Directional terahertz emission from diffusion-engineered InAs structures
| Autor: | Yim, Jong-Hyuk, Jeong, Hoonil, Song, Jin-Dong, Jho, Young-Dahl |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OE.21.019709 |
| Popis: | We have designed and fabricated a new type of terahertz (THz) emitter that radiates THz waves along the surface-normal direction because of the lateral distributions of the transient electric dipoles. The excitation and measurements were performed using a conventional THz time-domain spectroscopy scheme with femtosecond optical pulses. The corrugated mirror patterns on the InAs layers made the radiation directional along the surface-normal direction, and the emission efficiency was controlled by adjustment of the pattern width. Comment: 4 pages, 3 figures |
| Databáze: | arXiv |
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