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

被引：224

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

页码：1415 / 1417

页数：3

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