Journal
OPTICS LETTERS
Volume 39, Issue 18, Pages 5321-5324Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.39.005321
Keywords
-
Categories
Funding
- Swedish Research Council (VR)
- Swedish Energy Agency through the Centre for Combustion Science and Technology (CECOST)
- European Research Council Advanced Grant DALDECS
Ask authors/readers for more resources
We compare a nonlinear upconversion detector with a conventional cryogenic InSb detector for the detection of coherent infrared light showing near-shot-noise-limited performance in the upconversion system. The InSb detector is limited by dark noise, which results in a 500 times lower signal-to-noise ratio. The two detectors are compared for the detection of a coherent degenerate four-wave mixing (DFWM) signal in the mid-infrared, and applied to measure trace-level acetylene in a gas flow at atmospheric pressure, probing its fundamental rovibrational transitions. In addition to lower noise, the upconversion system provides image information of the signal, thus adding new functionality compared to standard point detection methods. We further show that the upconversion detector system can be implemented as a simple replacement of the cryogenic detector. (C) 2014 Optical Society of America
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available