Fast close-loop phase control to output transform-limited femtosecond laser pulses

  • Cheng Qian
  • , Sijia Wang
  • , Chenglin Gu
  • , Limeng Zhang
  • , Bowen Liu*
  • , Dongqing Pang
  • , Minglie Hu
  • , Lu Chai
  • , Qingyue Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A close-loop chirp compensation system which consists of a simplified frequency-resolved optical gating (FROG) device and liquid crystal spatial light modulator (LC-SLM) is demonstrated. Femtosecond laser pusles are measured by using simplified frequency-resolved optical grating. The phase feedback signals derived from the simplified FROG control the LC-SLM to compensate the chirp of pulses. As a result, 74-fs transform-limited pulses are obtained from nonlinear fiber femtosecond laser amplifier.

Original languageEnglish
Pages (from-to)1102003
Number of pages1
JournalZhongguo Jiguang/Chinese Journal of Lasers
Volume39
Issue number11
DOIs
StatePublished - Nov 2012
Externally publishedYes

Keywords

  • Chirp compensation
  • Femtosecond laser
  • Laser optics
  • Liquid crystal spatial light modulator
  • Nonlinear fiber amplifier
  • Simplified frequency-resolved optical gating

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