What question did this study set out to answer?

To develop and evaluate an efficient single-photon detection scheme at 1.55 µm by upconverting infrared signals into the visible spectrum.

July 1, 2004Optics Letters

Efficient single-photon counting at 155 µm by means of frequency upconversion

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Authors

MAMarius A. AlbotǎMIT Lincoln Laboratory FWFranco N. C. WongMassachusetts Institute of Technology

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Implication

Experimental study demonstrates 90% efficient single-photon detection at 1.55 micrometers via sum-frequency mixing, suggesting a faster alternative to traditional infrared sensors.

Key Points

To develop and evaluate an efficient single-photon detection scheme at 1.55 µm by upconverting infrared signals into the visible spectrum.
Coupled 1.55-µm single photons with a 1.064-µm pump inside periodically poled lithium niobate using sum-frequency mixing.
Enhanced pump power using a resonant cavity driven by a 400-mW Nd:YAG laser to reach 21.6 W of circulating power, followed by visible-light photon counting.
Achieved 90% single-photon upconversion efficiency at 21.6 W of circulating pump power.
Operated in continuous-wave mode without afterpulsing, enabling higher detection efficiency and faster counting rates than standard InGaAs detectors.
Observed elevated background counts at high circulating powers caused by the upconversion of pump-induced fluorescence photons.

Cite This Study

Albotǎ et al. (2004) studied this question.

synapsesocial.com/papers/69caaba47fa6f77f515f816d https://doi.org/10.1364/ol.29.001449

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Implication

Experimental study demonstrates 90% efficient single-photon detection at 1.55 micrometers via sum-frequency mixing, suggesting a faster alternative to traditional infrared sensors.

Efficient single-photon counting at 155 µm by means of frequency upconversion

Discussion

Member takes

Implication

Key Points

Cite This Study

Efficient single-photon counting at 155 µm by means of frequency upconversion

Discussion

Member takes

Implication

Key Points

Cite This Study

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