Multi-stack quantum cascade lasers

Author

Blanchard, R. ; Pfluegl, Christian ; Diehl, L. ; Dupuis, Russell ; Capasso, Federico

Author_Institution

Harvard Univ., Cambridge, MA, USA

fYear

2012

fDate

27-30 Aug. 2012

Firstpage

147

Lastpage

150

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Indium Phosphide and Related Materials (IPRM), 2012 International Conference on

Conference_Location

Santa Barbara, CA

ISSN

1092-8669

Print_ISBN

978-1-4673-1725-2

Type

conf

DOI

10.1109/ICIPRM.2012.6403343

Filename

6403343