Intracavity second-harmonic generation at 320 nm of an actively Q-switched Pr :LiYF4 laser

Junichiro Kojou, Yoichiro Watanabe, Yosuke Kojima, Hiroyuki Nemoto, Fumihiko Kannari

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We demonstrate pulse laser operation of a Pr : LiYF4 laser pumped by InGaN laser diodes (444 nm) using an acousto-optic modulator.We obtained a maximum laser peak power of 167W(4 μJ/pulse) with a pulse width of 24 ns at an 11 kHz repetition rate for a 63 nm wavelength. Employing an 8 mm long lithium triborate nonlinear crystal in the laser cavity, we obtained a maximumpeak power of 55W(2.7 μJ/pulse) at 320 nm, which corresponds to a conversion efficiency of 69% with respect to the fundamental laser energy. The UV laser pulse width was 36 ns.

Original languageEnglish
Pages (from-to)1382-1386
Number of pages5
JournalApplied Optics
Volume51
Issue number9
DOIs
Publication statusPublished - 2012 Mar 20

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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