[21p-H135-1~11] Innovation and social implement of THz technologies

[21p-H135-5] Ultra-broadband Terahertz Quantum-Cascade Laser Sources based on Difference Frequency Generation

〇Kazuue Fujita¹, Akio Ito¹, Masahiro Hitaka¹, Tatsuo Dougakiuchi¹, Tadataka Edamura¹, Masamichi Yamanishi¹ (1.Hamamatsu Photonics)

Keywords:Quantum cascade laser,terahertz,difference frequency generation

Recently, terahertz sources based on intracavity difference-frequency generation (DFG) in dual-wavelength mid-infrared quantum cascade lasers (QCLs) have been demonstrated. In this talk, we present ultra-broadband room temperature terahertz QCL sources based on intra-cavity DFG, emitting continuously more than one octave in frequency between 1.8 and 3.7 THz.