Amplitude modulation effect on a dye laser amplifier

Koshichi Nemoto; Rikio Ishikawa; Yoshibumi Minowa

doi:10.1117/12.154486

1 May 1993 Amplitude modulation effect on a dye laser amplifier

Koshichi Nemoto, Rikio Ishikawa, Yoshibumi Minowa

Proceedings Volume 1870, Laser Coherence Control: Technology and Applications; (1993) https://doi.org/10.1117/12.154486
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Koshichi Nemoto, Rikio Ishikawa, and Yoshibumi Minowa "Amplitude modulation effect on a dye laser amplifier", Proc. SPIE 1870, Laser Coherence Control: Technology and Applications, (1 May 1993); https://doi.org/10.1117/12.154486

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