DocumentCode :
65431
Title :
Low-Noise Infrared Spectroscopy via Tunable Frequency Upconversion at Single-Photon Level
Author :
Ruikai Tang ; Wenjie Wu ; Xiongjie Li ; Haifeng Pan ; Heping Zeng ; Wu, E.
Author_Institution :
State Key Lab. of Precision Spectrosc., East China Normal Univ., Shanghai, China
Volume :
27
Issue :
15
fYear :
2015
fDate :
Aug.1, 1 2015
Firstpage :
1642
Lastpage :
1645
Abstract :
Infrared spectroscopy plays a significant role in applied science as well as in fundamental science. Lots of research works have been focused on the infrared spectrum measurement over the last few decades. Recently, the Fourier transfer spectrometer based on frequency comb lasers arouses a great deal of research interest for its fast and accurate measurement. However, the sensitivity of infrared spectrometers still requires improvement. Here, we demonstrate an efficient infrared spectrometer with high detection sensitivity at single-photon level using a wavelength tunable frequency upconversion detection technique with synchronized laser sources. Because of the high conversion efficiency and low background noise, the infrared transmittance spectrum of hydrogen sulfide gas was successfully recovered by this spectrometer at single-photon level. This kind of spectrometers could be potentially applied in gas monitoring and remote spectrum analysis.
Keywords :
Fourier transform spectroscopy; hydrogen compounds; infrared spectra; infrared spectrometers; infrared spectroscopy; laser noise; laser tuning; optical frequency conversion; Fourier transfer spectrometer; H2S; background noise; frequency comb lasers; gas monitoring; hydrogen sulfide gas; infrared spectrometer; infrared transmittance spectrum; low-noise infrared spectroscopy; remote spectrum analysis; single-photon level; wavelength tunable frequency upconversion; Absorption; Crystals; Detectors; Laser excitation; Optical fiber polarization; Photonics; Pump lasers; Frequency conversion; Infrared spectroscopy; frequency conversion;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2015.2433295
Filename :
7108010
Link To Document :
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