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Ytterbium (Yb3+) doped solid state materials are well-known for highly-efficient and wavelength-tunable laser operation at ~1 μm. The search for novel host matrices for Yb3+ doping which can simultaneously provide intense, smooth and broad spectral bands and attractive thermal properties is of high importance for power-scalable, tunable lasers and ultrafast oscillators and amplifiers. Disordered trigonal langasite-type crystals have been known for a long time due to their attractive thermo-mechanical properties and the suitability for rare-earth (RE3+) doping [1]. Recently, the calcium niobium gallium silicate, Ca3NbGa3Si2O12 (CNGS), has been studied as a laser host for Nd3+ ions [2]. In this work, we report on the growth, spectroscopy and efficient continuous-wave (CW) and passively Q-switched (PQS) laser operation of Yb:CNGS.
© 2017 IEEE
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