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Title:Design and Characterization of Quantum-Cascade Lasers
Author(s):Lerttamrab, Maytee
Doctoral Committee Chair(s):Chuang, Shun-Lien
Department / Program:Electrical and Computer Engineering
Discipline:Electrical and Computer Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Abstract:From SIMS experiment, MBE-grown QCL structure exhibit high controllability and uniformity. The position of the PL peak is very close to the location predicted by our model. THz radiation from an MBE grown bound-to-continuum QCL is observed with the lasing wavelength of 104 mum. The light-current-voltage characteristics as well as the lasing spectrum are measured at different temperature. The characteristic temperature is extracted to be 144 K, while the quantum efficiency is found to be around 8-13% with the tunability of 2 nm/K. Both the lasing energy transition and the threshold current density are in good agreement with our calculation.
Issue Date:2006
Description:93 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006.
Other Identifier(s):(MiAaPQ)AAI3223649
Date Available in IDEALS:2015-09-25
Date Deposited:2006

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