Switchable single-dual-wavelength Yb,Na:CaF2 waveguide lasers operating in continuous-wave and pulsed regimes

Yingying Ren, Chen Cheng, Yuechen Jia, Yang Jiao, Dengwang Li, Mark D. Mackenzie, Ajoy K. Kar, Feng Chen

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Abstract

Depressed-cladding waveguides are produced in a Yb,Na:CaF2 laser crystal by applying an ultrafast laser inscription. Under pumping at 946 nm, continuous-wave (CW) and Q-switched laser oscillations with low thresholds are realized in these waveguide structures. With the variation of pumping power, switchable single- and dual-wavelength laser emissions peaking at 1013.9 nm and 1027.9 nm are generated. The maximum output power achieved for CW lasing is about 170 mW, corresponding to an optical-to-optical conversion efficiency as high as 45.3%. A pulse energy of 0.13 μJ is obtained for the waveguide laser operating in the pulsed regime.

Original languageEnglish
Pages (from-to)1633-1641
Number of pages9
JournalOptical Materials Express
Volume8
Issue number6
Early online date22 May 2018
DOIs
Publication statusPublished - 1 Jun 2018

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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