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

Journal Article · Mon Apr 28 00:00:00 EDT 2014 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2014V044N04ABEH015309· OSTI ID:22375926

Zhou, Wei; Liu, Shaobin; Wu, Jie; Zhang, Xiaoliu; Tang, Wu ^[1]

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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)

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)

• OSTI ID: 22375926
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 44, Issue 4; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
EQUIVALENT CIRCUITS
LASERS
PERFORMANCE
SIMULATION
THZ RANGE