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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 3 — Feb. 5, 2007
  • pp: 1155–1160

Efficient doubling of femtosecond pulses in aperiodically and periodically poled KTP crystals

A. A. Lagatsky, C. T. A. Brown, W. Sibbett, S. J. Holmgren, C. Canalias, V. Pasiskevicius, F. Laurell, and E. U. Rafailov  »View Author Affiliations

Optics Express, Vol. 15, Issue 3, pp. 1155-1160 (2007)

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Efficient doubling of femtosecond pulses in periodically and aperiodically poled KTP crystals is demonstrated by employing the quasi-phasematched frequency conversion technique. Conversion efficiencies as high as 60% were achieved using either aperiodically or periodically poled KTP nonlinear crystals in an extracavity, single-pass configuration using a diode-pumped femtosecond Yb:KYW laser as the pump source. The temporal characteristics of the frequency-doubled pulses as a function of focusing conditions in a “thick” nonlinear crystal regime have been investigated experimentally and pulses as short as 177 fs have been generated at around 520 nm under strong focusing conditions using a KTP crystal with aperiodic poling.

© 2007 Optical Society of America

OCIS Codes
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.7300) Lasers and laser optics : Visible lasers
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Nonlinear Optics

Original Manuscript: September 7, 2006
Revised Manuscript: January 2, 2007
Manuscript Accepted: January 2, 2007
Published: February 5, 2007

A. A. Lagatsky, C. T. A. Brown, W. Sibbett, S. J. Holmgren, C. Canalias, V. Pasiskevicius, F. Laurell, and E. U. Rafailov, "Efficient doubling of femtosecond pulses in aperiodically and periodically poled KTP crystals," Opt. Express 15, 1155-1160 (2007)

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