Title :
Terahertz difference-frequency generation in quantum cascade lasers with high conversion efficiency
Author :
Vijayraghavan, Karun ; Jang, Minsoo ; Jiang, Aimin ; Wang, Xiongfei ; Troccoli, Mariano ; Belkin, Mikhail A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA
Abstract :
Room-temperature, narrow-linewidth terahertz quantum cascade laser sources based on intracavity Cherenkov difference-frequency generation with emission at 3.5 THz, nearly 60μW power output, and conversion efficiency of approximately 0.55 mW/W2 are reported.
Keywords :
Cherenkov radiation; laser beams; laser cavity resonators; optical frequency conversion; quantum cascade lasers; frequency 3.5 THz; high conversion efficiency; intracavity Cherenkov difference-frequency generation; narrow-linewidth terahertz quantum cascade laser sources; power 60 muW; power output; temperature 293 K to 298 K; terahertz difference-frequency generation; Gratings; Optical waveguides; Pump lasers; Quantum cascade lasers; Slabs; Substrates; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
