NASA NTRS · 20150001493
Sensitive Infrared Signal Detection by Upconversion Technique
Abstract
We demonstrated upconversion assisted detection of a 2.05-micron 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 micron pave the path to detect extremely weak infrared (IR) signals for remote sensing applications.
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Wong, Teh-Hwa, Yu, Jirong, Bai, Yingxin, Johnson, William, Chen, Songsheng, Petros, Mulugeta, Singh, Upendra N.. 2014-10-06. Sensitive Infrared Signal Detection by Upconversion Technique. https://ntrs.nasa.gov/citations/20150001493
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