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

Research output: Contribution to journalArticlepeer-review

DOI

Author(s)

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

School/Research organisations

Abstract

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. (c) 2007 Optical Society of America.

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Original languageEnglish
Pages (from-to)1155-1160
Number of pages6
JournalOptics Express
Volume15
Issue number3
DOIs
Publication statusPublished - 5 Feb 2007

    Research areas

  • 2ND HARMONIC-GENERATION, FLUX-GROWN KTIOPO4, 2ND-HARMONIC GENERATION, BLUE, INDEX, FIELD

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