Title :
A compact four-wavelength Quantum Cascade laser source
Author :
Toor, Fatima ; Howard, Scott S. ; Gmachl, Claire F. ; Sivco, Deborah L.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ
Abstract :
A four-wavelength quantum cascade (QC) laser source that operates by using a single current channel is presented. The source includes two different heterogeneous QC lasers in two different waveguides, one with emission wavelengths of 7.0 mum/11.2 mum and the other with 8.7 mum /12.0 mum. Quantum cascade lasers with emission wavelengths of 8.7 mum, 11.2 mum and 12.0 mum have threshold current densities within around 15% of each other which allows them to be conveniently driven by a single current source.
Keywords :
current density; quantum cascade lasers; quantum cascade laser; single current channel; threshold current density; wavelength 11.2 mum; wavelength 12.0 mum; wavelength 7.0 mum; wavelength 8.7 mum; Chemical lasers; Gas lasers; Indium gallium arsenide; Laser modes; Laser transitions; Optical design; Optical waveguides; Quantum cascade lasers; Threshold current; Waveguide lasers; Multi-wavelength quantum cascade laser; heterogeneous cascade; single current channel operation;
Conference_Titel :
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the
Conference_Location :
Acapulco
Print_ISBN :
978-1-4244-1931-9
Electronic_ISBN :
978-1-4244-1932-6
DOI :
10.1109/LEOS.2008.4688864
