Efficient single-photon counting at 1.55 μm by means of frequency upconversion

被引：255

作者：

Albota, MA ^{[1
]}

Wong, FNC ^{[1
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

OPTICS LETTERS | 2004年 / 29卷 / 13期

关键词：

D O I：

10.1364/OL.29.001449

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate efficient single-photon detection at 1.55 mum by means of sum-frequency mixing with a strong pump at 1.064 mum in periodically poled lithium niobate followed by photon counting in the visible region. This scheme offers significant advantages over existing InGaAs photon counters: continuous-wave operation, higher detection efficiency, higher counting rates, and no afterpulsing. We achieved single-photon upconversion efficiency of 90% at 21.6 W of circulating power in a resonant pump cavity with a 400-mW Nd:YAG laser. We observed high background counts at strong circulating pump powers due to efficient upconversion of pump-induced fluorescence photons. (C) 2004 Optical Society of America.

引用

页码：1449 / 1451

页数：3

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