, Volume 91, Issue 3-4, pp 493-498

Wavelength stabilization of extended-cavity tapered lasers with volume Bragg gratings

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Abstract

The wavelength stabilization of high-brightness extended-cavity lasers at 810-nm by the use of volume Bragg gratings is described. Narrow linewidth (< 20 pm), high power (2.5 W) and good beam quality (M2<4) operation has been obtained in a robust and simple design. The impact of the beam focusing into the Bragg grating on the external cavity performance has been theoretically and experimentally investigated. Finally, second-harmonic generation of the infrared beam has been obtained in a ppKTP crystal, demonstrating a non-linear conversion efficiency of 0.8%/W and up to 8 mW at 405 nm.

PACS

42.40.Pa; 42.55.Px; 42.60.By; 42.65.Ky