Terahertz reflective nine-channel beam splitter under normal incidence
GUOYU LIANG1,
BO WANG1,*
,
YONGYUAN HUANG1,
YUQING XU1,
XUANTONG SHI1,
XU HUANG1,
RUIJUN LIU1,
KANGZHENG LIU1,
HONGSEN ZHENG1
Affiliation
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Abstract
A terahertz reflection beam splitter with a simple grating ridge under normal incidence is depicted in this paper. At a terahertz
frequency of 2.5200 THz (correspondingly the wavelength λ = 118.83 μm), the terahertz reflection splitter grating can achieve
a nine-port separation and has an excellent total diffraction efficiency which can reach 99%. For transverse electric (TE)
polarization, the incident wave can be diffracted into the 0th, ±1st, ±2nd, ±3rd and ±4th orders for 10.03%, 11.87%, 9.75%,
12.85%, and 10.23%, respectively. For transverse magnetic (TM) polarization, the total diffraction efficiency of the terahertz
reflection splitter grating reaches 99%. Through additional analysis of the energy distribution and the parameter tolerance, it is
clear that the grating exhibits exceptional beam-splitting characteristics and stability.
Keywords
Nine-port, Terahertz reflective beam splitter, Under normal incidence.
Citation
GUOYU LIANG, BO WANG, YONGYUAN HUANG, YUQING XU, XUANTONG SHI, XU HUANG, RUIJUN LIU, KANGZHENG LIU, HONGSEN ZHENG, Terahertz reflective nine-channel beam splitter under normal incidence, Optoelectronics and Advanced Materials - Rapid Communications, 18, 1-2, January-February 2024, pp.1-7 (2024).
Submitted at: Sept. 13, 2023
Accepted at: Feb. 9, 2024