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Proceedings Paper

Tunable up-conversion detector for single photon and bi-photon infrared spectroscopic applications
Author(s): Oliver Slattery; Lijun Ma; Paulina Kuo; Young-Su Kim; Xiao Tang
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Paper Abstract

A tunable waveguide-based frequency up-conversion detector is used for single photon level near infrared (IR) spectroscopic measurements. Applications include direct spectroscopic measurement of week near IR signals and remote bi-photon spectroscopy. We have demonstrated direct spectroscopy of single photon near IR signals from a greatly attenuated laser and a single photon source. We further applied the up-conversion spectrometer for frequency correlated bi-photon spectroscopy using a single photon source of non-degenerate photon pairs at 1310 nm (near IR) and 895 nm. In correlated bi-photon spectroscopy, the spectral function at one wavelength range of a remote object can be reproduced by locally measuring another (near IR) wavelength range using the up-conversion spectrometer and monitoring the coincidence counts. A near IR single photon detection efficiency of 32 % has been achieved with the up-conversion spectrometer. The spectral resolution of the system is approximately 0.2 nm at 1310 nm based on the acceptance width of the up-conversion chip used. In bi-photon spectroscopy, the spectral resolution for the correlated photons at 895 nm is approximately 0.1 nm. The sensitivity achieved using the up-conversion detector is -126 dBm at 1310 nm.

Paper Details

Date Published: 29 May 2013
PDF: 9 pages
Proc. SPIE 8726, Next-Generation Spectroscopic Technologies VI, 87260Y (29 May 2013); doi: 10.1117/12.2016070
Show Author Affiliations
Oliver Slattery, National Institute of Standards and Technology (United States)
Lijun Ma, National Institute of Standards and Technology (United States)
Paulina Kuo, National Institute of Standards and Technology (United States)
Young-Su Kim, National Institute of Standards and Technology (United States)
Xiao Tang, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 8726:
Next-Generation Spectroscopic Technologies VI
Mark A. Druy; Richard A. Crocombe, Editor(s)

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