Design of diode-pumped dual-frequency Nd:YAG green laser with large frequency difference for absolute-distance interferometry
A novel scheme of diode-pumped dual-frequency Nd:YAg green laser with large frequency difference is proposed in this paper. When a polarized beaM splitter (PBS) is placed in resonant cavity of a diode-pumped intracavity KTP-frequency-doubled Nd:YAg green laser, a new birefringent filter consisting of PBS and KTP is formed (i.e., PBS-KTP) to select single longitudinal mode. A diode-pumped two-cavity dual-frequency green laser with a common medium of Nd:YAG has been designed, each resonant cavity of which is enforced to operate in single longitudinal mode by means of the birefringent filter of PBS-KTP. The frequency difference of the dual-frequency Nd:YAg laser at 532-nm can be tuned in a range of 0~360GHz, and its stability can be achieved approximately 10-6 by use of the Pound-Drever-Hall technique. Such a dual-frequency laser will be employed as an ideal light source of an absolute-distance interferometric system. The design principle is introduced briefly, the scheme and its feasibility of the dual-frequency laser are described and analyzed, respectively, and some preliminary results obtained experimentally are given.
Nd:YAG laser birefringent filter dual-frequency laser frequency difference absolute-distance interferometry
Ming-Xing Jiao Yun Liu Jun-Hong Xing
Department of Precision Instruments, Xian University of Technology, 5 South Section of Jinhua Road, Xian 710048,Shaanxi Province, Peoples Republic of China
国际会议
第四届仪器科学与技术国际会议( 4th International Symposium on Instrumentation and Science and Tcchnology)
哈尔滨
英文
1482-1487
2006-08-08（万方平台首次上网日期，不代表论文的发表时间）