Applied Physics B

, Volume 80, Issue 7, pp 861–864 | Cite as

Second-harmonic generation of 405-nm light using periodically poled KTiOPO4 pumped by external-cavity laser diode with double grating feedback

  • E. Samsøe
  • P. M. Petersen
  • S. Andersson-Engels
  • P. E. Andersen
Article

Abstract

A frequency-doubled laser diode system for generation of blue–UV light is described. The system is based on an external-cavity high-power laser diode with double feedback from the zeroth and the first orders of a diffraction grating. Light at 405 nm is generated in a single-pass configuration using periodically poled KTiOPO4. We show that the double grating feedback improves the second harmonic conversion efficiency by several orders of magnitude as compared to the freely running laser. The conversion efficiency may be improved further such that higher second-harmonic powers may be generated.

PACS

42.55.Px 42.60.Jf 42.65.Ky 

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • E. Samsøe
    • 1
    • 2
  • P. M. Petersen
    • 1
  • S. Andersson-Engels
    • 2
  • P. E. Andersen
    • 1
  1. 1.Department of Optics and Plasma ResearchRisø National LaboratoryRoskildeDenmark
  2. 2.Department of PhysicsLund Institute of TechnologyLundSweden

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