Single-frequency, Q-switched Ho:YAG laser at room temperature injection-seeded by two F–P etalons-restricted Tm, Ho:YAG laser

作者：Tao Dai, Y. L. Ju, Baoquan Yao, Yingjie Shen, Wei Wang, You Wang · 发表于：Optics Letters · 年份：2012 · DOI：10.1364/ol.37.001850 · 被引用次数：56 · 研究领域：Solid State Laser Technologies、Laser Design and Applications、Advanced Fiber Laser Technologies

We demonstrated a 1.91 μm pumped, injection-seeded Q-switched Ho:YAG laser operating at room temperature. By inserting two Fabry-Perot etalons into the laser cavity, single-frequency Tm, Ho:YAG seed lasing was achieved at a wavelength of 2090.9 nm, with a typical output power of 60 mW. Single-frequency, nearly transform-limited Q-switched operation of the Ho:YAG laser was achieved by injection seeding. The output energy of the single-frequency Q-switched pulse is 7.6 mJ, with a pulse width of 132 ns and a repetition rate of 100 Hz. We measured the pulse spectrum, half-width of which was 3.5 MHz, by a heterodyne technique.