Energy collection efficiency of tungsten transition-edge sensors in the near-infrared

被引：15

作者：

Lita, A. E. ^{[1
]}

Miller, A. J. ^{[2
]}

Nam, S. ^{[1
]}

机构：

[1] NIST, Div Optoelect, Boulder, CO 80305 USA

[2] Albion Coll, Dept Phys, Albion, MI 49224 USA

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2008年 / 151卷 / 1-2期

关键词：

single-photon detector; electron-phonon thermal coupling;

D O I：

10.1007/s10909-007-9627-z

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-photon detectors operating at visible and near-infrared wavelengths with high detection efficiency and low noise are a requirement for many quantum-information applications. Detection of visible and near-infrared light at the single-photon level and discrimination between one- and two-photon absorption events place stringent requirements on TES design in terms of heat capacity, thermometry, and optical detection efficiency. Energy loss in the conversion of the photon energy in tungsten TESs to heat degrades the performance of these devices. By fabricating TESs on surface-micromachined Si3N4 membranes we improved the energy collection efficiency by a factor of two, to similar to 80% energy efficiency.

引用

页码：125 / 130

页数：6

共 7 条

[1] Detection of single infrared, optical, and ultraviolet photons using superconducting transition edge sensors [J].