Characterization of the NEP of Mid-Infrared Upconversion Detectors

Rasmus Lyngbye Pedersen; Lasse Høgstedt; Ajanta Barh; Lichun Meng; Peter Tidemand-Lichtenberg

doi:10.1109/LPT.2019.2904325

Characterization of the NEP of Mid-Infrared Upconversion Detectors

Rasmus Lyngbye Pedersen^*, Lasse Høgstedt, Ajanta Barh, Lichun Meng, Peter Tidemand-Lichtenberg

^*Corresponding author for this work

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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 UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2 -5 μ m 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 MIR wavelength of 339 μ m. We showed that the limiting factor here is not the no ise from the upconversion process (estimated NEP is 23 fW/ Hz at 339 μ m), but from the electrical noise in the photodetector itself. We also compared the performance of our UCD with previously published results and with market available direct MIR detectors. Additionally, we measured the optical noise of the UCD over its working spectral range (29 -36 μ m) and compared with numerical simulation.

Original language	English
Journal	IEEE Photonics Technology Letters
Volume	31
Issue number	9
Pages (from-to)	681-84
ISSN	1041-1135
DOIs	https://doi.org/10.1109/LPT.2019.2904325
Publication status	Published - 2019

Keywords

Infrared detectors
Noise
Nonlinear optical devices
Sensor systems and applications

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title = "Characterization of the NEP of Mid-Infrared Upconversion Detectors",

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 UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2 -5 μ m 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 MIR wavelength of 339 μ m. We showed that the limiting factor here is not the no ise from the upconversion process (estimated NEP is 23 fW/ Hz at 339 μ m), but from the electrical noise in the photodetector itself. We also compared the performance of our UCD with previously published results and with market available direct MIR detectors. Additionally, we measured the optical noise of the UCD over its working spectral range (29 -36 μ m) and compared with numerical simulation.",

keywords = "Infrared detectors, Noise, Nonlinear optical devices, Sensor systems and applications",

author = "Pedersen, {Rasmus Lyngbye} and Lasse H{\o}gstedt and Ajanta Barh and Lichun Meng and Peter Tidemand-Lichtenberg",

year = "2019",

doi = "10.1109/LPT.2019.2904325",

language = "English",

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T1 - Characterization of the NEP of Mid-Infrared Upconversion Detectors

AU - Pedersen, Rasmus Lyngbye

AU - Høgstedt, Lasse

AU - Barh, Ajanta

AU - Meng, Lichun

AU - Tidemand-Lichtenberg, Peter

PY - 2019

Y1 - 2019

N2 - 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 UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2 -5 μ m 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 MIR wavelength of 339 μ m. We showed that the limiting factor here is not the no ise from the upconversion process (estimated NEP is 23 fW/ Hz at 339 μ m), but from the electrical noise in the photodetector itself. We also compared the performance of our UCD with previously published results and with market available direct MIR detectors. Additionally, we measured the optical noise of the UCD over its working spectral range (29 -36 μ m) and compared with numerical simulation.

AB - 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 UCD is a combined contribution of NEPs from the upconversion process and from the photodetector, used for detecting the upconverted signal. The 2 -5 μ m 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 MIR wavelength of 339 μ m. We showed that the limiting factor here is not the no ise from the upconversion process (estimated NEP is 23 fW/ Hz at 339 μ m), but from the electrical noise in the photodetector itself. We also compared the performance of our UCD with previously published results and with market available direct MIR detectors. Additionally, we measured the optical noise of the UCD over its working spectral range (29 -36 μ m) and compared with numerical simulation.

KW - Infrared detectors

KW - Noise

KW - Nonlinear optical devices

KW - Sensor systems and applications

U2 - 10.1109/LPT.2019.2904325

DO - 10.1109/LPT.2019.2904325

M3 - Journal article

SN - 1041-1135

VL - 31

SP - 681

EP - 684

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 9

ER -

Characterization of the NEP of Mid-Infrared Upconversion Detectors

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