Novel small-sized mechanical variable laser attenuation device

A mechanical and light intensity attenuation technology, which is applied in the coupling of optics, optical components, and optical waveguides, can solve the problems that the adjustable range of light intensity attenuation is not very large, it is difficult to achieve mass production, and the film production process is complicated. , to achieve the effect of large working wavelength range, no transmission loss and low price

Inactive Publication Date: 2012-08-22
DALIAN ZHAOYANG SOFTWARE TECH
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AI Technical Summary

Problems solved by technology

The method of adjusting the position of the attenuating film to attenuate the laser light intensity has the following disadvantages:1. The production process of the film is complicated. In order to realize that the light intensity attenuation is different and changes continuously at different positions, the thickness of the film should also change continuously. This is difficult to control during the produ

Method used

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  • Novel small-sized mechanical variable laser attenuation device
  • Novel small-sized mechanical variable laser attenuation device
  • Novel small-sized mechanical variable laser attenuation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Taking the light intensity attenuator with optical fiber connector as an example, the optical input part is composed of optical fiber connector 14, optical fiber 15 and optical fiber self-focusing lens 16. The standard optical fiber connector 14 can be easily connected with the input light, such as a pigtailed fiber The output laser is connected in the form of optical fiber, and the self-focusing lens 16 keeps the light parallel, and the light is incident on the light intensity attenuation device 2 from the light input part 1 in a fixed direction.

[0024] The light intensity attenuation device 2 is composed of an isosceles trapezoidal prism 8, an upper dielectric film 7, and a lower dielectric film 9. The parameter design of the light intensity attenuation device 2 takes 1.3 um as the center wavelength. If other wavelengths are selected as the working wavelength, the parameter design needs to be redesigned. optimization. In the light intensity attenuation...

Embodiment 2

[0027]Embodiment 2: Taking a large-aperture laser light intensity attenuator as an example, the light input part 2 is composed of an incident window 23 , a collecting lens 24 and a plane mirror 25 . The collecting lens 24 keeps the light rays parallel. The plane mirror 25 changes the direction of light propagation, so that the reflected output light and input light are kept in a straight line.

[0028] The light intensity attenuation device 2 is composed of an isosceles trapezoidal prism 8, an upper dielectric film 7, and a lower dielectric film 9. The parameter design of the light intensity attenuation device 2 takes 1.3 μm as the center wavelength. If other wavelengths are selected as the working wavelength, the parameter design needs to be redesigned. optimization. In the light intensity attenuation device 2, the prism 8 selects a high refractive index isosceles trapezoidal prism (ZF7, n=1.750, base angle 38.45 0 ), the upper and lower bottom dielectric films 7 and 9 use ...

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Abstract

The invention discloses a novel small-sized mechanical variable laser attenuation device. The device mainly comprises a laser input part, a laser intensity attenuation appliance, a laser output part and a control part which are connected through a laser path, wherein the laser input part is arranged at the headmost end of the whole device, a laser ray after passing through the laser input part shines on the laser intensity attenuation appliance, the laser intensity attenuation appliance is arranged on an angle rotating component of the control part, the control part adjusts the incident angle of the laser ray on the laser intensity attenuation appliance, and after being attenuated on the laser intensity attenuation appliance, the laser ray is output by the laser output part. The device disclosed by the invention is applied to occasions such as laser communication and laser information processing and the like which are required to be subjected to laser intensity attenuation, and also can be applied to situations such as precise distance measurement and holographic information processing and the like which are required to be subjected to beam parameter control; and compared with the existing conventional techniques, the device has the advantages of simple process, low price, large extinction ratio, large operating wavelength range, small polarization sensitivity, less insertion loss and no transmission loss.

Description

technical field [0001] The invention relates to a laser light intensity attenuation device, in particular to a small mechanical variable laser light intensity attenuation device, which belongs to the field of laser devices. Background technique [0002] Due to the high intensity and power of the laser itself, in some applications, it often exceeds the ability of the subsequent device to withstand the light intensity. Therefore, if the light intensity is not properly attenuated, it will inevitably cause damage to the subsequent device. A light intensity attenuator is a device inserted into an optical circuit. Its purpose is to artificially controllably attenuate the light intensity so that the output light meets the requirements in terms of intensity or power. After literature search, it is found that the U.S. patent application number is: 6130984, the application date is: 2000.10.10, and the invention name is: small adjustable light intensity attenuator. This patent introduc...

Claims

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Application Information

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IPC IPC(8): G02B6/26G02B5/04G02B1/10
Inventor 栾晓健
Owner DALIAN ZHAOYANG SOFTWARE TECH
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