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Transverse excitation CO2 laser narrow pulse generating device based on plasma switch

A plasma and generating device technology, applied in the laser field, can solve problems such as low efficiency and complex structure, and achieve the effect of reducing power density, easy implementation, and meeting application requirements

Inactive Publication Date: 2018-06-12
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To sum up, it can be seen that the current plasma switch can only be formed under specific conditions, the efficiency is low, a special gas pool and additional auxiliary devices are required, and the structure is relatively complicated.

Method used

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  • Transverse excitation CO2 laser narrow pulse generating device based on plasma switch
  • Transverse excitation CO2 laser narrow pulse generating device based on plasma switch
  • Transverse excitation CO2 laser narrow pulse generating device based on plasma switch

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0033] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0034] The present disclosure provides a TE CO based on a small hole plasma switch 2 Laser narrow pulse generating device, including:

[0035] f...

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Abstract

The invention provides a transverse excitation CO2 laser narrow pulse generating device based on a plasma switch, which comprises a focusing lens; a plasma switch, which is composed of a solid material and positioned at the focal point of the focusing lens, the focusing lens is provided with a hole. The TECO2 laser is focused on the hole of the plasma switch through the focusing lens to form a plasma. The tail part of the TECO2 laser is absorbed by the plasma, so as to generate laser narrow pulses. And a collimating lens arranged coaxially with the focusing lens for outputting the laser narrowpulse. The invention discloses a TECO2 laser narrow pulse generating device based on a plasma switch, which effectively cuts off a TECO2 laser pulse low-power long trailing part, achieves the aim ofcompressing the laser pulse width, has simple structure and convenient operation.

Description

technical field [0001] The present disclosure relates to the field of laser technology, in particular to a plasma switch-based lateral excitation CO 2 Laser narrow pulse generating device. Background technique [0002] High power high repetition rate Transversely Excited (TE) CO 2 Lasers are widely used in laser processing and military. TE CO 2 The laser usually consists of a high-power narrow pulse (100ns) and a low-power long tail (3-5μs). In some applications that require high-power narrow-pulse lasers, typical TE CO 2 The low-power long tail portion of the laser pulse can adversely affect the application and must be removed. For example, in the application of lidar, the long trailing part will reduce the resolution; in the application of frequency doubling process, the long trailing part will affect the conversion efficiency of frequency doubling, and even damage the crystal; in the application of extreme ultraviolet laser plasma light source, low The long tail of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/00H01S3/0971
CPCH01S3/0057H01S3/0971
Inventor 柯常军吴天昊孔心怡
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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