A Full Aperture Backscattering Light Diagnostic System Installed on the Shenguang-III Prototype Laser Facility

XU Tao(徐涛); MEI Yu(梅雨); WEI Huiyue(魏惠月); PENG Xiaoshi(彭晓世); WANG Feng(王峰); YANG Dong( 杨冬); LIU Shenye(刘慎业); YAN Yadong(闫亚东)

doi:10.1088/1009-0630/16/6/05

Plasma Science and Technology > 2014 > 16(6): 567-570. > DOI: 10.1088/1009-0630/16/6/05

XU Tao(徐涛), MEI Yu(梅雨), WEI Huiyue(魏惠月), PENG Xiaoshi(彭晓世), WANG Feng(王峰), YANG Dong( 杨冬), LIU Shenye(刘慎业), YAN Yadong(闫亚东). A Full Aperture Backscattering Light Diagnostic System Installed on the Shenguang-III Prototype Laser Facility[J]. Plasma Science and Technology, 2014, 16(6): 567-570. DOI: 10.1088/1009-0630/16/6/05

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A Full Aperture Backscattering Light Diagnostic System Installed on the Shenguang-III Prototype Laser Facility

1 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China 2 Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 721000, China

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Received Date: April 15, 2013

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Abstract

A full aperture backscattering light diagnostic system (FABLDS) implemented on the Shen Guang-III Prototype Laser Facility is described in the paper. FABLDS measures both stimulated brillouin scattering (SBS) and stimulated Raman scattering (SRS) with a series of optical detectors. Energy sensors record the integrated energy, and streak cameras coupled with spectrometers measure the temporal spectrum of the backscattering light. This paper provides an overview of the FABLDS and detailed descriptions of the optical path. Special components, including off-axis parabolic mirror, spatial filter and optical light filters, are incorporated along the beam path for purifying the scattering light. Several hohlraum targets were employed, in- cluding C 5 H 12 gas-filled targets and empty targets in the experiments. Results presented in the paper indicate that the fraction of backscatter light has been obviously shrinked when the laser is smoothed by continuous phase plates (CPP).
- backscattering light,
- ICF,
- off-axis parabolic mirror,
- hohlraum targets,
- CPP

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References

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A Full Aperture Backscattering Light Diagnostic System Installed on the Shenguang-III Prototype Laser Facility