Development of a Terawatt Class Sub-10 fs Laser System

• AMANI EILANLOU Abdolreza

  RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198 Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 JST, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012

• NABEKAWA Yasuo

  RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198

• L. ISHIKAWA Kenichi

  Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 JST, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012

• TAKAHASHI Hiroyuki

  Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656

• MIDORIKAWA Katsumi

  RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198

抄録

We have developed an amplifier chain of Ti:Sapphire laser with a spectral width of more than 200 nm, which potentially generates a terawatt sub-10 fs pulse. This laser system consists of a Ti:Sapphire oscillator followed by a pulse stretcher, dispersion compensator with an SLM and the amplifier chain. The first amplifier is a regenerative one pumped by a green laser with energy of 11.5 mJ at 1 kHz. We could successfully compensate for the gain narrowing during regenerative amplification by using high-damage-threshold chirped mirrors and specially designed partial mirrors in the cavity, resulting in pulse energy of 73 µJ. The output pulse is sent to a beam-slicer to reduce the repetition rate to 10 Hz. After 5-pass amplification in a multi-pass amplifier pumped by the second harmonic of a YAG laser with an energy of 180 mJ, we obtained an amplified pulse energy of 30 mJ.

収録刊行物

• レーザー研究

  レーザー研究 36 (APLS), 1102-1104, 2008

  一般社団法人 レーザー学会

キーワード

• High-intensity ultrafast lasers
• Ti:Sapphire lasers
• Sub-10 fs
• Terawatt

詳細情報

• CRID: 1390282679624425984
• NII論文ID: 130004465974
• DOI: 10.2184/lsj.36.1102
• ISSN: 13496603
• ISSN: 03870200
• Web Site: http://www.jstage.jst.go.jp/article/lsj/36/APLS/36_APLS_1102/_pdf
• 本文言語コード: en
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