Development of a Front-End System for Chirped Pulse Amplification High-Power Nd:Glass Laser.
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概要
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We have developed a front-end system to generate a chirped pulse at a wavelength of 1053 nm for a 100 TW glass laser system. The front-end system consists of a passively mode-locked diode-pumped Nd: glass laser, a pulse stretcher and a Ti: Al<SUB>2</SUB>O<SUB>3</SUB> regenerative amplifier. The passive mode-locked diode-pumped Nd: fluorophoshate glass laser produced pulses as short as 150 fs at an average power of 100 mW at 1053 nm-1061 nm at a repetition frequency of 99.98 MHz. The TEM<SUB>00</SUB> Ti: Al<SUB>2</SUB>O<SUB>3</SUB> regenerative amplifier exhibited a net gain of over 10<SUP>6</SUP> at 1053 nm. At long time operation, the output pulse energy is typically 4 mJ, with a power fluctuation of less than ±5% with temperature and humidity control in cavity. No significant gain narrowing was observed in the cavity, resulting in a 1.6 ns chirped pulse that was synchronized with the RF signal of GEKKO XII laser system within a few ps by controlling the oscillator cavity length with a PZT actuator.
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社団法人 レーザー学会 | 論文
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