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Title: Equivalent circuit-level model and improvement of terahertz quantum cascade lasers

An equivalent circuit-level model of terahertz (THz) quantum cascade lasers (QCLs) is developed by using rate equations. This model can be employed to investigate the characteristics of THz QCLs accurately and to improve their design. We use the circuit-level model to analyse a new active structure, which can improve the performance of THz QCLs by means of enhancing carrier injection. The simulation result shows that THz QCLs with the new active structure have a much higher performance compared with conventional THz QCLs. The high-performance THz QCLs are expected to be operated at higher temperatures. (lasers)
Authors:
; ; ; ;  [1]
  1. State Key Lab. of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, Peoples Republic of China (China)
Publication Date:
OSTI Identifier:
22375926
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 44; Journal Issue: 4; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPARATIVE EVALUATIONS; EQUIVALENT CIRCUITS; LASERS; PERFORMANCE; SIMULATION; THZ RANGE