Sodium guide star laser generation by single-pass frequency doubling in a periodically poled near-stoichiometric LiTaO3 crystal
- 127 Downloads
We report in this work a continuous wave (CW) narrowband 589 nm light generation for the purpose of laser guide assisted adaptive optics. A 39 mm long 1 mm thick periodically poled near stoichiometric LiTaO3 crystal with duty cycle near 50% was fabricated using electrical poling at room temperature and pumped by a Raman fiber amplifier. We tested two temperature control ovens, and a maximum conversion efficiency of about 14.3%, corresponding to 4 W of yellow light with 28 W of fundamental power, and bandwidth less than 0.18 GHz was achieved.
Keywordssodium guide star laser periodically poling stoichiometric LiTaO3 Raman fiber amplifier frequency conversion
Unable to display preview. Download preview PDF.
- 7.Taylor L, Feng Y, Bonaccini Calia D, et al. Multi-watt 589-nm Na D2-line generation via frequency doubling of a Raman fibre amplifier: A source for LGS-assisted AO. Proc SPIE, 2006. 627249-3Google Scholar
- 12.Li F Q, Cheng X W, Yang Y, et al. Research on preparation and imaging of upper atmosphere sodium laser guide star. Sci China Phys Mech Astron, 2011, 41(11): 1261–1267Google Scholar