Tunable continuous wave (CW) green light generation between 517 nm and 538 nm at room-temperature has been demonstrated from a frequency-doubled broadly tunable quantum well (QW) external-cavity fiber-coupled diode laser by use of an uncoated periodically poled potassium titanyl phosphate (PPKTP) crystal waveguide crystal. Green light at 530 nm with maximum conversion efficiency of 14.8% and output power of 12.88 mW has been generated using a PPKTP crystal waveguide with the cross-sectional area of 3x5μm². The possibility of tunable second harmonic generation in the PPKTP crystal waveguides with the cross-sectional areas of 4x4μm² and 2x6μm² was also investigated.

Date Published: 27 February 2015
PDF: 6 pages
Proc. SPIE 9347, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV, 93470D (27 February 2015); doi: 10.1117/12.2078334

Published in SPIE Proceedings Vol. 9347:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
Konstantin L. Vodopyanov, Editor(s)