Hollow metal cone guiding and laser focusing device

A metal cone and hollow technology, applied in optics, optical components, instruments, etc., can solve the problems of short transmission distance, divergence, and reduced spot size of high-intensity, and achieve high damage threshold, large focus intensity, and high damage threshold.

Inactive Publication Date: 2010-06-02
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

At home and abroad, the current methods used to generate such highly localized laser beams mainly include convex lens focusing and off-axis parabolic mirror focusing, etc., but these methods can only focus the laser to a maximum of 6-8 microns, and the spot cannot continue to be smaller , and after a very short distance, it diverges quickly due to the diffraction effect
[0003] In order to further reduce the spot size and solve the contradiction of short high-intensity transmission distance, a more effective focusing device and method are needed

Method used

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  • Hollow metal cone guiding and laser focusing device
  • Hollow metal cone guiding and laser focusing device
  • Hollow metal cone guiding and laser focusing device

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0048] see first figure 1 , figure 1It is a schematic diagram of the structure and principle of Embodiment 1 of the device of the present invention. The device for guiding and focusing laser with a hollow metal cone of the present invention includes a laser 1 emitting a laser beam, and a light-condensing element 2 and a laser beam are arranged in sequence in the direction of the laser beam emitted by the laser 1 Hollow metal cone 3, the distance between the laser 1 and the light-condensing element 2 is equal to the focal length of the light-condensing element 2, the incident port of the hollow metal cone 3 is the large-diameter port and the The distance between the condensing elements 2 is equal to the focal length of the condensing elements 2 .

[0049] In this embodimen...

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Abstract

The invention relates to a hollow metal cone guiding and laser focusing device which comprises a laser for transmitting a laser beam and is characterized in that a light-gathering element and a hollow metal cone are sequentially arranged in the direction of the laser beam transmitted by the laser, the distance between the laser and the light-gathering element is equal to the focal length of the light-gathering element, and the distance between an incident port which is a large-diameter port of the hollow metal cone and the light-gathering element is equal to the focal length of the light-gathering element. Compared with the prior art, the device has the advantages of large focusing strength, small spot size, high damage threshold and wide range of applications.

Description

technical field [0001] The invention relates to ultra-strong laser focusing, in particular to a hollow metal cone guiding and focusing laser equipment, which is suitable for the fields of optical storage, optical communication, optical microscopy, material processing, medical operation and diagnosis, particle acceleration and fast ignition. Background technique [0002] It is an important research topic to focus common-intensity lasers or ultra-intense ultrashort pulse lasers into extremely small and highly localized laser beams. Due to the extremely small intensity and highly localized laser beam has the characteristics of small spot size, highly concentrated intensity, large acceleration gradient, good directionality, and high efficiency of coupling into other light guide elements, it is produced in optical storage, optical communication, etc. , optical microscopy, material processing, medical surgery and diagnosis, particle acceleration and fast ignition and other fields ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/40
Inventor 曾夏辉范填元张军勇周平
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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