Pulse Shortening by a Kerr Cell in an Iodine Laser and the Amplification of a Shortened Pulse

Kerr cell을 이용한 옥소 레이저의 펄스폭 단축과 압축된 펄스의 증폭

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  • M.R.Motchalov (Russian Federal Nuclear Center)
  • 조성호 (한국과학기술원 물리학과) ;
  • 조민식 (한국과학기술원 물리학과) ;
  • 최병일 (한국과학기술원 물리학과) ;
  • 남창희 (한국과학기술원 물리학과) ;
  • Published : 1995.03.01

Abstract

A Kerr cell was utilized as an optical shutter to generate a shortened pulse and as an isolator between amplifiers in an iodine laser system. By rotating the polarization of incident laser pulse only during the timing window of high voltage applied to the Kerr cell, shortened pulses of 5 ns and 1 ns, corresponding to the difference in propagation time of two coaxial cables, were obtained. It was also noticed that more than one timing window of Kerr cell was produced with a long incident laser pulse from the oscillator. The measured transmittance of Kerr cell with respect to applied voltage was compared with the theoretical estimation using the electro-optic Kerr effect theory. Through the amplification of the shortened pulse in iodine amplifiers. a pulse of 0.5 GW(2 J in 4 ns) was obtained. ained.

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