High-stability single-frequency green laser with a wedge Nd:YVO4 as a polarizing beam splitter |
| |
Authors: | Yaohui Zheng Kunchi Peng |
| |
Affiliation: | State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China |
| |
Abstract: | The effect of the large power depletion of the fundamental wave in the phase-matched polarization on the stability of the second-harmonic wave output from an intracavity frequency-doubled ring laser is discussed. It has been demonstrated that the instability resulting from the unbalanced power depletion of the fundamental waves can be eliminated by using a wedge laser rod. The function dependence of the wedge angle and the laser power is concluded. An intracavity frequency-doubled ring laser with a wedge Nd:YVO4 laser crystal and a LBO doubler is designed and built. Comparing with similar lasers but without using the wedge laser crystal, the frequency-conversion efficiency, the power stability and the polarization purity of the second-harmonic wave output from the laser with a wedge laser rod are significantly improved. The single-frequency green laser of 6.5 W at 532 nm, with the polarization degree more than 500:1 and the power stability better than ±0.3% for 3 h, was experimentally achieved. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|