Title :
Role of the pumping beam´s shape in microchip lasers
Author_Institution :
Dept. of Electrophys., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
We report a technique for the generation of the cylindrical symmetry Laguerre-Gaussian fields in a fiber-coupled diode end-pumped solid-state laser. The key novelty is to produce a doughnut-shaped pump-profile by defocusing a standard fiber-coupled diode. We demonstrate the dependence of the transverse pattern formation on the cavity quality factor (Q-factor) in a large-Fresnel-number microchip laser excited by a doughnut pump profile.
Keywords :
laser cavity resonators; laser modes; microchip lasers; optical fibre couplers; optical pulse shaping; optical pumping; Fresnel-number microchip laser; Q-factor; cavity quality factor; cylindrical symmetry Laguerre-Gaussian fields generation; doughnut-shaped pump-profile; end-pumped solid-state laser; microchip lasers; pumping beam shape; standard fiber-coupled diode defocusing; transverse pattern formation; Diodes; Laser excitation; Laser mode locking; Laser modes; Laser theory; Microchip lasers; Pump lasers; Q factor; Shape; Solid lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313836
