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Blue laser emission by intracavity second harmonic generation in Nd:ASL pumped by a tapered amplifier laser diode stabilized by a volume Bragg grating

Paboeuf, David and Lucas-Leclin, Gaëlle and Georges, Patrick and Sumpf, Bernd and Erbert, Götz and Varona, Cyrille and Loiseau, Pascal and Aka, Gérard and Ferrand, Bernard (2008) Blue laser emission by intracavity second harmonic generation in Nd:ASL pumped by a tapered amplifier laser diode stabilized by a volume Bragg grating. Applied Physics B: Lasers and Optics, 92 (2). pp. 189-193. ISSN 0946-2171

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Abstract

We present the diode pumping of a Nd:ASL (Sr1-xLax-yNdyMgxAl12-xO19) crystal for second harmonic generation at 453 nm. We have developed a high-brightness pump source based on a tapered amplifier in an extended cavity with a volume Bragg grating for wavelength stabilization. A pump brightness of 110 MW cm-2 sr-1 is obtained with a linewidth lower than 80 pm at 798 nm. This laser source is used to pump a Nd:ASL crystal to obtain 300 mW at 906 nm and 53 mW at 453 nm by intracavity doubling with a LBO crystal.