Ultra-broadband room-temperature terahertz quantum cascade laser sources based on difference frequency generation

被引：46

作者：

Fujita, Kazuue ^{[1
]}

Hitaka, Masahiro ^{[1
]}

Ito, Akio ^{[1
]}

Yamanishi, Masamichi ^{[1
]}

Dougakiuchi, Tatsuo ^{[1
]}

Edamura, Tadataka ^{[1
]}

机构：

[1] Hamamatsu Photon KK, Cent Res Lab, Hamakitaku, Hamamatsu, Shizuoka 4348601, Japan

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 15期

关键词：

CONTINUOUS-WAVE;

D O I：

10.1364/OE.24.016357

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present ultra-broadband room temperature monolithic terahertz quantum cascade laser (QCL) sources based on intra-cavity difference frequency generation, emitting continuously more than one octave in frequency between 1.6 and 3.8 THz, with a peak output power of similar to 200 mu W. Broadband terahertz emission is realized by nonlinear mixing between single-mode and multi-mode spectra due to distributed feedback grating and Fabry-Perot cavity, respectively, in a mid-infrared QCL with dual-upper-state active region design. Besides, at low temperature of 150 K, the device produces a peak power of similar to 1.0 mW with a broadband THz emission centered at 2.5 THz, ranging from 1.5 to 3.7 THz. (C) 2016 Optical Society of America

引用

页码：16357 / 16365

页数：9

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