High modulation rate, microsecond pulses for micromachining using a planar waveguide CO2 laser amplifier

Q. Cao, H. J. Baker, D. R. Hall

Research output: Contribution to journalArticle

Abstract

A 7-pass, master oscillator and power amplifier CO2 laser system is reported using planar waveguide structures. An acousto-optic modulator between oscillator and amplifier is shown to introduce thermal lens effects that modify the mode-matching Amplification of pulse bursts at 50 kHz in cw gain is presented, and gain saturation and recovery effects are demonstrated to pulses at a modulation rate up to ~550 kHz.

Original languageEnglish
Pages (from-to)266-269
Number of pages4
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume4184
DOIs
Publication statusPublished - 2001
EventXIII International Symposium on Gas Flow and Chemical Lasers - Florence, Italy
Duration: 18 Sep 200022 Sep 2000

Keywords

  • Acousto-optic modulation
  • Carbon dioxide lasers
  • Gain measurement
  • Gas discharges
  • Laser amplifiers
  • Planar waveguides

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