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arXiv 0802.1841cond-mat.mtrl-sci
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基于硅双光子吸收的红外单光子探测器

Infrared Single-Photon Detector based on Silicon Two-Photon Absorption

Alex Hayat, Pavel Ginzburg, Meir Orenstein

摘要:

提出了一种基于硅雪崩光电二极管室温下双光子吸收的红外单光子探测方案,探测光子的能量低于带隙,能量差由泵浦场补充。建立了直接和间接半导体中非简并双光子吸收的量子非微扰模型,得到了合适的非发散速率,从而优化了器件效率。所提出的单片检测器是简单的,微型的,可集成的,不需要相位匹配,同时不损害性能,并表现出更好的效率比竞争的上变频方案(约1个数量级)类似的光泵浦水平。

英文摘要:

We propose a scheme for infrared single-photon detection based on two-photon absorption at room-temperature in Si avalanche photodiodes, where the detected photon's energy is lower than the bandgap and the energy difference is complemented by a pump field. A quantum non-perturbative model is developed for non-degenerate two-photon absorption in direct and indirect semiconductors yielding proper non-divergent rates allowing device efficiency optimization. The proposed monolithic detector is simple, miniature, integrable and does not require phase matching, while not compromising the performance and exhibiting even better efficiency than the competing up-conversion schemes (~1 order of magnitude) for similar optical pump levels.

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