Real-time imaging using a 4.3-THz quantum cascade laser and a 320 x 240 microbolometer focal-plane array

被引：222
|
作者：
Lee, Alan W. M.
Williams, Benjamin S.
Kumar, Sushil
Hu, Qing
Reno, John L.
机构：
[1] MIT, Dept Elect Engn, Cambridge, MA 02139 USA
[2] MIT, Comp Sci & Res Lab Elect, Cambridge, MA 02139 USA
[3] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2006年 / 18卷 / 13-16期
基金：
美国国家科学基金会; 美国国家航空航天局;
关键词：
imaging; quantum cascade laser (QCL); real time; terahertz;
D O I：
10.1109/LPT.2006.877220
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report the use of a similar to 50-mW peak power 4.3-THz quantum cascade laser (QCL) as an illumination source for real-time imaging with a 320 x 240 element room-temperature microbolometer focal-plane array detector. The QCL is modulated synchronously with the focal-plane array for differential imaging. Signal-to-noise ratios of similar to 340 are achieved at a 20-frame/s acquisition rate, and the optical noise equivalent power of the detector array at 4.3 THz is estimated to be similar to 320 pW/root Hz. Both reflection and transmission mode imaging are demonstrated.
引用
收藏
页码：1415 / 1417
页数：3
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