Chinese Optics Letters, 2015, 13 (3): 031402, Published Online: Sep. 25, 2018
Orthogonally polarized dual-wavelength Nd:YLiF4 laser
Abstract
This Letter proposes a method to balance the gain and loss of the orthogonally polarized emissions of dual wavelengths in a solid laser cavity. By adjusting the tilt angle of the uncoated glass plate inserted into the cavity, the gain and loss of the orthogonally polarized emission lines with small intervals can be balanced to equalize the oscillation thresholds of the orthogonally polarized dual wavelengths. We select the birefringent crystal Nd:LiYF (Nd:YLF) as the gain media, and theoretically analyze the simultaneous oscillation conditions of dual wavelengths with π - and σ -polarized emissions from a four-level transition (F 3 / 2 4 → I 11 / 2 4 and F 3 / 2 4 → I 13 / 2 4 ) in Nd 3 + . A simple linear cavity structure is adopted in the experiment, and stable CW orthogonally polarized dual-wavelength laser outputs of 1047, and 1053, 1321, and 1313 nm are obtained.
Jing Zhang, HuiLong Liu, Jing Xia, Xihong Fu. Orthogonally polarized dual-wavelength Nd:YLiF4 laser[J]. Chinese Optics Letters, 2015, 13(3): 031402.