Tunable Yb:KGW laser, CW or Q-switched, enabled by dual-axis tilt of a MOEMS mirror: KGW laser, CW or Q-switched, enabled by dual-axis tilt of a MOEMS mirror

Alan Paterson, Ralf Bauer, Walter Lubeigt, Deepak Uttamchandani

Research output: Contribution to journalSpecial issue

3 Citations (Scopus)
35 Downloads (Pure)

Abstract

The experimental proof-of-concept demonstration of an end-pumped Yb:KGW laser with tunable spectral and temporal output characteristics is reported. For the first time, tuning of both of these characteristics in a solid-state laser is achieved simultaneously using a single electrothermally-actuated MOEMS micromirror with controllable tilt angle in two dimensions. In continuous-wave mode, a wavelength tuning range of 22 nm with < 0.3 nm linewidth was achieved by using static MOEMS mirror tilt about one axis to select the intracavity wavelength dispersed by a prism. A wavelength tuning range of 15.3 nm with < 1.1 nm linewidth was achieved in Q-switched operation, by using simultaneous static tilt and resonant scanning of the MOEMS mirror about orthogonal axes. In this operational mode, a pulse repetition rate of 2.06 kHz was obtained with pulse durations varying from 460 ns to 740 ns over the addressable range of laser wavelengths.
Original languageEnglish
Article number1601709
Number of pages9
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume24
Issue number5
Early online date9 Mar 2018
DOIs
Publication statusPublished - 31 Oct 2018

Keywords

  • digital laser control
  • tunable laser
  • end-pumped Yb:KGW laser
  • wavelength tuning
  • active Q-switch
  • MOEMS
  • micromirror

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