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Publication Citation: Spectral response of an upconversion detector and spectrometer

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Author(s): Paulina S. Kuo; Oliver T. Slattery; Yong-Su Kim; Jason S. Pelc; M. M. Fejer; Xiao Tang;
Title: Spectral response of an upconversion detector and spectrometer
Published: September 17, 2013
Abstract: We theoretically and experimentally investigate the spectral response of an upconversion detector and discuss implications for its use as an infrared spectrometer. Upconversion detection is based on high-conversion-efficiency sum-frequency generation (SFG). The spectral selectivity of an upconversion spectrometer is determined by the SFG spectral response function. This function changes with varying pump power. Working at maximum internal conversion efficiency is desirable for high sensitivity of the system, but the spectral response function is different at this pump power compared to the response function at low power. We calculate the theoretical spectral response of the upconversion detector as a function of pump power and obtain excellent agreement with upconversion spectra measured in a periodically poled LiNbO3 waveguide.
Citation: Optics Express
Volume: 21
Issue: 19
Pages: pp. 22523 - 22531
Keywords: infrared spectroscopy; nonlinear optics; sum-frequency generation
Research Areas: Optics, Spectrophotometry, Optical Physics, Quantum Information Technology
DOI: http://dx.doi.org/10.1364/OE.21.022523  (Note: May link to a non-U.S. Government webpage)