Comparison of an InSb Detector and Upconversion Detector for Infrared Polarization Spectroscopy

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Abstract

This paper compares the signal-to-noise ratio obtained using an InSb photodiode for infrared (IR) polarization spectroscopy to that obtained using an upconversion detector, and shows a factor 64 improvement by the change. Upconversion detection is based on using sum frequency generation to move the IR optical signal to near-visible wavelengths to improve the sensitivity.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics

Keywords

  • periodically poled lithium niobate, Polarization spectroscopy, PPLN, signal-to-noise ratio, SNR, upconversion
Original languageEnglish
Pages (from-to)793-797
JournalApplied Spectroscopy
Volume72
Issue number5
Early online date2017 Dec 27
Publication statusPublished - 2018
Publication categoryResearch
Peer-reviewedYes