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Theoretical research on cascaded terahertz difference-frequency generation based on sphalerite crystals 被引量:1
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作者 李敬辉 李喜福 +3 位作者 张会云 张玉萍 Mayilamu Musideke 姚建铨 《Optoelectronics Letters》 EI 2012年第5期389-392,共4页
A theoretical model of cascaded terahertz(THz) difference-frequency generation is established based on one-dimensional coupled-wave equations.The relationships between sphalerite crystals' wave vector mismatches a... A theoretical model of cascaded terahertz(THz) difference-frequency generation is established based on one-dimensional coupled-wave equations.The relationships between sphalerite crystals' wave vector mismatches and difference-frequency pump waves are analyzed.To produce terahertz wave with the frequency of 1.5 THz,80-order cascaded difference-frequency is applied.By introducing crystal absorption,we calculate the optimum crystal length and pump frequency under actual circumstances.It is found that Stokes waves dominate the terahertz waves output in cascaded progress,and cascaded difference-frequency can increase the photon conversion efficiency obviously. 展开更多
关键词 Conversion efficiency Terahertz waves
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