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Proceedings Paper

Continuous-wave hybrid index-antiguided and thermal-guided planar waveguide laser with large mode area
Author(s): Yuanye Liu; Lee Casperson; Tsing-Hua Her
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Paper 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.

Paper Details

Date Published: 20 February 2015
PDF: 8 pages
Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 934220 (20 February 2015); doi: 10.1117/12.2079678
Show Author Affiliations
Yuanye Liu, The Univ. of North Carolina at Charlotte (United States)
Lee Casperson, The Univ. of North Carolina at Charlotte (United States)
Tsing-Hua Her, The Univ. of North Carolina at Charlotte (United States)


Published in SPIE Proceedings Vol. 9342:
Solid State Lasers XXIV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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