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 Paboeuf, Gaëlle Lucas-Leclin, Patrick Georges, Bernd Sumpf, Götz Erbert, Cyrille Varona, Pascal Loiseau, Gérard Aka, Bernard Ferrand

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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.
Original languageEnglish
Pages (from-to)189-193
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume92
Issue number2
DOIs
Publication statusPublished - 2008

Keywords

  • blue laser
  • laser emission
  • diode pumping
  • crystals
  • intracavity

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