利用室温非线性量子级联激光器产生毫米波

Shohei Hayashi, A. Ito, T. Dougakiuchi, M. Hitaka, K. Fujita
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引用次数: 0

摘要

报告了在室温下工作的双波长中红外量子级联激光器的毫米波差频产生。为了克服低于 1 太赫兹的低中红外-太赫兹转换效率,该研究采用了一种具有较高非线性感性的长波长、高性能中红外量子级联激光器结构。通过设计将中红外泵浦有效分配到分布式反馈光栅的两个部分,获得了紧密分离的双波长(λ1 ∼ 13.53 μm,λ2 ∼ 13.39 μm)激光振荡。因此,在室温下成功观测到了频率为 231 GHz 的毫米波发射。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Millimeter-wave generation with a room-temperature nonlinear quantum cascade laser
Millimeter-wave difference frequency generation is reported for a dual-wavelength mid-infrared quantum cascade laser operating at room temperature. To overcome a low mid-infrared-to-terahertz conversion efficiency below 1 THz, a long-wavelength, high-performance mid-infrared quantum cascade laser structure with higher nonlinear susceptivity is adopted. By designing the efficient allocation of mid-infrared pumps to two sections of fabricated distributed feedback grating, a closely separated dual-wavelength (λ1 ∼ 13.53 μm and λ2 ∼ 13.39 μm) laser oscillation was obtained. Consequently, a millimeter-wave emission at a frequency of 231 GHz was successfully observed at room temperature.
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