arXivDaily arXiv每日学术速递 周一至周五更新
arXiv physics/0201038physics.optics
收藏

双量子阱太赫兹电光调制电压控制波长转换

Voltage-controlled wavelength conversion by terahertz electro-optic modulation in double quantum wells

M. Y. Su, S. Carter, M. S. Sherwin, A. Huntington, L. A. Coldren

摘要:

利用频率为ω {THz}的太赫兹电场驱动非掺杂双量子阱(DQW)生长,同时用频率为ω {NIR}的近红外激光照射DQW。当沿生长方向施加直流电压,使激子态与THz和NIR场共振时,近红外上转换边带强度ω sideband = ω NIR + ω THz达到最大。在远离共振的地方没有可检测到的上转换。结果表明,使用门控DQW器件的全光波长移动之间的光通信信道分离高达几个太赫兹的可能性。

英文摘要:

An undoped double quantum well (DQW) was driven with a terahertz (THz) electric field of frequency ω_{THz} polarized in the growth direction, while simultaneously illuminated with a near-infrared (NIR) laser at frequency ω_{NIR}. The intensity of NIR upconverted sidebands ω_{sideband}=ω_{NIR} + ω_{THz} was maximized when a dc voltage applied in the growth direction tuned the excitonic states into resonance with both the THz and NIR fields. There was no detectable upconversion far from resonance. The results demonstrate the possibility of using gated DQW devices for all-optical wavelength shifting between optical communication channels separated by up to a few THz.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑