Title :
200 mW at 488 nm From a ppMgO:LN Ridge Waveguide by Frequency Doubling of a Laser Diode Module
Author :
Jedrzejczyk, Daniel ; Güther, Reiner ; Paschke, Katrin ; Eppich, Bernd ; Erber, Götz
Author_Institution :
Ferdinand-Braun-Inst., Leibniz-Inst. fur Hochstfrequenztechnik, Berlin, Germany
Abstract :
We report on second-harmonic generation in a single-pass bench top configuration using a MgO-doped periodically poled LiNbO3 ridge waveguide (RW) and a hybrid integrated master oscillator power amplifier laser module at 976 nm. A coupling efficiency into the crystal RW of 66% was realized and 200 mW of continuous-wave radiation at 488 nm at room temperature were reached. A conversion efficiency of 43% with regard to the coupled near-infrared radiation was obtained. The experimental results agreed well with simulations including material inhomogeneities, higher optical absorption, and thermal effects.
Keywords :
lithium compounds; magnesium compounds; optical harmonic generation; optical waveguides; ridge waveguides; semiconductor lasers; LiNbO3:MgO; conversion efficiency; coupling efficiency; frequency doubling; hybrid integrated master oscillator power amplifier laser; laser diode module; near-infrared radiation; optical absorption; power 200 mW; ridge waveguide; second-harmonic generation; temperature 293 K to 298 K; thermal effects; wavelength 488 nm; wavelength 976 nm; Frequency conversion; nonlinear optics; optical waveguides; second-harmonic generation (SHG); semiconductor laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2053921