@article{oai:repo.qst.go.jp:00048022,
 author = {Miyasaka, Yasuhiro and Kiriyama, Hiromitsu and Kishimoto, Maki and Mori, Michiaki and Kando, Masaki and Kondo, Kiminori and 宮坂 泰弘 and 桐山 博光 and 岸本 牧 and 森 道昭 and 神門 正城 and 近藤 公伯},
 issue = {2},
 journal = {レーザー研究},
 month = {Feb},
 note = {In this paper, we report the development of optically synchronized seed pulses to achieve low-jitter pump pulses for optical parametric chirped-pulse amplification in a petawatt-class laser system. The 1064 nm pulses are generated from Ti:sapphire oscillator pulses by soliton self-frequency shift in a photonic crystal fiber (PCF). The center wavelength of the PCF output spectrum is kept at 1064 nm using a newly proposed feedback control system. This is performed by rotating a half wave plate automatically by an amount that depends on the extent of center wavelength shift. The center wavelength is stable, with a fluctuation of less than 0.02% (root mean square). The stabilized pulses are amplified to 150 mW at 80 MHz by four Yb:fiber amplifiers and stretched to 1.2 ns by a fiber Bragg grating. As a preliminary result, the stretched pulses are amplified in a diode-pumped Nd:YAG regenerative amplifier to 135 mJ at 1 Hz.},
 pages = {108--111},
 title = {Development of Stable Seed Pulses for Optically Synchronized Optical Parametric Chirped-Pulse Amplifier Pumping},
 volume = {45},
 year = {2017}
}