We report an efficient technique to measure gain and losses of quantum cascade lasers (QCLs). It consists on the analysis of the Fabry-Perot fringes induced by the optical injection of a chirped distributed feedback QCL.
© 2009 The Optical Society
(130.0130) Integrated optics : Integrated optics
(130.0250) Integrated optics : Optoelectronics
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade
E. Benveniste, S. Laurent, A. Vasanelli, C. Manquest, C. Sirtori, M. Carras, and X. Marcadet, "Gain and Losses of Mid-Infrared Quantum Cascade Lasers by Frequency Chirping Spectroscopy," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper CThL3.