A Passively $Q$-Switched, CW-Pumped Fe:ZnSe Laser
| Autor: | Jonathan W. Evans, Kenneth L. Schepler, Patrick A. Berry |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Pulse repetition frequency
Materials science business.industry Slope efficiency Condensed Matter Physics Laser Q-switching Atomic and Molecular Physics and Optics Semiconductor laser theory law.invention Optical pumping chemistry.chemical_compound Optics chemistry law Optoelectronics Zinc selenide Laser beam quality Electrical and Electronic Engineering business |
| Zdroj: | IEEE Journal of Quantum Electronics. 50:204-209 |
| ISSN: | 1558-1713 0018-9197 |
| DOI: | 10.1109/jqe.2014.2302233 |
| Popis: | We report the demonstration of high-average-power passively Q-switched laser oscillation from Fe2+ ions in zinc selenide. A semiconductor saturable absorber mirror was used as a passive Q-switch element. Using a 60% R outcoupler, the pump-limited output power was 515 mW. The spectral center of the laser was 4045 nm. The pulse repetition frequency (PRF) at maximum power was ~ 850 kHz with a corresponding minimum pulsewidth of 64 ns Full-Width Half-Maximum. The pulse energy and peak power were and 8.3 W, respectively. The average output power was limited only by available pump power and increased with a slope efficiency of 22%. No thermal rolloff of slope-efficiency was observed. The beam quality was measured to be M2 ≤ 2.6. The temporal stability of the pulsed output was characterized. Thermal effects were shown to play a significant role in determining the PRF of the output. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|