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Characterization of the NEP of mid-infrared upconversion detectors

Pedersen, Rasmus Lyngbye LU ; Hogstedt, Lasse ; Barh, Ajanta ; Meng, Lichun and Tidemand-Lichtenberg, Peter (2019) In IEEE Photonics Technology Letters 31(9). p.681-684
Abstract

We present a scheme to estimate the noise equivalent power (NEP) of the frequency upconversion detectors (UCDs), detecting mid-infrared (MIR) light. The NEP of the UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2-5- μm MIR range is particularly investigated in this letter using a bulk periodically poled lithium niobate-based CW-intracavity UCD. We measured the NEP of UCD as 20 fW Hz at the MIR wavelength of 3.39μm. Here, we showed that the limiting factor is not the noise from the upconversion process (estimated NEP is 2.3 fW Hz at 3.39 μm) but from the electrical noise in the photodetector itself. We also compared the performance of our UCD... (More)

We present a scheme to estimate the noise equivalent power (NEP) of the frequency upconversion detectors (UCDs), detecting mid-infrared (MIR) light. The NEP of the UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2-5- μm MIR range is particularly investigated in this letter using a bulk periodically poled lithium niobate-based CW-intracavity UCD. We measured the NEP of UCD as 20 fW Hz at the MIR wavelength of 3.39μm. Here, we showed that the limiting factor is not the noise from the upconversion process (estimated NEP is 2.3 fW Hz at 3.39 μm) but from the electrical noise in the photodetector itself. We also compared the performance of our UCD with the previously published results and with market available direct MIR detectors. In addition, we measured the optical noise of the UCD over its working spectral range (2.9- 3.6 μm) and compared with the numerical simulation.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Infrared detectors, noise, nonlinear optical devices, sensor systems and applications
in
IEEE Photonics Technology Letters
volume
31
issue
9
article number
8665941
pages
4 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85065056432
ISSN
1041-1135
DOI
10.1109/LPT.2019.2904325
language
English
LU publication?
yes
id
b7174aed-4009-4778-93e3-1d6435736f55
date added to LUP
2019-05-13 14:36:33
date last changed
2022-04-25 23:33:42
@article{b7174aed-4009-4778-93e3-1d6435736f55,
  abstract     = {{<p>We present a scheme to estimate the noise equivalent power (NEP) of the frequency upconversion detectors (UCDs), detecting mid-infrared (MIR) light. The NEP of the UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2-5- μm MIR range is particularly investigated in this letter using a bulk periodically poled lithium niobate-based CW-intracavity UCD. We measured the NEP of UCD as 20 fW Hz at the MIR wavelength of 3.39μm. Here, we showed that the limiting factor is not the noise from the upconversion process (estimated NEP is 2.3 fW Hz at 3.39 μm) but from the electrical noise in the photodetector itself. We also compared the performance of our UCD with the previously published results and with market available direct MIR detectors. In addition, we measured the optical noise of the UCD over its working spectral range (2.9- 3.6 μm) and compared with the numerical simulation.</p>}},
  author       = {{Pedersen, Rasmus Lyngbye and Hogstedt, Lasse and Barh, Ajanta and Meng, Lichun and Tidemand-Lichtenberg, Peter}},
  issn         = {{1041-1135}},
  keywords     = {{Infrared detectors; noise; nonlinear optical devices; sensor systems and applications}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{681--684}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Photonics Technology Letters}},
  title        = {{Characterization of the NEP of mid-infrared upconversion detectors}},
  url          = {{http://dx.doi.org/10.1109/LPT.2019.2904325}},
  doi          = {{10.1109/LPT.2019.2904325}},
  volume       = {{31}},
  year         = {{2019}},
}