1. Phase-matching condition for THz wave generation via difference frequency generation using InxGa1-xSe mixed crystals
- Author
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Mayu Nakajima, Katsuya Watanabe, Tadao Tanabe, Yohei Sato, Chao Tang, and Yutaka Oyama
- Subjects
Amplified spontaneous emission ,Materials science ,business.industry ,Scanning electron microscope ,Terahertz radiation ,chemistry.chemical_element ,Flux ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,010309 optics ,Optics ,chemistry ,0103 physical sciences ,X-ray crystallography ,0210 nano-technology ,business ,Refractive index ,Indium ,Excitation - Abstract
Terahertz (THz) waves at 9.7, 10.1 and 10.6 THz were generated via difference frequency generation in high-quality InxG1-xaSe mixed crystals with a relatively high indium compositions (x = 0.040, 0.048, 0.074) grown from an indium flux. The phase-matching angle for THz wave generation was measured for each indium content. As a result, it is confirmed that the incident angle of the excitation light satisfying the phase-matching condition is shifted to a higher angle with an increase in the indium content.
- Published
- 2020
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