V-shaped and W-shaped combined mirror structure for selecting angular polarization

Abstract

The invention belongs to the technical field of optics, and particularly relates to a V-shaped and W-shaped combined mirror structure for selecting angular polarization. The V-shaped and W-shaped combined mirror structure comprises a V-shaped cone mirror and a W-shaped cone mirror which are fixed together and centrally symmetric, an incident hole is formed in the center of the V-shaped cone mirror, a reflecting surface of the V-shaped cone mirror comprises an outer cone surface and an inner cone surface, a reflecting surface of the W-shaped cone mirror comprises an outer cone reflecting surface and an inner cone reflecting surface, the outer cone reflecting surface is positioned in a central region, the inner cone reflecting surface is positioned in a peripheral region, the outer cone surface and the inner cone surface are respectively opposite to the inner cone reflecting surface, and cone angles of the outer cone surface, the inner cone surface, the outer cone reflecting surface and the inner cone reflecting surface are 90 degrees. The V-shaped and W-shaped combined mirror structure is simple in structure, fine in symmetry, high in misalignment resistance, excellent in heat stability and mechanical performance, simple to manufacture and low in cost, and can be widely applied to gas, solid and semiconductor lasers for generating high-power and high-purity angular polarization light.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a V-shaped and W-shaped combined mirror structure for selecting angular polarization. Background technique [0002] Angularly polarized light is a ring-shaped beam. The polarization direction of any point on the ring is perpendicular to the radial direction. The laser beam output by the laser can be processed to obtain angularly polarized light. Due to the special polarization vector structure of angularly polarized light, it has been applied in many fields. In the field of scientific research, angularly polarized light can be used to guide atoms. Under strong focusing, angularly polarized light can also be used as "optical tweezers" to capture particles. Angularly polarized light can also be used in two-photon fluorescence imaging to break through the diffraction limit and improve resolution. In the field of industrial processing, angularly polarized light can be...

AI Technical Summary

Problems solved by technology

However, since the production method of the birefringent crystal needs to cooperate with other technologies such as small hole mode selection, the stability of the implementation is poor, and the polarization purity of the obtained angularly polarized light is not high; the design and manufacture of the grating mirror is complicated and the price is relatively expensive.

Images