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Laser pulse characteristic measuring device and method based on fluorescence modulation sampling

A laser pulse and measurement device technology, applied in the direction of laser monitoring devices, lasers, laser components, etc., can solve the problems of increased operational difficulty and limited wavelength bandwidth of nonlinear crystals, and achieve wide detection wavelength, simple operation, and measurement high precision effect

Pending Publication Date: 2022-04-15
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to solve the limitation of the existing laser pulse characteristic measurement by the phase matching mechanism, so that the wavelength bandwidth that the nonlinear crystal can respond to is limited; at the same time, for the measurement of laser pulses of different wavelengths, it is necessary to replace a specially designed nonlinear crystal, To solve the technical problem of increasing the difficulty of operation, a device and method for measuring laser pulse characteristics based on fluorescence modulation sampling are provided

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  • Laser pulse characteristic measuring device and method based on fluorescence modulation sampling
  • Laser pulse characteristic measuring device and method based on fluorescence modulation sampling
  • Laser pulse characteristic measuring device and method based on fluorescence modulation sampling

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[0051] The present invention will be described in detail below through the accompanying drawings and examples.

[0052] like figure 1 As shown, the present invention is a laser pulse characteristic measurement device based on fluorescence modulation sampling, including a laser 1, a first beam splitter 2, a second beam splitter 5, a third beam splitter 3, a first mirror 6, a first beam splitter Two reflecting mirrors 4, delay line 9, wedge pair 10, concave silver mirror 11, fluorescent crystal 12, focusing mirror 13 and CCD14. The fluorescent crystal 12 is one of zinc oxide, diamond, fused silica, magnesium oxide, and single crystal silicon, and other crystals capable of generating fluorescence can also be used, and the fluorescent wavelengths of different materials are different. In this embodiment, the fluorescent crystal is zinc oxide with a thickness of 200 μm, and the generated fluorescence is 390 nm. In this embodiment, the first beam splitter 2, the second beam splitte...

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Abstract

The invention relates to a laser pulse testing technology, in particular to a laser pulse characteristic measuring device and method based on fluorescence modulation sampling. The technical problems that in existing laser pulse characteristic measurement, the wavelength bandwidth is limited, and different nonlinear crystals are needed for measurement of laser pulses with different wavelengths are solved. According to the device, a laser device generates laser, the laser is divided into transmission light and reference light through a first beam splitting piece, the reference light sequentially passes through a third beam splitting piece and a second reflecting mirror, then enters a concave silver mirror and is focused to a fluorescent crystal to generate fluorescent light, and the fluorescent light is imaged on a camera through a focusing mirror; the transmission light beam is divided into fundamental frequency light and signal light through the second beam splitting piece, the fundamental frequency light passing through the first reflecting mirror and the signal light passing through the delay line are combined through the wedge pair, then enter the concave silver mirror and are focused to the fluorescent crystal to generate fluorescent light, and finally the fluorescent light is imaged on the camera through the focusing mirror. The invention further provides a laser pulse characteristic measuring method based on fluorescence modulation sampling.

Description

technical field [0001] The invention relates to laser pulse testing technology, in particular to a laser pulse characteristic measuring device and method based on fluorescence modulation sampling. Background technique [0002] With the development of laser technology, femtosecond laser has been widely used in biomedicine, ultra-precision processing, information science and other fields. As a more accurate, accurate and faster tool, it provides a new technical means for the above fields to solve Some inherent problems have been solved, and it has become an important direction for interdisciplinary integration. At present, ultrafast femtosecond lasers are very mature, and their wavelengths can cover from ultraviolet to mid-infrared. However, how to perform comprehensive diagnosis of femtosecond laser pulses in different wavelength bands is still a very challenging and important research content. [0003] The pulse characteristics of a laser usually include information such as...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08H01S3/00H01S3/081
CPCH01S3/0014H01S3/081H01S3/08059
Inventor 黄沛曹华保付玉喜袁浩王向林王虎山刘柯阳林华王屹山赵卫
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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