Vector light beam generation device based on dye gain

Abstract

The invention relates to a vector light beam generation device based on dye gain. An employed conical surface light field return element has an axisymmetric prism structure. One end of the element is a top conical curved surface, and the other end of the element is a top plane vertical to the symmetric axis. The single axisymmetric prism structure is employed as a one-end feedback part of a resonant cavity. A tubular cavity is a dye gain container, one end of the dye gain container is equipped with a reflector, and the other end of the dye gain container is equipped with the conical surface light field return element. The reflector and the conical surface light field return element form a laser resonant cavity. Based on dye gain and the conical surface optical effect principle, combined with polarization selection characteristics of the Brewster angle, by utilization of the Brewster angle, polarization state selection is achieved, and radial polarization vector light beam output is achieved. In addition, based on annular conical curved surface, strong focusing of intracavity radial polarization vector light beams is achieved and vertical polarization state light field output is achieved. The device is advantaged by simple manufacturing technology, concise structure and convenient construction, can achieve radial polarization vector light beam output and vertical polarization state light field output.

Description

technical field [0001] The invention relates to an optical technology, in particular to a vector beam generation device based on dye gain. Background technique [0002] The laser generating device is a device that uses the principle of stimulated radiation to amplify or oscillate light in certain excited substances. The generation of laser requires particle number reversal and greater gain than loss. The laser generating device must include an excitation source and a working medium. At present, common laser generating devices include gas lasers, solid-state lasers, dye lasers, and semiconductor lasers. Recent literature has also shown new lasers such as nano-lasers and living biological lasers. [0003] In the prior art, there is a dye laser light source, see an authorized US patent, US patent name: Line-narrow dye laser, patent number: US7254156B2, authorized time: August 7, 2007, inventor: Bernd Nikolaus, etc. people. The fuel laser has considerable advantages, but there...

AI Technical Summary

Problems solved by technology

The fuel laser has considerable advantages, but there are still some essential deficiencies: 1) The system uses optical grating micro-nano structure to form feedback, so the system in essence has high requirements on the preparation process, and the process of preparing the laser is complex and difficult ;2) The laser system includes multiple components such as wedge-shaped components, and the requirements for mutual position and orientation setting are high, resulting in complex structure of the entire system, difficult installation and adjustment, reducing the reliability of the system, and affecting the scope of use of the light source and application flexibility; 3) This laser is essentially unable to achieve the output of radially polarized vector beams, and essentially cannot achieve the output of longitudinally polarized light fields

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