885 nm pumped,high efficiency single-frequency Nd:YAG ring laser |
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Authors: | M. L. Li W. F. Zhao W. Hou B. Xiong S. B. Zhang X. C. Lin J. M. Li |
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Affiliation: | 1.Laboratory of All-Solid-State Laser Sources, Institute of Semiconductors,Chinese Academy of Sciences,Beijing,China |
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Abstract: | We report an efficient single-frequency ring laser pumped directly into emitting level by a fiber-coupled laser diode (FCLD) at 885 nm for the first time. 4.8 W laser at 1064 nm was obtained in a 0.7 at % Nd:YAG with 63% slope efficiency and 51.7% light-light efficiency in absorbed pump power. At the same time, the line width of the longitudinal mode was about 50 MHz, and the beam was nearly diffraction-limited with M2 ≈ 1.07. |
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