Title :
Focusing properties of semiconductor lasers with broad-area and shaped unstable resonator
Author :
Tanguy, Y. ; Voignier, V. ; O´Neill, E. ; McInerney, J.G. ; Huyet, G. ; Corbett, B.
Author_Institution :
Phys. Dept., Nat. Univ. of Ireland, Cork, Ireland
fDate :
5/1/2003 12:00:00 AM
Abstract :
Negative branch unstable resonators, with different magnifications, have been fabricated and analyzed. Investigating the focusing properties of our designs, we show that variations in the astigmatism of the beam are dependent on the magnification of the resonator and thermal effects. Given this, we have produced devices with stable astigmatism and good focus points. Numerical simulations were also carried out showing good agreement with experimental results.
Keywords :
aberrations; laser beams; laser cavity resonators; laser stability; optical focusing; semiconductor lasers; beam astigmatism variations; focus points; focusing properties; large-aperture high-power semiconductor lasers; negative branch unstable resonators; numerical simulations; resonator magnification; semiconductor lasers; stable astigmatism; thermal effects; Erbium-doped fiber lasers; Etching; Focusing; Laser excitation; Numerical simulation; Optical imaging; Optical resonators; Pump lasers; Semiconductor lasers; Vision defects;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.809926
