Title :
Cryogenically cooled Er:YAG laser
Author :
Dubinskii, M. ; Gabrielyan, N. Ter ; Newburgh, G.A. ; Merkle, L.D.
Author_Institution :
US Army Res. Lab., Adelphi
Abstract :
We demonstrated highly efficient ultra-low-photon-defect resonantly diode-pumped Er-doped cryo-cooled laser. Slope efficiency of 71.5% per cavity absorbed power was achieved at 78 degK in these initial experiments. It was shown that cryo-laser resonantly pumped by "full-width" laser diodes can be temperature tuned to achieve better optimized overall performance. Maximum quasi-CW power of over 63W is reported. Overall Er:YAG cryo-laser performance can be significantly improved by implementing the pump diode spectral narrowing, and advanced beam shaping of the existing diode bar stacks.
Keywords :
cryogenics; erbium; laser beams; laser cavity resonators; laser tuning; solid lasers; YAG:Er; beam shaping; cryogenically cooled laser; diode bar stacks; laser diodes; pump diode spectral narrowing; quasiCW power; ultra-low-photon-defect; Absorption; Diodes; Indium phosphide; Laser excitation; Laser modes; Laser transitions; Power lasers; Pump lasers; Resonance; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4385901
