Near-backscattering optical measurement system
An optical measurement system and backscattering technology, applied in the field of optical measurement, can solve problems such as difficulty in meeting large-scale laser drive devices and low damage threshold, and achieve continuous energy attenuation, high damage threshold, and energy attenuation effects
Pending Publication Date: 2018-07-27
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0008] The purpose of the present invention is to provide a near backscattering optical measurement system, which solves the technical problem that the existing backscattering diagnostic technology is difficult to meet the measurement requirements of near backscattering light of large-scale laser drive devices due to the low damage threshold
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[0032] This embodiment is a near backscattering optical measurement system, the structure of which includes a sampling device and a measuring device.
[0033] see figure 1 , the sampling device includes a spherical vacuum target chamber 1 and a system imaging lens 8. The spherical vacuum target chamber 1 is provided with a target point 3 and a scattering plate 5; After scattering, diffuse reflection is generated by the scattering plate 5, and the diffuse reflection light 6 passes through the measurement window 7 on the spherical vacuum target chamber, and then enters the measurement device through the system imaging lens 8. A measurement system variable total aperture 9 is arranged between the system imaging lens 8 and the measurement window 7 of the spherical vacuum target chamber 1 for controlling the total light flux. The scattering plate 5 is a special-shaped scattering plate with a targeting laser channel. Preferably, in this embodiment, the special-shaped scattering pl...
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The invention specifically relates to a near-backscattering optical measurement system, belonging to the field of optical measurement technology. The near-backscattering optical measurement system comprises a sampling device and a measuring device. The system is characterized in that the sampling device comprises a spherical vacuum target chamber and a system imaging lens, wherein the spherical vacuum target chamber is internally provided with a target and a scattering plate; and near-backscattered light generated after target shooting laser is incident into the target is scattered in the opposite direction of a target shooting direction and is then diffused by the scattering plate, and diffuse reflection light passes through a measurement window on the spherical vacuum target chamber andthen enters the measuring device via the system imaging lens. The near-backscattering optical measurement system of the invention solves the technical problem that conventional backscattering diagnostic technology has difficulty in satisfying the large-scale near-backscattered light measurement requirements of laser-driven devices due to low damage thresholds.
Description
technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a near backscattering optical measurement system. Background technique [0002] Laser nuclear fusion is a kind of artificial controllable nuclear fusion widely used at present. It has very important research significance in both civilian and military fields: it is to explore an inexhaustible clean nuclear energy for human beings; it is used to develop "clean" (No radioactive pollution) nuclear weapons, development of high-energy laser weapons; partial replacement of nuclear experiments. [0003] Therefore, laser nuclear fusion has been highly valued by the world's nuclear powers. Since the second half of the 1970s, Russia, the United States, Japan, France, China, Britain and other countries have successively started the development of high-power laser drivers. The United States is in a leading position in research in this field, and in 2009 it officially ...
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Login to View More IPC IPC(8): G01N21/47
CPCG01N21/47
Inventor 闫亚东何俊华王维韦明智薛艳博张敏
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI