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Ultrafast laser fixed point irradiation device

An irradiation device and laser technology, applied in measuring devices, material analysis through optical means, instruments, etc., can solve the problems that the direction of the laser cannot be changed arbitrarily, and the optical path of the laser pulse is easy to change.

Active Publication Date: 2018-03-13
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a variable-direction ultrafast laser fixed-point irradiation device that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems. Defects prone to change

Method used

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  • Ultrafast laser fixed point irradiation device
  • Ultrafast laser fixed point irradiation device
  • Ultrafast laser fixed point irradiation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this embodiment, specifically, the sub-reflector group includes a fifth reflector 105, a sixth reflector 106, and a seventh reflector 107, and the fifth reflector 105 is arranged on the reflection optical path of the fourth reflector 104 , the sixth reflector 106 is arranged on the reflected light path of the fifth reflector 105, the seventh reflector 107 is arranged on the reflected light path of the sixth reflector 106, and the concave reflector 108 is arranged at the reflective direction of the seventh reflector 107 .

[0024] In this embodiment, the third reflector 103, the fourth reflector 104, the fifth reflector 105, the sixth reflector 106, and the seventh reflector 107 are all plane reflectors. Specifically, the above-mentioned fourth reflector Mirror 104 is a wide-angle total reflection mirror, and the fifth reflection mirror 105, the sixth reflection mirror 106, and the seventh reflection mirror 107 are all 45° total reflection mirrors; in specific arrange...

Embodiment 2

[0042] In this embodiment, improvements are made according to Embodiment 1, the fifth reflector 105 and the sixth reflector 106 in Embodiment 1 are removed, and the seventh reflector 107 and the concave reflector 108 are centered along the rotation axis Rotate 180 °, the relative position of the seventh reflector 107 and concave reflector 108 is unchanged, move to the other side of the response parallel of the square, and close to the fourth reflector 104, at this moment, then do not need the fifth reflector 105 , The reflection effect of the sixth reflector 106 may be to directly transmit the reflected light to the concave reflector 108 through the seventh reflector 107 . Other features in this embodiment are the same as those in Embodiment 1, so details are not repeated here.

Embodiment 3

[0044] This embodiment is another solution of Embodiment 1. Only the sixth reflector 106 is removed, and the seventh reflector 107 and the concave reflector 108 in Embodiment 1 are rotated 90° counterclockwise along the rotation axis as the center rotation axis, that is, the sixth reflector 106 The seven mirrors 107 are moved to the corresponding squares close to the fifth mirror 105, and the relative positions of the seventh mirror 107 and the concave mirror 108 remain unchanged. Other features in this embodiment are the same as those in Embodiment 1, so details are not repeated here.

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Abstract

The invention provides an ultrafast laser fixed point irradiation device. The ultrafast laser fixed point irradiation device comprises an ultrafast laser, a third reflector and a turntable. The thirdreflector is arranged on a laser light path of the ultrafast laser. The turntable can rotate along a rotation shaft. The turntable is fixedly provided with a reflector set and a concave reflector. A distance between the center of the concave reflector and the rotation shaft is half of the radius of curvature of the concave reflector. The reflector set is used for transmitting laser reflected by the third reflector to the concave reflector. The reflected laser beam transmitted by the reflector set to the concave reflector is a paraxial beam parallel to the optical axis of the concave reflector.The reflected laser transmitted by the reflector set is reflected by the concave reflector and then is gathered to the rotation shaft. The plane reflector set and the concave reflector are fixed to the turntable according to a rule. In rotation of the turntable, as long as the laser incident angle to the turntable is not changed, the laser irradiation point position after the plane reflector setand the concave reflector action is not changed and the laser direction can be changed.

Description

technical field [0001] The present invention relates to the field of ultrafast laser technology, and more specifically, to an ultrafast laser fixed-point irradiation device. Background technique [0002] In the field of scientific research, laser is a very important excitation light source. By gradually changing the direction of laser irradiation or excitation of samples, the key feature information or maps reflecting the changes in the properties of sample materials can be detected and obtained, which has become a new scientific phenomenon. important method. Especially in the study of ultrafast time resolution, the precise time delay synchronization control between different pulses is also crucial. [0003] Due to its extremely short pulse width and high peak power, ultrafast pulsed laser has important applications in scientific research and industry. In the field of micromachining, when the ultrafast laser interacts with matter, its action time is extremely short, the th...

Claims

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Application Information

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IPC IPC(8): G01N21/01
CPCG01N21/01
Inventor 樊仲维张鸿博赵水连富强白振岙康治军麻永俊许东晖马有瑄
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI