Author Affiliations
Abstract
The progress achieved on power scaling and compact and portable THz sources is reviewed. By reversely stacking the GaP plates, the photon conversion efficiency is improved from 25% to 40% which corresponds to the maximum value. When the number of the plates is increased from four to five, the output power decreases because of back conversion. The THz generation is also investigated by mixing the two frequencies generated by a single Nd:YLF solid-state laser. The average output power reaches 1 \mu W. The introduction of two Nd:YLF crystals significantly improves the output power to 4.5 μW. This configuration facilitates the generation of different output frequencies.
190.4410 Nonlinear optics, parametric processes 190.4360 Nonlinear optics, devices 190.4975 Parametric processes 140.3540 Lasers, Q-switched 140.3580 Lasers, solid-state Chinese Optics Letters
2011, 9(11): 110004
Author Affiliations
Abstract
College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072
A method of precisely calculating the external applied voltage and the optimum type-II phase matching angles for KTP crystal, which is used as both an intracavity electro-optic (EO) Q-switch and a frequency doubler, is presented. The effective EO coefficient along the phase-matching direction is defined to calculate the half-wave voltage and the quarter-wave voltage, and the precise calculation for the phase matching angles in the condition of KTP crystal optimum second harmonic phase matching is theoretically realized.
230.2090 Electro-optical devices 190.2620 Frequency conversion Chinese Optics Letters
2006, 4(7): 419
