Single-longitudinal-mode generation in a Ho: YLF ring laser with double corner cubes resonator

Abstract In this paper, output characteristics of single-longitudinal-mode Ho: YLF ring laser are firstly investigated in double corner cubes configuration. Single-longitudinal-mode laser output is realized by a faraday rotator and a half-wave plate, and an F-P etalon is inserted into the cavity to realize wavelength tuning. The principle of unidirectional operation of the Ho: YLF ring laser with double corner cubes is firstly analyzed with the method of optic matrix and transition matrix. A highest single-longitudinal-mode power of 733 mW at 2065.68 nm is achieved and the slope efficiency is 12%. The tunable range is about 238 GHz and M2 factor is 1.21. The results show that the single-longitudinal-mode Ho: YLF ring cavity with double corner cubes is a potential way to improve the misalignment sensitivity.

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