Title :
Linewidth enhancement factor of a type-II quantum-cascade laser
Author :
Lerttamrab, M. ; Chuang, S.L. ; Yang, R.Q. ; Hill, C.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
We directly measured the optical gain, refractive index change, and the linewidth enhancement factor of a type-II quantum-cascade laser. We obtained very low linewidth enhancement factor of 0.83 near threshold.
Keywords :
infrared sources; quantum cascade lasers; refractive index; spectral line breadth; superradiance; amplified spontaneous emission spectrum; linewidth enhancement factor; midinfrared lasers; optical gain; quantum-cascade laser; refractive index change; type-II laser;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
