Diode pumping of Nd:ASL and its frequency doubling for blue emission around 450 nm
D. Paboeufa, G. Lucas-Leclina, P. Georgesa, B. Sumpfb, G. Erbertb, C. Varonac, P. Loiseauc, G. Akac, B. Ferrandd
Published in:
Proc. SPIE, vol. 6871, no. 68711P (2008).
Abstract:
We present the diode pumping of a Nd-doped strontium and lanthanum (Nd:ASL) crystal Sr1-xLax-yNdyMgxAl12-xO19 (0.05 <= x <= 0.5; y = 0.05) for second harmonic generation around 450 nm. In order to fulfill the pumping requirements of this crystal, 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-2sr-1 has been obtained with a linewidth lower than 80 pm at 798 nm. This laser source has been 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.
a Laboratoire Charles Fabry de L'Institut d'Optique, CNRS, Univ Paris-Sud, Campus Polytechnique, RD128, 91127 Palaiseau Cedex, France
b Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
c Laboratoire de Chimie de la Matière Condensée de Paris, CNRS, ENSCP, 11 rue P. et M. Curie, 75231 Paris, France
d Laboratoire de Cristallogenèse Appliquée, CEA - LETI 17 Rue des martyrs, 38054 Grenoble, France
Keywords:
diode pumped solid-state lasers, rare earth, second harmonic generation, neodymium, volume holographic grating
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