Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz
Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz
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量子级联激光器作为外差光谱仪的本地振荡器，光谱范围约为 4.745 THz
DOI：
10.1088/0268-1242/28/3/035011
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发表时间：
2013
影响因子：
1.9
通讯作者：
H. Grahn
中科院分区：
文献类型：
--
作者：
L. Schrottke;M. Wienold;R. Sharma;X. Lü;K. Biermann;R. Hey;A. Tahraoui;H. Richter;H. Hübers;H. Grahn
太赫兹外差光谱仪中的本机振荡器必须在精确定义的目标频率下以连续波模式工作。特别是对于先进的机载仪器，需要考虑工作温度和冷却要求等几个规格。我们已经开发了一种量子级联激光器（QCL）适用于作为本机振荡器的外差光谱的OI线在4.745太赫兹，这是特别感兴趣的天文学。我们展示了一个分布反馈QCL工作在连续波模式高达约60 K，它可以精确地调谐到目标频率时，在机械冷却器。
Local oscillators in terahertz heterodyne spectrometers have to be operated in continuous-wave mode at precisely defined target frequencies. In particular, for advanced airborne instruments, several specifications such as operating temperature and cooling requirements are necessary to be considered. We have developed a quantum-cascade laser (QCL) applicable as a local oscillator for heterodyne spectroscopy of the OI line at 4.745 THz, which is of particular interest for astronomy. We demonstrate a distributed-feedback QCL operating in continuous-wave mode up to about 60 K, which can be tuned precisely to the target frequency when operated in a mechanical cooler.
影响因子：
3.8
作者：
Fathololoumi, S.;Dupont, E.;Liu, H. C.
通讯作者：
Liu, H. C.