Atomic optical rotation type band-rejection trap and application method thereof

Abstract

The invention relates to an atomic optical rotation type band-rejection trap. The atomic optical rotation type band-rejection trap comprises a first atomic gas chamber filled with atomic gas, two Glan-Taylor prisms, a stable static magnetic field source, a second atomic gas chamber filled with atomic gas and two temperature control circuit systems, wherein the two Glan-Taylor prisms are parallel to each other in the polarization directions of two beams of light and are disposed on two sides of the first atomic gas chamber, and gas atoms in the first atomic gas chamber and laser can have sufficient Faraday optical rotation effect under the condition of an external magnetic field; the stable static magnetic field source generates an even static magnetic field for the first atomic gas chamber, and the magnetic field direction is parallel to the laser propagation direction; the second atomic gas chamber and the laser can have saturated absorption effect; the two temperature control circuit systems act on the first atomic gas chamber and the second atomic gas chamber respectively. The invention further discloses an application method of the atomic optical rotation type band-rejection trap. The atomic optical rotation type band-rejection trap and the application thereof have the advantages that narrow-band band-rejection characteristics on specific wavelengths, high transmittance beyond a rejection band and a high rejection ratio in the rejection band are obtained through controllable Faraday anomalous dispersion effect and saturated absorption effect at the atomic transition wavelength position.

Description

technical field [0001] The invention relates to the technical field of band-rejection traps in optical frequency bands, in particular to an atomic optical rotation band-rejection trap and a method for using the same. Background technique [0002] The band stop notch filter in the optical frequency band (hereinafter referred to as the notch filter) has the characteristics of a narrow band stop notch at a specific wavelength, and has many unique advantages such as high transmittance outside the stop band and high rejection ratio in the stop band. . The band-stop notch filter in the optical frequency band has common and important wide applications in different basic scientific research and spectral application fields such as laser Brillouin spectroscopy, biological living tissue imaging, laser and atomic spectrum filtering. [0003] The traditional band-stop notch filter in the optical frequency band is an interference plate-type band-stop notch filter realized by multiple coa...

AI Technical Summary

Problems solved by technology

[0003] The traditional band-stop notch filter in the optical frequency band is an interference plate-type band-stop notch filter realized by multiple coating technology. It has two disadvantages: first, the band-stop band width is too wide, up to nanometers to several nanometers; The second disadvantage is that the central wavelength of the stop band varies with the angle of the incident light, and there is no absolute value

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