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Dual-signal-wave optical parametric oscillators (DSW OPOs) around 1.5 mum by using two periodically poled crystals was demonstrated experimentally. The widely tunable wavelength interval from 2.5 nm to 69.1 nm was obtained. It can be used for generation of terahertz (THz) waves from 0.3-8.9 THz by different frequency generation. With the incident pump power of 3 W at 50 kHz, the DSW OPO generated...
Continuously tunable coherent terahertz-wave generation from 0.1 to 2.7 THz can be achieved in isotropic semiconductor nonlinear crystals by difference frequency mixing. We experimentally demonstrated a high-power, narrow-linewidth, angle-tuned pulsed dual-wavelength KTP-OPO operating near the degenerate point, which was used as the pump source for terahertz-wave generation. We theoretically studied...
We propose a method for generating dual-wavelength terahertz radiation with a surface emitted configuration based on slant-stripe-type periodic poled lithium niobate (PPLN) crystal. The crystal is designed to be phase reserved for two difference frequency generation processes so that the predesigned dual-wavelength terahertz radiation at 1.43 THz and 2.07 THz can be achieved simultaneously. The estimated...
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