Title :
Improving beam quality in broad area semiconductor amplifiers
Author :
Herrero, R. ; Kumar, Sudhakar ; Radziunas, Mindaugas ; Botey, M. ; Staliunas, K.
Author_Institution :
Dept. de Fis. i Eng. Nucl., Univ. Politec. de Catalunya, Terrassa, Spain
Abstract :
The spatial modulation of pump in broad emission area semiconductor amplifiers has two important advantages in this kind of devices. A 2-dimensional periodic modulation of the pump profile introduces by one side, a filtering effect and an improvement of the beam quality. Moreover, the spatial modulation changes the effective diffraction inside the material and reduces the modulation instability generated by the self-focusing effects and the material nonlinearity.
Keywords :
laser beams; laser stability; light diffraction; optical modulation; optical pumping; optical self-focusing; semiconductor optical amplifiers; 2-dimensional periodic modulation; beam quality; broad area semiconductor amplifiers; filtering effect; material nonlinearity; modulation instability; pump profile; self-focusing effects; spatial modulation; Filtering; Laser beams; Laser excitation; Mathematical model; Modulation; Q-factor; Semiconductor device modeling; broad emission area semiconductor laser; gain-loss modulation; photonic crystals;
Conference_Titel :
Transparent Optical Networks (ICTON), 2014 16th International Conference on
Conference_Location :
Graz
DOI :
10.1109/ICTON.2014.6876275
