillation excited by microwaves are investigated to achieve oscillation with a short pulse width at a high repetition rate. The excitation conditions are optimized as follows; (1) by evaluating the decay time of excited N2 molecule population density to optimize the gas mixture, and (2) by evaluating the discharge stability and the laser output waveform to optimize the magnetron drive conditions. We have developed a new coaxial fast gas flow pulsed CO2 laser oscillator excited by microwaves, which produces pulses output with a rise time of less than 5 microsecond(s) ec rise-time and a 1/e- fall time of 30 microsecond(s) ec at a maximum repetition rate of 5 kHz. It is also possible to modulate the output power and the pulse waveform at high speed. The oscillator is currently being tested for application to a laser drilling system for printed wired boards.

Paper Details

Date Published: 22 December 1998
PDF: 5 pages
Proc. SPIE 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (22 December 1998); doi: 10.1117/12.334415
Show Author Affiliations
Toshi Sugiyama, Matsushita Industrial Equipment Co., Ltd. (United States)
M. Kimura, Matsushita Industrial Equipment Co., Ltd. (Japan)
Shigeki Yamane, Matsushita Industrial Equipment Co., Ltd. (Japan)
T. Yano, Matsushita Industrial Equipment Co., Ltd. (Japan)
R. Sano, Matsushita Electrical Industrial Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 3574:
XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Anatoly S. Boreisho; Gennady A. Baranov, Editor(s)

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