5 October 2017 High-power, widely tunable Tm:CaGdAlO4 laser resonantly pumped by a Raman fiber laser at ∼1.7 μm
Author Affiliations +
Abstract
We report on a high-power, continuously tunable Tm:CaGdAlO4 (Tm:CALGO) laser with a volume Bragg grating (VBG) as a wavelength selector and a homemade ∼1.7-μm Raman fiber laser as a pump source. Taking the advantages of high diffraction efficiency of VBG, low quantum loss of in-band pumping, and smooth and flat gain spectrum of Tm:CALGO, <5-W output power was achieved in the range of 1945.6 to 1993.7 nm, within a total tuning range from 1919.7 to 1993.7 nm, i.e., 74 nm. The beam quality M2 factors at 5-W output power around 1959.5 nm were 1.31 and 1.32 in the x- and y-directions, respectively.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yongguang Zhao, Yongguang Zhao, Fan Wu, Fan Wu, Xiaodong Xu, Xiaodong Xu, Deyuan Shen, Deyuan Shen, } "High-power, widely tunable Tm:CaGdAlO4 laser resonantly pumped by a Raman fiber laser at ∼1.7 μm," Optical Engineering 57(2), 021206 (5 October 2017). https://doi.org/10.1117/1.OE.57.2.021206 . Submission: Received: 12 April 2017; Accepted: 6 September 2017
Received: 12 April 2017; Accepted: 6 September 2017; Published: 5 October 2017
JOURNAL ARTICLE
4 PAGES


SHARE
RELATED CONTENT

Crystal fibers for high power lasers
Proceedings of SPIE (February 25 2013)
Optical refrigeration of Tm:YLF and Ho:YLF crystals
Proceedings of SPIE (March 06 2016)
Highly efficient CW Tm,Ho:GdVO4 laser pumped by a diode
Proceedings of SPIE (January 25 2005)
17 J Ho-Laser At 2 Microns
Proceedings of SPIE (March 23 1989)

Back to Top