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High-performance, widely tunable, single-mode, mid-infrared distributed feedback quantum cascade lasers
(1998)OSA Technical Digest ~ Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics (CLEO '98)Summary form only given. Quantum cascade (QC) lasers are a new type of semiconductor laser for the mid-infrared based on electronic intersubband transitions. Because of their high power output and above room temperature (RT) operation, QC lasers are prime candidates for laser-based portable and stand-alone environmental monitoring systems. For gas spectroscopy the lasers have to operate with stable single-mode emission and controlled ...Other Conference Item -
Resonant tunneling electron injection in quantum cascade laser structures
(1998)OSA Technical Digest ~ Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics (CLEO '98)Summary form only given. It has been shown that by judicious control of energy levels and wave functions one cannot only tailor the wavelength over a wide spectral range but also design the scattering rates and dipole matrix elements to improve the gain, thus lowering the threshold currents. In this paper, we present a complementary investigation that addresses the injector design and, more specifically, the phenomena controlling the ...Other Conference Item -
Strain-compensated In 0.7Ga 0.3As-Al 0.6In 0.4As quantum cascade lasers for 3-5 mum operation
(1998)OSA Technical Digest ~ Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics (CLEO '98)Summary form only given. We report quantum cascade lasers based on strained InGaAs-AlInAs at 3.5 /spl mu/m with optical powers up to 5 mW to T 280 K. Operations of the first buried-heterostructure QC lasers at 5 /spl mu/m also will be discussed.Other Conference Item -
Unipolar quantum cascade intersubband infrared lasers and LEDs
(1995)Technical Digest Serie / Optical Societe of America ~ QELS '95: Summaries of Papers Presented at the Quantum Electronics and Laser Science ConferenceOther Conference Item -
Mid-infrared quantum cascade lasers
(1994)LEOS ’94: Conference Proceedings: IEEE Lasers and Electro-Optics Society 1994 7th Annual MeetingOther Conference Item