Triple-Pass Ti:sapphire Pre-Amplifier with 60dB Gain for Laser Systems Using Chirped-Pulse Amplification

Helmut SCHILLINGER; Shuji SAKABE; Tomoyuki KUGE; Hiroki UEYAMA; Tohru URANO; Sakae KAWATO; Masaki HASHIDA; Keisuke SHIMIZU; Junkei KOU; Yasukazu IZAWA

doi:10.2184/lsj.25.890

Helmut SCHILLINGER, Shuji SAKABE, Tomoyuki KUGE, Hiroki UEYAMA, Tohru URANO, Sakae KAWATO, Masaki HASHIDA, Keisuke SHIMIZU, Junkei KOU, Yasukazu IZAWA

Author information

Helmut SCHILLINGER
Institute for Laser Technology
Shuji SAKABE
Department of Energy Engineering, Osaka University
Institute of Laser Engineering, Osaka University
Tomoyuki KUGE
Department of Energy Engineering, Osaka University
Hiroki UEYAMA
Department of Energy Engineering, Osaka University
Tohru URANO
Department of Energy Engineering, Osaka University
Sakae KAWATO
Institute of Laser Engineering, Osaka University
Masaki HASHIDA
Institute for Laser Technology
Keisuke SHIMIZU
Department of Energy Engineering, Osaka University
Junkei KOU
Gradate School of Science, Osaka University
Yasukazu IZAWA
Institute of Laser Engineering, Osaka University

Keywords: Ti:sapphire amplifier, Chirped-pulse amplification

JOURNAL FREE ACCESS

1997 Volume 25 Issue 12 Pages 890-893

DOI https://doi.org/10.2184/lsj.25.890

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Abstract

By pumping a brewster-cut Ti:sapphire crystal from both sides with a frequency-doubled Nd:YAG laser at 6J/cm² we achieved a single pass gain of 20dB. This allows to amplify pulses from the nano-Joule to the milli-Joule level with a triple-pass amplifier with > 60dB gain. An output energy up to 3.5mJ was measured, depending on the input energy from the oscillator/stretcher front end. The triple-pass amplifier was used in a chirped-pulse amplification terawatt system. We discuss the advantages of this approach, e.g. for the amplification of very short pulses and for the level of amplified spontaneous emission.

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