Yang ZHU, Xiaofei ZANG. Terahertz metalens with extended focal depth and polarization controllable[J]. Optical Instruments, 2022, 44(6): 23
- Optical Instruments
- Vol. 44, Issue 6, 23 (2022)
Fig. 1. Schematic diagram of the polarization conversion metalens with extended focal depth
Fig. 2. Schematic diagram of the unit structure parameters of designed metasurface, as well as the transmittance and conversion efficiency of a single structure
Fig. 3. The electric field intensity distribution on thex -z plane of the metalens with extended focal length and polarization conversion and the metalens with normal focal length and polarization conversion
Fig. 4. Dual focus multiplexing metalens of extended focal length and polarization conversion
Fig. 5. The electric field intensity distribution on the focal plane of the metalens with extended focal length and controllable polarization
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