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

David Pabœuf (1) , Gaëlle Lucas-Leclin (1) , Patrick Georges (1) , Bernd Sumpf (2) , Götz Ebert (2) , Cyrille Varona (3) , Pascal Loiseau (3) , Gérard Aka (3) , Bernard Ferrand (4)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa
2 FBH - Ferdinand-Braun-Institut für Höchtstfrequenztechnik
3 LCMCP (site Paris VI) - Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI)
4 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information

We present the diode pumping of a Nd:ASL (Sr$_{1-x}$La$_{x-y}$Nd$_y$Mg$_x$Al$_{12-x}$O$_{19}$) 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.

Domaines: Optique [physics.optics]; Optique / photonique

David Pabœuf, Gaëlle Lucas-Leclin, Patrick Georges, Bernd Sumpf, Götz Ebert, et al.. 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 - Laser and Optics, 2008, 92 (2), pp.189-193. ⟨10.1007/s00340-008-3079-2⟩. ⟨hal-00522810⟩