8 November 2012 Coherent polarization locking of thermal-sensitive Ho:YAG laser
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Abstract
We had demonstrated the advantage of using Coherent Polarization Locking on thermal-sensitive Ho:YAG laser cavity. We overcome several thermal issues related to Ho:YAG laser by distributing the gain over a large volume. We passively coherent locked two orthogonal polarized lasers, achieving 9.6W of output power with near perfect (greater than 99%) combining efficiency. The resultant laser produced near diffraction-limited beam quality of M2 ~1.1 and excellent power stability. As compared to conventional laser cavity, we had shown the increased in single-pass absorption, suppression of output power saturation and improvement in beam quality using Coherent Polarization Locking.
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C.F. Chua, C.F. Chua, L.H. Tan, L.H. Tan, P.B. Phua, P.B. Phua, } "Coherent polarization locking of thermal-sensitive Ho:YAG laser", Proc. SPIE 8547, High-Power Lasers 2012: Technology and Systems, 85470U (8 November 2012); doi: 10.1117/12.970542; https://doi.org/10.1117/12.970542
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