Optical detection of terahertz radiation by using nonlinear parametric upconversion.
Optical detection of terahertz radiation by using nonlinear parametric upconversion.
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使用非线性参量上转换对太赫兹辐射进行光学检测。
DOI：
10.1364/ol.32.003248
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发表时间：
2007
期刊：
影响因子：
3.6
通讯作者：
S. Kaushik
中科院分区：
文献类型：
--
作者：
M. J. Khan;J. Chen;S. Kaushik
我们描述和演示敏感的太赫兹（THz）辐射的室温检测非线性上转换太赫兹到近红外区，依赖于电信组件。700 GHz的太赫兹辐射与1550 nm的泵浦光在GaAs体晶体中混合，产生1555.6 nm的闲频波，利用商用p-i-n二极管分离并检测闲频波。THz探测器在室温下工作，具有0.001%的固有THz到光子转换效率。
We describe and demonstrate sensitive room-temperature detection of terahertz (THz) radiation by nonlinearly upconverting terahertz to the near-infrared regime, relying on telecommications components. THz radiation at 700 GHz is mixed with pump light at 1550 nm in a bulk GaAs crystal to generate an idler wave at 1555.6 nm, which is separated and detected by using a commercial p-i-n diode. The THz detector operates at room temperature and has an intrinsic THz-to-optical photon conversion efficiency of 0.001%.