Single-mode output power enhancement of an extended cavity broad-area laser diode by an intracavity photorefractive crystal

Vincent Reboud (1) , Nicolas Dubreuil (1) , Pierre Fournet (1) , Gilles Pauliat (1) , Gérald Roosen (1) , Daniel Rytz (2)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Manolia
2 FEE

Brightness improvement of high-power semiconductor lasers can be achieved by placing a broad-area laser diode, used as a pure optical amplifier, in an extended cavity. We report the modal behavior of an extended cavity which contains a photorefractive crystal. The dynamic holographic medium that plays the role of a spatial and spectral filter acts on the transverse and axial structure of the extended cavity modes and improves the single-mode operating range of the laser. An enhancement of the brightness in single-mode operation by a factor of seven has been experimentally observed thanks to the intracavity photorefractive crystal.

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Vincent Reboud, Nicolas Dubreuil, Pierre Fournet, Gilles Pauliat, Gérald Roosen, et al.. Single-mode output power enhancement of an extended cavity broad-area laser diode by an intracavity photorefractive crystal. Applied Physics B - Laser and Optics, 2007, 87, pp.233-237. ⟨10.1007/s00340-007-2603-0⟩. ⟨hal-01575759⟩