Feedback Control for Accurate Shaping of Ultrashort Optical Pulses prior to Chirped Pulse Amplification
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概要
- 論文の詳細を見る
Through experiments, we demonstrate accurate pulse shaping of femtosecond optical pulses in both amplitude and phase, prior to chirped pulse amplification. The nonlinear transfer function of the amplifier was compensated with feedback control referring to the amplified pulse shape measured by frequency resolved optical gating (FROG) or temporal analysis, by dispersing a pair of light $e$ fields (TADPOLE). In FROG-referring control, the pulse shaper is adaptively controlled using a control index calculated from the two-dimensional FROG trace image, while in TADPOLE-referring control, the shaping phase-mask is corrected only a few times using the reconstructed spectrum phase of the output pulse. The performance and limitations of pre-shaping systems are discussed by comparing two pulse shaper devices, namely a liquid-crystal spatial light modulator and an acoustic optical phase dispersion filter, two pulse measurement techniques, and two feedback control schemes.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-04-15
著者
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OKAMOTO Tatuyoshi
Department of Electronics and Electrical Engineering, Faculty of Science and Technologies, Keio Univ
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Yamanaka Mio
Department Of Electronics And Electrical Engineering Faculty Of Science And Technologies Keio Univer
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Tanabe Takasumi
Department Of Electronics And Electrical Engineering Faculty Of Science And Technologies Keio Univer
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Ohno Kimihisa
Department Of Electronics And Electrical Engineering Faculty Of Science And Technologies Keio Univer
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Kannari Fumihiko
Department Of Electrical Engineering Faculty Of Science And Technology Keio University
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Okamoto Tatuyoshi
Department of Electronics and Electrical Engineering, Faculty of Science and Technologies, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Yamanaka Mio
Department of Electronics and Electrical Engineering, Faculty of Science and Technologies, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Ohno Kimihisa
Department of Electronics and Electrical Engineering, Faculty of Science and Technologies, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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