31 March 1997 Yb:S-FAP laser performance
Author Affiliations +
Proceedings Volume 2986, Solid State Lasers VI; (1997); doi: 10.1117/12.270004
Event: Photonics West '97, 1997, San Jose, CA, United States
Abstract
We have demonstrated the highest long-pulse efficiency and highest Q-switched energy reported to date for a Yb:S-FAP laser. THe Yb:S-FAP laser was pumped with a flashlamp pumped, free-running Cr:LiSAF laser. Threshold pump energy was extremely low, typically 30 mJ. Maximum output energy was 370 mJ at 1.047 micrometers with 650 mJ of pump incident on the Yb:S-FAP crystal. We obtained total optical-to-optical conversion efficiency of up to 57 percent in the long pulse mode. This is the highest conversion efficiency ever reported for this material in high energy, pulsed mode. Three samples of Yb:S-FAP of differing dimensions, doping, and crystal quality were tested. Two of the Yb:S-FAP crystals showing crystal defects experienced bulk damage during Q-switched mode of operation. The remaining crystal had the lowest dopant concentration of all the crystals, limiting the stored energy. Up to 65 mJ of output was obtained in this high-quality crystal, the highest ever reported in Q-switched mode with this laser material. Conversion efficiency at this energy level was 11.8 percent. However, the maximum efficiency obtained was 16.3 percent before pump bleaching effects started to occur due to low dopant concentration in this crystal sample.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jeffrey W. Pierce, Roy D. Mead, "Yb:S-FAP laser performance", Proc. SPIE 2986, Solid State Lasers VI, (31 March 1997); doi: 10.1117/12.270004; https://doi.org/10.1117/12.270004
PROCEEDINGS
10 PAGES


SHARE
KEYWORDS
Crystals

Q switching

Q switched lasers

Energy efficiency

Ytterbium

Absorption

Laser crystals

RELATED CONTENT

Multi watt passively Q switched Yb YAB Cr YAG microchip...
Proceedings of SPIE (February 17 2017)
Highly-efficient multi-watt Yb:CaLnAlO4 microchip lasers
Proceedings of SPIE (February 17 2017)
Short pulse and high repetition rate Q switched Yb YAG...
Proceedings of SPIE (April 27 2005)
LD-pumped high-efficiency Nd:YAG ceramic laser
Proceedings of SPIE (January 26 2005)
Fe ZnSe passive Q switching of 2.8 µm Er Cr...
Proceedings of SPIE (March 09 2007)

Back to Top