Highly efficient blue-light generation from a compact, diode-pumped femtosecond laser by use of a periodically poled KTP waveguide crystal

B Agate, E U Rafailov, W Sibbett, S M Saltiel, P Battle, T Fry, E Noonan

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

We present a simplified, potentially portable, and highly efficient blue-light source from a periodically poled KTP waveguide crystal with a compact femtosecond Cr:LiSAF laser. This light source generates 5.6 mW of blue average output power at 424 nm with 27 mW of incident fundamental in a single-pass extracavity arrangement at room temperature. The overall system efficiency of electrical power to blue light is 0.5%, and the internal second-harmonic generation conversion efficiency is as high as 37%. The slope efficiency of 5.5% pJ(-1) at low pulse energies is, to our know-ledge, the highest slope efficiency yet reported for frequency conversion into the blue spectral region. (C) 2003 Optical Society of America.

Original languageEnglish
Pages (from-to)1963-1965
Number of pages3
JournalOptics Letters
Volume28
Issue number20
DOIs
Publication statusPublished - 15 Oct 2003

Keywords

  • CR-LISAF LASERS
  • 2ND-HARMONIC GENERATION
  • CR3+LISRALF6 LASER
  • ABSORPTION
  • BULK

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