Journal
OPTICS LETTERS
Volume 42, Issue 13, Pages 2567-2570Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.42.002567
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Funding
- National Natural Science Foundation of China (NSFC) [61475088, 61378022, 61422511]
- Independent Innovation Foundation of Shandong University (SDU) [2013HW013]
- Young Scholars Program of ShandongUniversity (SDU) [2015WLJH38]
- Open Research Fund of the State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute, Hefei, China [SLK2016KF01]
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A Tm3+ ion and Y3+ ion co-doped CaF2 crystal was grown and characterized, in which spectral and lasing performance was presented for the first time, to the best of our knowledge. Under diode end-pumping, in a continuous-wave regime, maximum output power of 453 mW was delivered under an absorption pump power of 2.5 W, corresponding to an optical-to-optical conversion efficiency of 17.9% and a slope efficiency of 21%. With a birefringent quartz plate, wavelength-tunable operation with a tunable range of more than 190 nm was realized. The results show that Tm; Y:CaF2 is a promising laser crystal operating in a spectral region ranging from 1850 nm to 2050 nm. (C) 2017 Optical Society of America
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