Terahertz metasurface quantum-cascade VECSELs [electronic resource] : theory and performance
- Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2017. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- 12 pages : digital, PDF file
- Additional Creators:
- Sandia National Laboratories, United States. Department of Energy. Office of Basic Energy Sciences, United States. National Nuclear Security Administration, National Aeronautics and Space Administration Announcement, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- A longstanding challenge for terahertz quantum-cascade (QC) lasers is achieving both a high power and high-quality beam pattern, this is due in part due to their use of sub-wavelength metallic waveguides. Recently, the vertical-external-cavity surface-emitting laser (VECSEL) concept was demonstrated for the first time in the terahertz range and for a QC-laser. This is enabled by the development of an amplifying metasurface reflector capable of coupling incident free-space THz radiation to the QC-laser material such that it is amplified and re-radiated. The THz metasurface QC-VECSEL initiates a new approach for making QC-lasers with high power and excellent beam pattern. Furthermore, the ability to engineer the electromagnetic phase, amplitude, and polarization response of the metasurface enables lasers with new functionality. Our article provides an overview of the fundamental theory, design considerations, and recent results for high-performance THz QC-VECSELs.
- Published through SciTech Connect., 04/12/2017., "sand--2017-4613j", "652954", IEEE Journal of Selected Topics in Quantum Electronics 23 6 ISSN 1077-260X AM, and Luyao Xu; Christopher Curwen; Daguan Chen; John Reno; Tatsuo Itoh; Benjamin Williams.
- Funding Information:
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