20 February 2014 Efficient generation of orange light by frequency-doubling of a quantum-dot laser radiation in a PPKTP waveguide
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Abstract
Orange light with maximum conversion efficiency exceeding 10% and CW output power of 12.04 mW, 10.45 mW and 6.24 mW has been generated at 606, 608, and 611 nm, respectively, from a frequency-doubled InAs/GaAs quantum-dot external-cavity diode laser by use of a periodically-poled KTP waveguides with different cross-sectional areas. The wider waveguide with the cross-sectional area of 4×4 μm2 demonstrated better results in comparison with the narrower waveguides (3×5 μm2 and 2×6 μm2) which corresponded to lower coupling efficiency. Additional tuning of second harmonic light (between 606 and 614 nm) with similar conversion efficiency was possible by changing the crystal temperature.
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Ksenia A. Fedorova, Ksenia A. Fedorova, Grigorii S. Sokolovskii, Grigorii S. Sokolovskii, Philip R. Battle, Philip R. Battle, Daniil A. Livshits, Daniil A. Livshits, Edik U. Rafailov, Edik U. Rafailov, } "Efficient generation of orange light by frequency-doubling of a quantum-dot laser radiation in a PPKTP waveguide", Proc. SPIE 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII, 896405 (20 February 2014); doi: 10.1117/12.2037834; https://doi.org/10.1117/12.2037834
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