Terahertz quantum cascade laser as local oscillator in a heterodyne receiver
Terahertz quantum cascade laser as local oscillator in a heterodyne receiver
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DOI：
10.1364/opex.13.005890
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发表时间：
2005-07-25
期刊：
影响因子：
3.8
通讯作者：
Linfield, EH
中科院分区：
文献类型：
--
作者：
Hübers, HW;Pavlov, SG;Linfield, EH
研究了太赫兹量子级联激光器作为外差接收机本振器的性能。测量了束流分布，并将其转换为近似高斯分布，从而使量子级联激光器的场型与超导热电子辐射热混频器天线的场型有很好的匹配。噪声温度测量与热电子测辐射热计和2.5太赫兹量子级联激光器产生了相同的结果与气体激光器作为本地振荡器。(C)2005年，美国光学学会。
Terahertz quantum cascade lasers have been investigated with respect to their performance as a local oscillator in a heterodyne receiver. The beam profile has been measured and transformed in to a close to Gaussian profile resulting in a good matching between the field patterns of the quantum cascade laser and the antenna of a superconducting hot electron bolometric mixer. Noise temperature measurements with the hot electron bolometer and a 2.5 THz quantum cascade laser yielded the same result as with a gas laser as local oscillator. (C) 2005 Optical Society of America.