Title :
Theoretical analysis on device characteristics of quantum cascade lasers operating at λ~ 5.9 μm
Author :
Ko, Y.H. ; Chung, K.S. ; Yu, J.S.
Author_Institution :
Dept. of Electron. Eng., Kyung Hee Univ., Yongin, South Korea
Abstract :
We analyze theoretically the device characteristics, such as output power, slope efficiency, threshold current density, and threshold voltage, of quantum cascade lasers (QCLs) operating at lambda~5.9 mum for various cavity lengths and the results were compared with the experimental data. The influence of the number of active/injector stages in QCL on the device characteristics was also investigated.
Keywords :
aluminium compounds; gallium arsenide; indium compounds; laser beams; laser cavity resonators; quantum cascade lasers; InGaAs-InAlAs; QCL; active-injector stages; device characteristics; laser cavity length; quantum cascade lasers; slope efficiency; threshold current density; threshold voltage; wavelength 5.9 mum; Optical refraction; Optical scattering; Optical variables control; Optical waveguides; Power generation; Quantum cascade lasers; Quantum mechanics; Refractive index; Threshold current; Threshold voltage;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324767
