Quantum-cascade lasers for terahertz high-resolution spectroscopy

被引：0

作者：

Lue, X. ^{[1
]}

Roeben, B. ^{[1
,2
]}

Biermann, K. ^{[1
]}

Schrottke, L. ^{[1
]}

Wubs, J. R. ^{[3
]}

Macherius, U. ^{[3
]}

Weltmann, K. -D. ^{[3
]}

van Helden, J. H. ^{[3
]}

Grahn, H. T. ^{[1
]}

机构：

[1] Leibniz Inst Forsch Verbund Berlin eV, Paul Drude Inst Festkorperelekt, Hausvogteipl 5-7, D-10117 Berlin, Germany

[2] Phys Tech Bundesanstalt PTB, Inst Berlin, Abbestr 2-12, D-10587 Berlin, Germany

[3] Leibniz Inst Plasma Sci & Technol INP, Felix Haussdorff Str 2, D-17489 Greifswald, Germany

来源：

2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ | 2023年

关键词：

D O I：

10.1109/IRMMW-THz57677.2023.10299335

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed terahertz (THz) quantum-cascade lasers (QCLs) based on GaAs/AlAs heterostructures for the application-defined emission frequencies of 3.36, 3.92, and 4.75 THz, which correspond to fine-structure transitions of Al atoms, N+ ions, and O atoms, respectively. These THz QCLs can be operated in a mechanical cryocooler in continuous-wave mode, while a sufficient intrinsic tuning range of more than 5 GHz is maintained. This allows them to be implemented as local oscillators in airborne astronomical instruments and as radiation sources for high-resolution absorption spectroscopy to determine absolute densities of atoms and ions in plasmas.

引用

页数：2

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