Quantum-cascade lasers for terahertz high-resolution spectroscopy

X. Lue, B. Roeben, K. Biermann, L. Schrottke, J. R. Wubs, U. Macherius, K. -D. Weltmann,J. H. van Helden,H. T. Grahn

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2023）

引用 0|浏览0

暂无评分

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.

查看译文

关键词

absolute densities,airborne astronomical instruments,Al/el,application-defined emission frequencies,continuous-wave mode,fine-structure transitions,frequency 3.36 THz,frequency 3.92 THz,frequency 4.75 THz,GaAs-AlAs/int,high-resolution absorption spectroscopy,local oscillators,mechanical cryocooler,N+/el,O/el,radiation sources,terahertz high-resolution spectroscopy,terahertz quantum-cascade lasers,THz QCL

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要