Right-angle prism resonance cavity-based broadband terahertz wave radiation source
A right-angle prism and terahertz wave technology, applied in the field of terahertz wave optoelectronics, can solve the problems of high price, narrow line width, large divergence angle, etc., and achieve the effects of simple installation and debugging, simple and compact structure, and high resistance to detuning
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[0024] See figure 1 (a), figure 1 (a) is a schematic diagram of the overall structure of the broadband terahertz radiation source based on the right-angle prism resonator of the present invention, using the fundamental frequency light (1064nm) output of the electro-optic Q-switched pulse Nd:YAG laser 1 as the broadband terahertz radiation source Pump source, the polarization direction of the pump light 4 is parallel to the working substance MgO:LiNbO of the terahertz wave radiation source 3 The Z-axis direction of crystal 6 (doping concentration of 5% mol). Use the telescope system 2 to reduce the diameter of the pump light spot to 2mm, and then vertically enter the working material MgO:LiNbO along the X axis 3 Crystal 6, and as close as possible to MgO:LiNbO 3 The X-Z surface of the crystal 6 is used as the output surface of the terahertz wave to shorten the transmission path of the terahertz wave in the crystal.
[0025] Such as figure 2 As shown, MgO:LiNbO 3 Crystal 6 cutting ...
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