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14 February 2007 Novel low-loss 3-element ring resonator for second-harmonic generation of 808nm into 404nm using periodically poled KTP
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Abstract
We present a novel ring resonator for second harmonic generation consisting of only two spherical mirrors and a refractive element. In our work we use periodically poled KTP as a nonlinear material for generating the second harmonic using an 808nm tapered grating stabilized external cavity laser as pump source. With 286mW of fundamental 808nm radiation coupled into the resonator, we generate 130mW blue light at 404 nm, resulting in a power conversion efficiency of 45%.
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Jesper Holm, Ole Bjarlin Jensen, Bernd Sumpf, Götz Erbert, Stefan Andersson-Engels, Peter E. Andersen, and Paul Michael Petersen "Novel low-loss 3-element ring resonator for second-harmonic generation of 808nm into 404nm using periodically poled KTP", Proc. SPIE 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI, 645504 (14 February 2007); https://doi.org/10.1117/12.700544
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