Affiliation:
1. Chinese Academy of Sciences
2. University of the Chinese Academy of Sciences
3. University of Chinese Academy of Sciences
Abstract
A robust 20-W continuous-wave single frequency 589 nm laser is developed to aim for sodium guide star in astronomy. The source is based on applying π-depth binary phase modulation to a single frequency seed laser along with 3 steps of strain in the gain fiber to suppress the stimulated Brillouin scattering in the high power 1178 nm amplifier and realizing the recovery of single frequency after frequency doubling in a periodically poled LiTaO3 crystal. The efficiency of frequency doubling reaches up to 41.6%. To the best of our knowledge, it is the highest power reported for continuous-wave 589 nm laser generation by single-pass frequency doubling. The approach significantly simplifies the sodium guide star laser design and improves robustness.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Science and Technology Commission of Shanghai Municipality
Subject
Atomic and Molecular Physics, and Optics
Cited by
7 articles.
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