Gigahertz modulation of tunable terahertz radiation from photomixers driven at telecom wavelengths

被引：10
|
作者：
Martin, M. [1 ]
Mangeney, J. [1 ]
Crozat, P. [1 ]
Chassagneux, Y. [1 ]
Colombelli, R. [1 ]
Zerounian, N. [1 ]
Vivien, L. [1 ]
Blary, K. [2 ]
机构：
[1] Univ Paris 11, Inst Elect Fondamentale, CNRS, UMR 8622, F-91405 Orsay, France
[2] CNRS, Inst Elect Microelect & Nanotechnol, UMR 8520, F-59652 Villeneuve Dascq, France
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 13期
关键词：
Terahertz waves - Antennas - Electromagnetic wave emission;
D O I：
10.1063/1.2993352
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Here, we report the gigahertz-rate modulation of a tunable terahertz carrier. Terahertz radiation, tunable from 300 GHz to 1.2 THz, is generated by mixing two telecom lasers with an offset frequency in an ultrafast In0.53Ga0.47As photoconductive device coupled to a broadband antenna. The microwave modulation applied to the telecom lasers is directly transferred to the terahertz carrier. A maximum modulation rate of 20 GHz has been achieved, and the bandwidth is independent of the carrier frequency. (C) 2008 American Institute of Physics.
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页数：3
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