کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
850096 | 909279 | 2013 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High-temperature all-optical intersubband quantum well Terahertz switch High-temperature all-optical intersubband quantum well Terahertz switch](/preview/png/850096.png)
In this article an asymmetric intersubband quantum well structure as a high temperature terahertz (THz) optical switch is proposed. In our proposed structure the incoming low power energy photon (THz control signal) causes an optical switching. In this structure we introduce an optical terahertz switch based on coherent population trapping (CPT) phenomena. In the presence of electromagnetic THz field, quantum interference between the terahertz control field and short-wavelength probe field under appropriate condition, the medium becomes transparent (zero absorption) for the probe field. So the absorption and refraction characteristic of optical probe field can be modified with THz radiation. Therefore this idea is suitable for all – optical terahertz switching.
Journal: Optik - International Journal for Light and Electron Optics - Volume 124, Issue 19, October 2013, Pages 3987–3991