Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Design of a Femtosecond Ti:sapphire Laser for Generation and Temporal Optimization of 0.5-PW Laser Pulses at a 0.1-Hz Repetition Rate

  • Sung, Jae-Hee (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST) ;
  • Yu, Tae-Jun (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST) ;
  • Lee, Seong-Ku (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST) ;
  • Jeong, Tae-Moon (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST) ;
  • Choi, Il-Woo (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST) ;
  • Ko, Do-Kyeong (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST) ;
  • Lee, Jong-Min (Center for Femto-Atto Science and Technology & Advanced Photonics Research Institute (APRI), GIST)
  • Received : 2009.01.05
  • Accepted : 2009.02.06
  • Published : 2009.03.25
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Abstract

A chirped-pulse amplification Ti:sapphire laser system has been designed using a 10-Hz 100-TW Ti:sapphire laser to generate 0.1-Hz 0.5-PW laser pulses and optimize their temporal qualities such as temporal contrast and pulse duration. A high-energy booster amplifier to be added is expected to produce an energy above 30 J through the parasitic lasing suppression and the efficient amplification. To improve the temporal contrast of the laser pulses, a high-contrast 1-kHz amplifier system is used as a front-end. A grating stretcher which makes the laser pulse have 1-ns duration is used to prevent optical damages due to high pulse energy during amplification. A grating compressor has been designed with group delay analysis to obtain the recompressed pulse duration close to the transform-limited pulse duration. The final laser pulses are expected to have energy above 20 J and duration below 40 fs.

Keywords

References

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