Abstract
We report a high-power, narrow linewidth and tunable quasi-continuous-wave (QCW) yellow laser system at 589.159 nm. The system is of a design employing single-pass sum-frequency generation (SFG) in a LBO crystal by mixing the 1064 nm with 1319 nm lines from a two diode-side-pumped Nd:YAG master oscillator-power amplifier (MOPA) laser system. With the pump power of 35 W at 1064 nm and 25 W at 1319 nm, a 7.5 W QCW output of the SFG yellow laser at 589.159 nm, which is the vacuum wavelength of a general sodium D2 line, is obtained with a linewidth less than 0.7 GHz and a beam-quality factor M 2=1.2. The wavelength of the laser can be precisely step-tuned from 589.148 to 589.167 nm with an increment of 0.13 pm by means of a temperature-controlled etalon.
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Xie, S., Bo, Y., Xu, J. et al. A 7.5 W quasi-continuous-wave sodium D2 laser generated from single-pass sum-frequency generation in LBO crystal. Appl. Phys. B 102, 781–787 (2011). https://doi.org/10.1007/s00340-010-4332-z
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DOI: https://doi.org/10.1007/s00340-010-4332-z