Resonantly pumped 2.118 μm Ho : YAP laser Q-switched by a Cr2+: ZnS as a saturable absorber. (16th September 2015)

• Record Type: Journal Article
• Authors: Cui, Z; Duan, X M; Yao, B Q; Li, J; Li, X L; Dai, T Y; Li, C Y; Pan, Y B
• Is Part Of: Laser physics letters. Volume 12:Number 10(2015:Oct.)
• Publication Date: 2015-09-16
• Subjects: Q-switched -- saturable absorber -- Ho : YAP laser; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/10/105002
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A passively Q-switched Ho : YAP laser operating at room temperature with a Cr 2+ : ZnS saturable absorber pumped with a continuous wave Tm : YAP laser was demonstrated. A comparative analysis of laser performances with different output couplers was first carried out. Using Cr 2+ : ZnS as the saturable absorber, the maximum average output power 6.1 W was obtained at the pump power of 32.1 W, with a pulse repetition frequency of 7.5 kHz and a pulse width of 93.6 ns. The output central wavelength of the passively Q-switched laser shifted to 2111.7 nm from a continuous wave operation of 2118.7 nm. The beam quality factor M 2 was 1.4 on the x -axis and 1.6 on the y -axis with diffraction limited beam quality.