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DETZ, H. ANDREWS, A. KAINZ, M. SCHÖNHUBER, S. ZEDERBAUER, T. MACFARLAND, D. KRALL, M. DEUTSCH, C. BRANDSTETTER, M. KLANG, P. SCHRENK, W. UNTERRAINER, K. STRASSER, G.
Original Title
Evaluation of Material Systems for THz Quantum Cascade Laser Active Regions
Type
journal article in Web of Science
Language
English
Original Abstract
Quantum cascade lasers (QCLs) have been realized in several different material systems. In the mid-infrared, active regions are predominantly based on In0.53Ga0.47As and InAs as quantumwellmaterial. Market-ready devices routinely provide continuous-wave operation at room temperature. For their THz counterparts, the situation is less clear. The most common material system for THz QCLs is the inherently lattice-matched combination of GaAs with Al0.15Ga0.85As barriers. Yet, these devices still only reach a maximum operating temperature of 200 K with a lack of progress within the past years. Based on the identification of key parameters, this work reviews material systems for quantum cascade lasers with an emphasis on material and growth-related aspects and the goal to identify promising candidates for future device generations. Similar active regions realized in different material systems allow to estimate the gain per unit thickness, as well as total growth times and relative thickness errors.
Keywords
III–V heterostructures, intersubband devices, molecular beam epitaxy, quantum cascade lasers, superlattices
Authors
DETZ, H.; ANDREWS, A.; KAINZ, M.; SCHÖNHUBER, S.; ZEDERBAUER, T.; MACFARLAND, D.; KRALL, M.; DEUTSCH, C.; BRANDSTETTER, M.; KLANG, P.; SCHRENK, W.; UNTERRAINER, K.; STRASSER, G.
Released
26. 9. 2018
ISBN
1862-6300
Periodical
physica status solidi (a)
Year of study
1
Number
State
Federal Republic of Germany
Pages from
Pages to
8
Pages count
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.201800504
BibTex
@article{BUT150301, author="Hermann {Detz} and Aaron M. {Andrews} and Martin A. {Kainz} and Sebastian {Schönhuber} and Tobias {Zederbauer} and Donald {MacFarland} and Michael {Krall} and Christoph {Deutsch} and Martin {Brandstetter} and Pavel {Klang} and Werner {Schrenk} and Karl {Unterrainer} and Gottfried {Strasser}", title="Evaluation of Material Systems for THz Quantum Cascade Laser Active Regions", journal="physica status solidi (a)", year="2018", volume="1", number="1", pages="1--8", doi="10.1002/pssa.201800504", issn="1862-6300", url="https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.201800504" }