具有常见双上态有源区的中红外量子级联激光器中有效的太赫兹波产生

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Pub Date : 2015-11-12 DOI:10.1109/IRMMW-THZ.2015.7327480

K. Fujita, A. Ito, M. Hitaka, T. Dougakiuchi, T. Edamura, M. Yamanishi, S. Jung, M. Belkin

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引用次数: 0

摘要

本文报道了一种基于腔内差频产生的中红外量子级联激光器室温单模太赫兹源的性能，该源具有常见的双上态(DAU)有源区。由于对DAU有源区域进行了巨大光学非线性设计，采用双周期埋置分布式反馈光栅的DAU器件工作在10.7 um和9.7 um两个单模中红外波长下，产生了~2.9 THz单模太赫兹输出，侧模抑制比为~25 dB。在室温下获得了0.8 mW/W的中红外到太赫兹的高转换效率。

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Efficient terahertz-wave generation in mid-infrared quantum-cascade lasers with a common dual-upper-state active region

We report the performance of room temperature, single mode terahertz sources based on intracavity difference frequency generation in mid-infrared quantum cascade lasers with a common dual-upper-state (DAU) active region. As a result of designing of DAU active region for giant optical nonlinearity, the DAU devices with a dual-period buried distributed feedback grating operate in two single-mode mid-infrared wavelengths at 10.7 um and 9.7 um, and produce single-mode THz output at ~2.9 THz with a side mode suppression ratio of ~25 dB. A high mid-infrared to THz conversion efficiency of 0.8 mW/W is obtained at room temperature.

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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

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