Product Introduction

Terahertz isolator is a unidirectional pass through deviceNon interactive devices. The broadband terahertz isolator we have developed is based on magneto-optical media and does not require an external magnetic field.

The terahertz isolator consists of two terahertz polarizers polarized in specific directions and a magneto-optical medium that rotates the polarization state of the incident broadband terahertz beam by 45 °. The operating mechanism of a terahertz isolator is as follows: the terahertz beam passes through the first polarizer to become a linearly polarized beam, and then passes through a magnetized barium aluminum hexagonal ferrite. Due to the Faraday effect, the polarization state of the terahertz beam is rotated by 45 °. Next, the terahertz beam passes through the second polarizer (at a 45 ° angle to the first polarizer), so the direction of terahertz polarization after passing through the magneto-optical medium is exactly the same as the polarization direction of the second polarizer; When the same terahertz beam is reflected back to the terahertz isolator, its polarization state will also be rotated by 45 °, and it will be orthogonal to the polarization direction of the first polarizer that was initially incident and cannot be emitted. The above is the operating mechanism of terahertz isolators.

Terahertz isolatortechnical parameter

Figure 1, amplitude transmittance spectra of transmission and reflection

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Shanghai Yichi Optoelectronic Technology Co., Ltd
Address: Room 1108, No. 955 Jianchuan Road, Minhang District, Shanghai
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