Unit element beam splitting and combining interferometer

Abstract

The invention relates to a unit element beam splitting and combining interferometer which comprises an element, a light beam enters the element and then is split into two beams of light, namely a first beam of light and a second beam of light, the first beam of light and the second beam of light are respectively reflected for even times and odd times in the element, and the two beams of light arecombined again in the element after being reflected and finally emitted from the element. The problems that an existing interferometer is composed of multiple elements, quite complex, insufficient instability and the like are solved, beam splitting and beam combining can be achieved in the element at the same time through different reflection times and parity, and the interferometer has the advantages of being compact, stable, high in integration degree, high in efficiency, resistant to high power and the like. The interferometer can replace a traditional interferometer composed of multiple elements in many application scenes, for example, but not limited to vector light field generation, vortex beam topological charge measurement, quantum optical logic gates and the like, and has wide potential application.

Description

technical field

[0001] The invention relates to the technical field of interferometers and prism devices, in particular to a single-element beam splitting and combining interferometer. Background technique

[0002] The functions of existing prisms are usually light splitting, changing the direction of propagation, dispersion, polarization splitting, etc. A prism that realizes the dual process of "beam splitting + beam combining" in a single prism is still blank. In light field regulation and application, the most common means and requirements are: first split the beam (splitting the amplitude or splitting the wavefront), and then modulate the two beams separately before combining the beams for output. The most commonly used method is to use various interference optical paths: such as Sagnac interferometer, Mach-Zehnder interferometer, Michelson interferometer, etc. However, the use of this type of interferometer often requires multiple optical elements to form an optical p...

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