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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 16 — Aug. 12, 2002
  • pp: 824–831

Efficient, high repetition-rate femtosecond blue source using a compact Cr:LiSAF laser

B. Agate, A. J. Kemp, C. T. A. Brown, and W. Sibbett  »View Author Affiliations

Optics Express, Vol. 10, Issue 16, pp. 824-831 (2002)

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We present a practical route to designing a portable femtosecond blue light source that is rugged, compact and battery-powered. An optical-optical second-harmonic generation (SHG) efficiency of 30% is reported using a diode-pumped, femtosecond Cr:LiSAF laser requiring only ~1.2W of electrical drive. 12mW of blue average power is generated using a 3mm KNbO3 crystal in a simple, single-pass extracavity geometry. The corresponding electrical-blue efficiency of 1% is, to our knowledge, the highest reported efficiency of any femtosecond blue source. Despite conditions of large group velocity mismatch, we show that the temporally-broadened blue pulses remain well within the femtosecond regime, at ~540fs.

© 2002 Optical Society of America

OCIS Codes
(140.4050) Lasers and laser optics : Mode-locked lasers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Research Papers

Original Manuscript: June 28, 2002
Revised Manuscript: August 1, 2002
Published: August 12, 2002

Ben Agate, A. Kemp, C. Brown, and W. Sibbett, "Efficient, high repetition-rate femtosecond blue source using a compact Cr:LiSAF laser," Opt. Express 10, 824-831 (2002)

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