New design of four-pass dye laser amplifier and suppression of amplified spontaneous emission

Jae Won Hahn, Yong Shim Yoo, Eun Seong Lee

Research output: Contribution to journalConference article


We have demonstrated a new design of a four-pass dye laser amplifier that can suppress parasitic oscillation in a multi-pass amplifier. Amplified spontaneous emission (ASE) in the output beam of the amplifier is reduced with a diffraction grating. A high-peak power pulsed dye laser beam is obtained by amplifying a continuous-wave narrow-bandwidth dye laser with power gain greater than 2×106. The eventual bandwidth of the pulses is measured to be approximately 130 MHz. The obtained ASE ratio of the four-pass amplifier system is <1.5%. Also, we have obtained a high-resolution coherent anti-Stoke Raman spectrum of oxygen in air using the laser system.

Original languageEnglish
Pages (from-to)1089-1092
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1998 Dec 1
EventProceedings of the 1998 International Conference on Applications of Photonic Technology, ICAPT - Ottawa, Can
Duration: 1998 Jul 291998 Jul 31


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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