A 12.4 W Ti:sapphire Based Regenerative Amplifier System with 200 fs Pulse Width at 50 kHz Repetition Rate

Tomohiro IMAHOKO; Norihiro INOUE; Kazuya TAKASAGO; Masanao KAMATA; Tetsumi SUMIYOSHI; Hitoshi SEKITA; Minoru OBARA

doi:10.2184/lsj.36.1066

Lasers and Laser Systems

A 12.4 W Ti:sapphire Based Regenerative Amplifier System with 200 fs Pulse Width at 50 kHz Repetition Rate

Tomohiro IMAHOKO, Norihiro INOUE, Kazuya TAKASAGO, Masanao KAMATA, Tetsumi SUMIYOSHI, Hitoshi SEKITA, Minoru OBARA

著者情報

キーワード: Femtosecond, Amplifier, Ti:sapphire, Glass, Scribing

ジャーナルフリー

2008 年 36 巻 APLS 号 p. 1066-1068

DOI https://doi.org/10.2184/lsj.36.1066

詳細

抄録

We have developed a cryogenically cooled Ti:sapphire regenerative amplifier at the repetition rate of up to 100 kHz which was pumped by the intracavity SHG pulses of Yb:YAG thin disk laser. An electro-optic (EO) switching device employing a β-barium borate (β-BBO) crystal was used for pulse extraction from the amplifier resonator. The maximum average amplified power obtained was 21 W under the two pumping pump powers of 70 W at 50 kHz and 75 W at 100 kHz. The amplified pulse was able to be compressed to 200 fs by a grating pair compressor, and the output power was 12.4 W at 50 kHz. The cryogenic cooling system made Ti:sapphire crystal capable to be pumped with over 70 W SHG power in order to keep the stable condition of the regenerative amplifier resonator.

責任著者(Corresponding author)

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