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Optical Engineering • Open Access

Sensitive infrared signal detection by upconversion technique
Author(s): Teh-Hwa Wong; Jirong Yu; Yingxin Bai; William Johnson; Songsheng Chen; Mulugeta Petros; Upendra N. Singh

Paper Abstract

We demonstrated upconversion assisted detection of a 2.05-μm signal by sum frequency generation to generate a 700-nm light using a bulk periodically poled lithium niobate crystal. The achieved 94% intrinsic upconversion efficiency and 22.58% overall detection efficiency at a pW level of 2.05  μm pave the path to detect extremely weak infrared (IR) signals for remote sensing applications.

Paper Details

Date Published: 6 October 2014
PDF: 6 pages
Opt. Eng. 53(10) 107102 doi: 10.1117/1.OE.53.10.107102
Published in: Optical Engineering Volume 53, Issue 10
Show Author Affiliations
Teh-Hwa Wong, Science Systems and Applications, Inc. (United States)
Jirong Yu, NASA Langley Research Ctr. (United States)
Yingxin Bai, Science Systems and Application, Inc. (United States)
William Johnson, Montana State Univ. (United States)
Songsheng Chen, NASA Langley Research Ctr. (United States)
Mulugeta Petros, NASA Langley Research Ctr. (United States)
Upendra N. Singh, NASA Langley Research Ctr. (United States)


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