Slab laser beam expanding alignment system capable of adjusting in electric closed loop mode

A laser beam expansion and closed-loop technology, applied in the field of laser collimation beam expansion optical systems, can solve the problems of manual adjustment of the safety of operators, inability to take into account the collimation of the slat divergence angle, and inability to adjust in real time. Good effect, good collimation effect, high adjustment precision effect

Active Publication Date: 2015-02-04
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system structure of this scheme is simple, but it cannot take into account the divergence angle collimation in both the width and thickness directions of the slab laser at the same time
2) Cylindrical lens beam expander collimation system: composed of two cylindrical lenses and two ball lenses, it pre-compensates the divergence angle specific to the width and thickness direction of the s

Method used

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  • Slab laser beam expanding alignment system capable of adjusting in electric closed loop mode
  • Slab laser beam expanding alignment system capable of adjusting in electric closed loop mode
  • Slab laser beam expanding alignment system capable of adjusting in electric closed loop mode

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Embodiment 1

[0021] Such as figure 1 , the present invention includes a slab laser, a first cylindrical lens, a second cylindrical lens, a first ball lens, a second ball lens, a computer, a stepper motor and a far-field detection system; the first cylindrical lens and the second cylindrical lens are mutually Orthogonal placement; the first cylindrical lens and the second cylindrical lens are respectively connected to the stepping motor; the computer is respectively connected to the stepping motor and the far-field detection system; the laser beam emitted by the slab laser passes through the first cylindrical lens, the second The cylindrical lens, the first ball lens and the second ball lens are injected into the far-field detection system; the computer receives the feedback signal of the far-field detection system and controls the operation of the stepping motor according to the feedback signal to control the movement of the first cylindrical lens and the second cylindrical lens. Location...

Embodiment 2

[0031] The basic structure of this embodiment is the same as that of Embodiment 1, and the difference is that the focusing lens 6 is changed into a long focal length achromatic focusing lens group, such as image 3 As shown, it consists of a meniscus spherical lens, a plano-concave lens and a doublet lens group containing two spherical lenses.

[0032] The meniscus spherical lens 11 has a clear aperture of Φ50mm and a focal length of 290mm. The material is H-ZF7LA. The surface is coated with an anti-glare anti-reflection film, and the transmittance is greater than 99.8%.

[0033] The meniscus spherical lens 12 has a clear aperture of Φ50mm and a focal length of 186mm. The material is H-ZF7LA. The surface is coated with an anti-glare anti-reflection film, and the transmittance is greater than 99.8%.

[0034] Plano-concave lens, the clear aperture is Φ50mm, the focal length is -116mm, the material is H-ZF7LA, the surface is coated with anti-glare antireflection film, and the tra...

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Abstract

The invention provides a slab laser beam expanding alignment system capable of adjusting in an electric closed loop mode. The slab laser beam expanding alignment system capable of adjusting in the electric closed loop mode comprises a slab laser device, a first cylindrical lens, a second cylindrical lens a first spherical lens, a second spherical lends, a computer, a stepping motor and a distant field detection system, wherein the first cylindrical lens and the second cylindrical lens are arranged in orthogonal mode, the first cylindrical lens and the cylindrical lens are respectively connected with the stepping motor, the computer is connected with the stepping motor and the distant field detection system, a laser beam transmitted by the slab laser device sequentially passes through the first cylindrical lens, the second cylindrical lens, the first spherical lens and the second spherical lends, and then is shot into the distant field detection system, and the computer receives a feedback signal of the distant field detection system, controls running of the stepping motor according to the feedback signal, and thereby controls positions of the first cylindrical lens and the second cylindrical lends. The slab laser beam expanding alignment system capable of adjusting in the electric closed loop mode can guarantee that slab laser has good alignment effects under different work states, and is high in adjustment accuracy, good in alignment effect, and safe and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of shaping, coupling and transformation of laser beams, and in particular relates to an electric closed-loop adjusted laser collimation and beam expansion optical system, which is used for the size scaling and real-time automatic adjustment of the divergence angle of the output beam of a solid slab laser. Background technique [0002] In solid slab lasers, the asymmetric geometric structure of the gain medium and the zigzag optical path can effectively compensate thermal optical effects such as thermal lens and thermally induced birefringence, making it easier to obtain a better beam under high-power laser output conditions quality. However, since the dimension in the width direction of the slab gain medium is much larger than the dimension in the thickness direction, the temperature gradients in the width direction and thickness direction inside the gain medium are quite different under the condition of hig...

Claims

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Application Information

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IPC IPC(8): G02B7/02G02B27/09G02B27/30
CPCG02B7/021G02B27/09G02B27/30
Inventor 范国滨张卫田飞叶一东廖原颜宏陈黎罗佳李建民卢飞
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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