Measurement device, with step-shaped cone, absorbing all energy of high-energy laser

A high-energy laser and energy measurement technology, applied in measurement devices, optical radiation measurement, photometry, etc., can solve the problems of low laser damage threshold and low temperature measurement accuracy, and achieve the effect of reducing power density and increasing heat dissipation area.

Active Publication Date: 2013-12-25
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0003] In order to overcome the influence caused by the low anti-laser damage threshold and temperature measurement accuracy, heat loss and li

Method used

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  • Measurement device, with step-shaped cone, absorbing all energy of high-energy laser
  • Measurement device, with step-shaped cone, absorbing all energy of high-energy laser
  • Measurement device, with step-shaped cone, absorbing all energy of high-energy laser

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[0030] The present invention will be further described below in conjunction with the drawings and embodiments.

[0031] figure 1 It is a schematic diagram of the structure of a step cone high-energy laser total absorption energy measurement device, where the thin arrow marks the propagation direction of the laser, and the thick arrow marks the water flow direction. figure 1 The middle laser enters the absorption cavity 5 from the energy meter entrance 1 and is incident on the reflector 3. The stepped reflection cone 9 is sandblasted and gold-plated to form a diffuse reflection surface. The laser is diffusely reflected to the entire absorption cavity 5 by the reflector 3. The absorber 2 and the heat insulator 4 form a closed absorption cavity 5, and the laser is fully absorbed by the absorption cavity 5. A submersible pump is arranged at the bottom of the water tank in the water circulation component 7 to pump water into the pipeline. After the water in the pipeline flows through t...

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Abstract

The invention provides a measurement device, with a step-shaped cone, absorbing all energy of a high-energy laser. Light enters an absorbing cavity from the entrance of an energy meter, arrives in a reflection body in an incident mode and can be absorbed by the absorbing cavity after being reflected by the reflection body, and temperature rise of each region of an absorbing body is measured by a temperature measurement component and is combined with quality and specific heat of combustion to work out the energy increment of each region. Water channels are formed in the wall of the reflection body and the wall of the absorbing body respectively, and water is filled into the water channels to bring away most heat. Laser energy brought away by the water can be indirectly worked out through a water circulation component according to temperature changes and flow during the period from the time when the water enters the absorbing body and the reflection body to the time after the water departs from the absorbing body and the reflection body. The total energy of increment lasers can be worked out by a data collecting component according to energy measured by the temperature measurement component and energy measured by the water circulation component. Because the step-shaped emitting cone serves as the reflection body, the absorbing body is of a cylindrical structure, the effect caused by low laser induced damage thresholds, temperature measurement accuracy, heat loss and light energy escaping in the prior art is avoided, and the measurement device has the advantages of being high in efficiency ratio and testing efficiency and the like.

Description

technical field [0001] The invention belongs to the field of high-energy laser energy measurement, and in particular relates to a stepped cone high-energy laser total absorption energy measurement device, which is suitable for high-energy laser energy measurement. Background technique [0002] There are two main methods for high-energy laser energy measurement: the first is indirect measurement, which uses a spectroscope to split the sample, then uses a low- and mid-range power energy measurement device to measure the sampled laser energy, and finally according to the low- and mid-range power energy measurement device. The measurement results and the splitting ratio of the beam splitter are used to calculate the total laser energy; the second is the direct measurement method, that is, the energy measurement device is used to measure the total laser energy, which requires the measurement device to absorb almost all the laser energy. This type of device is usually called It is...

Claims

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Application Information

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IPC IPC(8): G01J1/42G01J1/04
Inventor 范国滨张卫蒋志雄胡晓阳魏继锋张凯常艳高学燕周山周文超黄德权沙子杰
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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