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Proceedings Paper

Amplitude modulation effect on a dye laser amplifier
Author(s): Koshichi Nemoto; Rikio Ishikawa; Yoshibumi Minowa
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Paper Abstract

For some kinds of industrial applications like laser photochemistry, high pulse power and fine tunability is required for a laser system. A cw oscillator and pulse dye amplifiers system is one method to generate high power laser pulses with narrow spectral bandwidth enough for laser photochemistry. In this paper, we report that the spectral sidebands occur in the process of amplification pumped by CVLs of which the intensity fluctuated. The spectral profile fluctuations and mode beats are deduced to cause these fluctuations. According to the rate equation analysis, the DL waveform is modulated by the CVLs, and the frequency sidebands are generated, and its frequency bandwidth is several GHz. Since the spectral bandwidth of the DL is usually a few 100 MHz, the bandwidth and the level of amplitude modulation of the pumping laser are very important. This modulation may be reduced by multi pumping beam irradiation or other methods.

Paper Details

Date Published: 1 May 1993
PDF: 8 pages
Proc. SPIE 1870, Laser Coherence Control: Technology and Applications, (1 May 1993); doi: 10.1117/12.154486
Show Author Affiliations
Koshichi Nemoto, Central Research Institute of Electric Power Industry (Japan)
Rikio Ishikawa, Central Research Institute of Electric Power Industry (Japan)
Yoshibumi Minowa, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 1870:
Laser Coherence Control: Technology and Applications
Howard T. Powell; Terrance J. Kessler, Editor(s)

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