Title :
Multi-stack quantum cascade lasers
Author :
Blanchard, R. ; Pfluegl, Christian ; Diehl, L. ; Dupuis, Russell ; Capasso, Federico
Author_Institution :
Harvard Univ., Cambridge, MA, USA
Abstract :
We demonstrate a double-waveguide quantum cascade laser (QCL) consisting of two full broadband QCLs vertically integrated into a single monolithic device. Up to 1.1W peak power at room temperature is obtained for this record thick QCL. Coupling between the two laser waveguides is minimized to reduce gain competition. Simultaneous lasing on Fabry-Perot modes separated by as much as 360 cm-1 is obtained. This design opens the route to high-power ultra-broadband mid-infrared sources.
Keywords :
infrared sources; integrated optoelectronics; laser beams; laser modes; optical design techniques; quantum cascade lasers; waveguide lasers; Fabry-Perot modes; double-waveguide quantum cascade laser; full broadband QCL; gain competition; high-power ultrabroadband midinfrared sources; laser waveguide coupling; multistack quantum cascade lasers; power 1.1 W; temperature 293 K to 298 K; thick QCL; vertically integrated single monolithic device; Broadband communication; Laser modes; Measurement by laser beam; Optical waveguides; Quantum cascade lasers; Waveguide lasers; Infrared spectra; Quantum cascade lasers; Semiconductor waveguides;
Conference_Titel :
Indium Phosphide and Related Materials (IPRM), 2012 International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
978-1-4673-1725-2
DOI :
10.1109/ICIPRM.2012.6403343
