Continuous-wave hybrid index-antiguided and thermal-guided planar waveguide laser with large mode area

Yuanye Liu; Lee Casperson; Tsing-Hua Her

doi:10.1117/12.2079678

20 February 2015 Continuous-wave hybrid index-antiguided and thermal-guided planar waveguide laser with large mode area

Yuanye Liu, Lee Casperson, Tsing-Hua Her

Proceedings Volume 9342, Solid State Lasers XXIV: Technology and Devices; 934220 (2015) https://doi.org/10.1117/12.2079678
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

We present lasing experiments in index-antiguided (IAG) planar waveguides made of Nd:YAG (refractive index = 1.820) sandwiched by Terbium Gallium Garnet (refractive index = 1.954). For a core width of 220 μm, we observe fundamental mode oscillation with maximal 2.62 W output power and 0.109 slope efficiency. An analytical model is developed taking into account simultaneous index-antiguiding, gain guiding and thermal induced refractive focusing. For a core width of 400 μm, fundamental mode oscillation is only observed near the lasing threshold, suggesting that the maximally core width in IAG waveguides for fundamental mode operation depends on the strength of index antiguiding.

Citation Download Citation

Yuanye Liu, Lee Casperson, and Tsing-Hua Her "Continuous-wave hybrid index-antiguided and thermal-guided planar waveguide laser with large mode area", Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 934220 (20 February 2015); https://doi.org/10.1117/12.2079678

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