Experimental investigations of second harmonic generation in germanium-doped optical glass fibers

Frank Wu

doi:10.1117/12.809680

23 February 2009 Experimental investigations of second harmonic generation in germanium-doped optical glass fibers

Frank Wu

Proceedings Volume 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII; 71971D (2009) https://doi.org/10.1117/12.809680
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

Experiments were carried out in order to investigate Second Harmonic Generation (SHG) in germanium-doped optical glass fibers, relying on a mode-locked Q-switched neodymium yttrium aluminum garnet (Nd:YAG) laser with high peak power intensity. The preparation or writing conditions for optical fibers were investigated. SHG was observed successfully under a synchronous pump of the fundamental infrared and seeding green lights, with a maximum of 82 μW from second harmonic generation being observed in the optical fiber from a 60 mW input, corresponding to a conversion efficiency of 0.14%. The pump laser used in the experiments was a Nd:YAG laser, operated Q-switched and mode-locked at 1064 nm. The laser delivered approximately 100 ps mode-locked pulses at a 75.6 MHz repetition rate, modulated by a 2 kHz frequency Q-switched pulse envelope of 260 nanoseconds' duration (Full Width Half Maximum or FWHM).

Citation Download Citation

Frank Wu "Experimental investigations of second harmonic generation in germanium-doped optical glass fibers", Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 71971D (23 February 2009); https://doi.org/10.1117/12.809680

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