Frequency regulation of Terahertz quantum cascade lasers by changing barrier thickness Article Swipe
Jiawen Luo
,
Fengwei Chen
,
Tao Jiang
,
Zhiqiang Zhan
,
Xuemin Wang
,
Qi Yang
,
Ruijiao Zou
,
Jia Li
,
Yong Zeng
,
Weidong Wu
,
Lixin Xu
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1088/1402-4896/acc5bb
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1088/1402-4896/acc5bb
Terahertz (THz) sources with different frequency are important to gas detection. THz quantum cascade lasers (QCLs) based on resonant phonon structure with different frequency emission by changing transition barrier thickness are hereby presented. By theoretically calculation, a 0.19 nm thickening change of transition barrier would cause an approximately 350 GHz regulation range in frequency, and is then confirmed by experimental results. The corresponding far field beam profile keeps almost unchanged. With the increase of the transition barrier thickness, the output power only decreases by 15%, but the threshold current density decreases 24%. This simple method contributes to a satisfactory gas-detection approach with a stability of relative high output power.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1088/1402-4896/acc5bb
- OA Status
- hybrid
- References
- 22
- Related Works
- 10
- OpenAlex ID
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- DOI
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https://doi.org/10.1088/1402-4896/acc5bbDigital Object Identifier
- Title
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Frequency regulation of Terahertz quantum cascade lasers by changing barrier thicknessWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-03-20Full publication date if available
- Authors
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Jiawen Luo, Fengwei Chen, Tao Jiang, Zhiqiang Zhan, Xuemin Wang, Qi Yang, Ruijiao Zou, Jia Li, Yong Zeng, Weidong Wu, Lixin XuList of authors in order
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https://doi.org/10.1088/1402-4896/acc5bbPublisher landing page
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://doi.org/10.1088/1402-4896/acc5bbDirect OA link when available
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Terahertz radiation, Cascade, Laser, Materials science, Range (aeronautics), Quantum, Optoelectronics, Physics, Optics, Chemistry, Composite material, Quantum mechanics, ChromatographyTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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