A5047675647- Optical Coatings and Gratings
- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Terahertz technology and applications
- Plasmonic and Surface Plasmon Research
- Near-Field Optical Microscopy
- Superconducting and THz Device Technology
- Photonic and Optical Devices
- Microwave Engineering and Waveguides
Purple Mountain Observatory
2023-2024
University of Science and Technology of China
2021-2024
Chinese Academy of Sciences
2021
Efficient and accurate phase gratings hold immense significance in the realization of large format heterodyne array receivers at terahertz frequencies. Metallic have made substantial advancements terms operating wavelength number diffraction beams. Like most other diffractive optical devices, metallic are primarily optimized to operate one specific wavelength. Metasurfaces compositing arrays subwavelength nanostructures been demonstrated with various functions, by freely modifying...
High efficiency and accuracy phase gratings are of crucial importance for large format heterodyne array receivers at terahertz frequencies. Here, by developing a design approach that can create with arbitrary two-dimensional diffraction distributions, we have realized reflective metallic grating generates 2×2 beams 0.85 THz. The measured total power the beam pattern is 81.9%, which demonstrates least 17% improvement in compared standard pseudo-2D Fourier grating. In addition, report...
For heterodyne receivers, broadband and integrated local oscillator (LO) coupling schemes are crucial. In this paper, we present a novel terahertz receiver system based on one-pixel phase grating. We designed grating that can simultaneously couple the LO signals at 690, 850, 1300 GHz to superconducting hot-electron bolometer mixer incident angles of 25.7°, 20.6°, 13.3°, respectively. At these three frequencies, measured diffraction efficiencies as high 70%, 73%, 65%, total power 22%, 23%, in...