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Title: Supercontinuum Fourier transform spectrometry with balanced detection on a single photodiode

Abstract

We demonstrate a method of combining a supercontinuum light source with a commercial Fourier transform spectrometer, using a novel approach to dual-beam balanced detection, implemented with phase-sensitive detection on a single light detector. A 40 dB reduction in the relative intensity noise is achieved for broadband light, analogous to conventional balanced detection methods using two matched photodetectors. Unlike conventional balanced detection, however, this method exploits the time structure of the broadband source to interleave signal and reference pulse trains in the time domain, recording the broadband differential signal at the fundamental pulse repetition frequency of the supercontinuum. The method is capable of real-time correction for instability in the supercontinuum spectral structure over a broad range of wavelengths and is compatible with commercially designed spectrometers. A proof-of-principle experimental setup is demonstrated for weak absorption in the 1500-1600 nm region.

Authors:
 [1];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Howard Hughes Medical Inst., Ashburn, VA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1303027
Alternate Identifier(s):
OSTI ID: 1420632
Report Number(s):
BNL-112541-2016-JA
Journal ID: ISSN 0021-9606; R&D Project: CO006; KC0301020
Grant/Contract Number:  
SC00112704; AC02-98CH10886; AC02- 98CH10886; SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 145; Journal Issue: 8; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Goncharov, Vasily, and Hall, Gregory. Supercontinuum Fourier transform spectrometry with balanced detection on a single photodiode. United States: N. p., 2016. Web. doi:10.1063/1.4961655.
Goncharov, Vasily, & Hall, Gregory. Supercontinuum Fourier transform spectrometry with balanced detection on a single photodiode. United States. https://doi.org/10.1063/1.4961655
Goncharov, Vasily, and Hall, Gregory. 2016. "Supercontinuum Fourier transform spectrometry with balanced detection on a single photodiode". United States. https://doi.org/10.1063/1.4961655. https://www.osti.gov/servlets/purl/1303027.
@article{osti_1303027,
title = {Supercontinuum Fourier transform spectrometry with balanced detection on a single photodiode},
author = {Goncharov, Vasily and Hall, Gregory},
abstractNote = {We demonstrate a method of combining a supercontinuum light source with a commercial Fourier transform spectrometer, using a novel approach to dual-beam balanced detection, implemented with phase-sensitive detection on a single light detector. A 40 dB reduction in the relative intensity noise is achieved for broadband light, analogous to conventional balanced detection methods using two matched photodetectors. Unlike conventional balanced detection, however, this method exploits the time structure of the broadband source to interleave signal and reference pulse trains in the time domain, recording the broadband differential signal at the fundamental pulse repetition frequency of the supercontinuum. The method is capable of real-time correction for instability in the supercontinuum spectral structure over a broad range of wavelengths and is compatible with commercially designed spectrometers. A proof-of-principle experimental setup is demonstrated for weak absorption in the 1500-1600 nm region.},
doi = {10.1063/1.4961655},
url = {https://www.osti.gov/biblio/1303027}, journal = {Journal of Chemical Physics},
issn = {0021-9606},
number = 8,
volume = 145,
place = {United States},
year = {Thu Aug 25 00:00:00 EDT 2016},
month = {Thu Aug 25 00:00:00 EDT 2016}
}

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Cited by: 11 works
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Works referenced in this record:

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Works referencing / citing this record: