A device and method for realizing light cage
A kind of optical cage, truncated cone-shaped technology, applied in the field of optics and optical engineering, can solve the problem that the particles cannot be omnidirectional and trapped.
Inactive Publication Date: 2016-01-20
SICHUAN UNIV
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Problems solved by technology
The invention not only inherits the advantages of the patent ZL200710048328.0 to directly generate the hollow beam and the gas laser beam with good quality and stable direction; it also inherits the position of the waist spot of the beam generated by the patent ZL200910216214.1 outside the cavity and the output beam increases with the transmission distance , from a hollow beam to a solid beam, and then to a hollow beam; and to overcome the spatial distribution of the output beam produced by patent ZL200910216214.1, the farther away from the solid part, the larger the hollow size, so the hollow beam realized by this laser Disadvantages of not being able to achieve all-round confinement of particles
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[0008] detailed description The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0009] The rotationally symmetrical concave total reflection mirrors 11 and 1 at the bottom of the inner and outer hollow circular platform resonators of the present invention all adopt circular optical glass or quartz blocks as substrates, and are suitable for He-Ne lasers and CO 2 Suitable for lasers, for very high output CO 2The laser uses a round copper block with good density and high hardness as the base, and uses a hole cutting device to cut the middle part of the two base materials according to the inner edge size requirements of the inner and outer ring mirrors, but the middle part of the two Should be glued to its own ring block for grinding. Due to the different sizes of the two mirrors, two sets of grinding molds are used. The abrasive tools for grinding the two mirror surfaces are made of low-carbon steel...
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The invention discloses a device and method for realizing a light cage, which belongs to the field of optics and optical engineering. It constructs and provides a device and a method for generating a light cage in a spatial distribution shape of an output beam. The light cage obtained by this method has the characteristics of rotationally symmetrical distribution. Because the device of the present invention adopts the inner and outer hollow circular frustum-shaped gas laser resonators to be nested in the same direction, the cavity parameters of the two resonators are reasonably set, so that the hollow parts of the hollow beams output by the two resonators overlap in the transmission space, and the beam space A three-dimensional space with a zero light field appears in the distribution, and the three-dimensional space is wrapped by a laser light field with a non-zero intensity distribution in an all-round three-dimensional manner to form a light cage. The invention can realize the distribution of low power in micro size and medium and high power in large size. The micro-sized and low-power optical cage realized by the invention can be used in biomedicine and scientific research, and the large-sized medium-high-power optical cage can be used in industrial applications, national defense, and the like.
Description
technical field [0001] The invention relates to the fields of optics and optical engineering, mainly a device and a method for obtaining a gas laser beam with optical cage shape distribution by a gas laser with two hollow circular frustum resonators nested in the same direction inside and outside. Background technique [0002] In the field of laser biomedical research, hollow beams are used as optical wrench and optical tweezers to control particles or cool atoms. The patent ZL200910216214.1 constructs and provides a scheme of using a laser to directly output a laser beam with a special spatial distribution shape. The position of the hollow part of the laser beam is farther from the output mirror than the position of the hollow part of the beam realized by the patent ZL200710048328.0. So more practical. The spatial distribution of the output beam of the laser of the patent ZL200910216214.1 evolves from a hollow beam to a solid beam and then to a hollow beam as the transmiss...
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IPC IPC(8): H01S3/06H01S3/03H01S3/22H01S3/083H01S3/08H01S3/09
Inventor 刘静伦陈梅
Owner SICHUAN UNIV