High power, room temperature, terahertz sources and frequency comb based on difference-frequency generation at CQD
High power, room temperature, terahertz sources and frequency comb based on difference-frequency generation at CQD
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基于 CQD 差频生成的高功率、室温、太赫兹源和频率梳
DOI：
10.1117/12.2635322
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Razeghi, Manijeh
中科院分区：
文献类型：
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作者：
Razeghi, Manijeh
量子级联激光器（QCL）由于其在功率、效率和光谱覆盖范围等方面的快速发展，正成为中红外和太赫兹波段的主要激光光源。由于其独特的子带间跃迁和快速的载流子寿命，QCL具有很强的非线性光学特性，使其成为各种非线性光学产生的理想平台。其中，基于差频产生（DFG）的太赫兹（THz）光源和基于四波混频效应的频率梳是最令人兴奋的现象，可能会给中红外（Mid-IR）和太赫兹光谱学带来革命性的变化。在本文中，我们将简要讨论我们的研究的最新进展。这包括高功率高效率QCL，基于DFG-QCL的高功率室温THz源，室温THz频率梳，以及高功率QCL频率梳的注入锁定。所开发的QCL是下一代光谱和传感中红外光源的绝佳候选者。
Quantum cascade laser (QCL) is becoming the leading laser source in the mid-infrared and terahertz range due to its rapid development in power, efficiency, and spectral covering range. Owing to its unique intersubband transition and fast carrier lifetime, QCL possesses strong nonlinear susceptibilities that makes it the ideal platform for a variety of nonlinear optical generations. Among this, terahertz (THz) source based on difference-frequency generation (DFG) and frequency comb based on four wave mixing effect are the most exciting phenomena which could potentially revolutionize spectroscopy in mid-infrared (mid-IR) and THz spectral range. In this paper, we will briefly discuss the recent progress of our research. This includes high power high efficiency QCLs, high power room temperature THz sources based on DFG-QCL, room temperature THz frequency comb, and injection locking of high-power QCL frequency combs. The developed QCLs are great candidates as next generation mid-infrared source for spectroscopy and sensing.