Stretcher-shaped terahertz wave polarizing beam splitter

Abstract

The invention discloses a stretcher-like terahertz wave polarization beam splitter comprising a signal input end, a substrate, a first signal output end, and a second signal output end. A first rectangular flat board, a third rectangular flat board, a fourth rectangular flat board, a second rectangular flat board, a fifth rectangular flat board, and a sixth rectangular flat board are arranged on the upper surface of the substrate. The right end of the fourth rectangular flat board is provided with the first signal output end. The right side of the lower end of the third rectangular flat board is connected with the left end of the fifth rectangular flat board. The right end of the fifth rectangular flat board is connected with the left end of the sixth rectangular flat board. The right end of the sixth rectangular flat board is provided with the second signal output end. Terahertz signals are input from the signal input end; the first signal output end outputs TM wave; the second signal output end outputs TE wave; the third rectangular flat board and the fourth rectangular flat board function in multiple-mode interference so as to achieve polarization beam splitting for terahertz signals. The stretcher-like terahertz wave polarization beam splitter has the advantages of simple, compact structure, small size, high splitting rate, convenience of manufacture and the like.

Description

technical field [0001] The invention relates to a terahertz wave polarization beam splitter, in particular to a stretcher-shaped terahertz wave polarization beam splitter. Background technique [0002] Terahertz technology is a new technology developed in the late 1980s. The terahertz frequency domain refers to the frequency between 0.1THz and 10THz. The unique frequency range of terahertz waves (between the microwave frequency band and the optical frequency band) covers the molecular vibration and rotation spectra of most macromolecular substances. Regardless of its absorption spectrum, reflection spectrum or emission spectrum, the frequency band has obvious fingerprint spectrum characteristics, which is not available in microwave. In addition, terahertz waves can penetrate most substances to varying degrees, which is not available for infrared radiation. These characteristics determine the value of terahertz technology. The ever-growing terahertz wave technology has grea...

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Problems solved by technology

[0003] In recent years, the research on terahertz wave functional devices has been gradually carried out at home and abroad. The terahertz wave polarization beam splitter is a very important terahertz wave device, which is used to manipulate and control the terahertz wave in the terahertz wave system. At present, Many scientific research institutions at home and abroad are committed to this research and have made some progress, but the terahertz wave polarization beam splitter is the focus and difficulty in the research of terahertz wave functional devices, and its existing research results and progress are still very limited. , the existing terahertz polarization beam splitters are often complex in structure, bulky, difficult to manufacture and expensive, so it is necessary to design a terahertz polarization beam splitter with simple and compact structure, small size, light weight and high beam splitting efficiency To meet the needs of future terahertz wave technology applications

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