Blue generation of flash-lamp pumped Pr:YAP laser by intracavity frequency doubling

✍ Scribed by H. Jelínková; M. Fibrich; M. Čech; K. Nejezchleb; V. Škoda

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 137 KB
• Volume: 7
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200910110

✦ Synopsis

In this contribution we report on blue generation of Pr:YAP laser under flash-lamp pumping at room temperature. Stimulated emission at 373.5 nm has been reached by intracavity frequency doubling of the red-emitting Pr:YAP laser operating in Q-switched pulsed regime at a fundamental wavelength of 747 nm. For Q-switching, electro-optical modulator based on LiNbO 3 Pockels cell in quarter-wave configuration was used. Employing BBO crystal as a nonlinear medium for second harmonic generation, blue radiation with a pulse energy and length of 380 μJ and 38 ns, respectively, were generated. The red-toblue conversion efficiency was determined to be more than 31%. Pr:YAP SHG pulse Δt = 38 ns (FWHM) E = 380 μJ λ = 373.5 nm 100 ns/div Temporal structure of radiation generated (Ch2), Pockels cell trigger pulse (Ch1); inset: output-laser-beam spot picture