scholarly journals The special shaped laser spot for driving indirect-drive hohlraum with multi-beam incidence

2017 ◽  
Vol 5 ◽  
Author(s):  
Ping Li ◽  
Sai Jin ◽  
Runchang Zhao ◽  
Wei Wang ◽  
Fuquan Li ◽  
...  
Keyword(s):  
Control Level ◽  
Continuous Phase ◽  
Laser Spot ◽  
Phase Plate ◽  
Single Beam ◽  
Laser Propagation ◽  
Beam Incidence ◽  
Indirect Drive ◽  
Laser Focal Spot ◽  
Phase Aberrations

In indirect drive, reducing peak intensity of a single beam and controlling overlap of multi-beams are two opposite requirements for laser focal spot design. In this paper, an improved laser spot design technique for indirect drive built upon the geometric structures of laser propagation into hohlraum has been introduced. The proposed technique is able to generate appropriate continuous phase plate (CPP) producing a special shaped spot that can balance the opposite requirements. The corresponding CPP does not bring difficulties to the design and fabrication. Phase aberrations are more sensitive to the special shaped spot; however, it can be tolerable for the current beam control level.

scholarly journals High-Accuracy Surface Topography Manufacturing for Continuous Phase Plates Using an Atmospheric Pressure Plasma Jet

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 683
Author(s):  
Huiliang Jin ◽  
Caixue Tang ◽  
Haibo Li ◽  
Yuanhang Zhang ◽  
Yaguo Li
Keyword(s):  
Surface Topography ◽  
Atmospheric Pressure ◽  
High Efficiency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Continuous Phase ◽  
High Accuracy ◽  
Phase Plate ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma

The continuous phase plate (CPP) is the vital diffractive optical element involved in laser beam shaping and smoothing in high-power laser systems. The high gradients, small spatial periods, and complex features make it difficult to achieve high accuracy when manufacturing such systems. A high-accuracy and high-efficiency surface topography manufacturing method for CPP is presented in this paper. The atmospheric pressure plasma jet (APPJ) system is presented and the removal characteristics are studied to obtain the optimal processing parameters. An optimized iterative algorithm based on the dwell point matrix and a fast Fourier transform (FFT) is proposed to improve the accuracy and efficiency in the dwell time calculation process. A 120 mm × 120 mm CPP surface topography with a 1326.2 nm peak-to-valley (PV) value is fabricated with four iteration steps after approximately 1.6 h of plasma processing. The residual figure error between the prescribed surface topography and plasma-processed surface topography is 28.08 nm root mean square (RMS). The far-field distribution characteristic of the plasma-fabricated surface is analyzed, for which the energy radius deviation is 11 μm at 90% encircled energy. The experimental results demonstrates the potential of the APPJ approach for the manufacturing of complex surface topographies.

scholarly journals Study on the frontal condition for continuous phase plate in inertial confinement fusion driver

2009 ◽  
Vol 58 (5) ◽  
pp. 3130
Author(s):  
Yao Xin ◽  
Gao Fu-Hua ◽  
Zhang Yi-Xiao ◽  
Wen Sheng-Lin ◽  
Guo Yong-Kang ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Continuous Phase ◽  
Phase Plate ◽  
Inertial Confinement ◽  
Confinement Fusion

Wavefront Testing of Large-Aperture Continuous Phase Plate

2010 ◽  
Vol 37 (3) ◽  
pp. 809-814
Author(s):  
柴立群 Chai Liqun ◽  
于瀛洁 Yu Yingjie ◽  
石琦凯 Shi Qikai ◽  
许乔 Xu Qiao ◽  
温圣林 Wen Shenglin ◽  
...  
Keyword(s):  
Continuous Phase ◽  
Phase Plate ◽  
Large Aperture

Choice of phase filter in designing continuous phase plate with GS algorithm

2010 ◽  
Vol 22 (11) ◽  
pp. 2634-2638
Author(s):  
林中校 Lin Zhongxiao ◽  
张蓉竹 Zhang Rongzhu ◽  
杨春林 Yang Chunlin ◽  
许乔 Xu Qiao
Keyword(s):  
Continuous Phase ◽  
Phase Plate ◽  
Phase Filter

Error in stitching testing for large aperture continuous phase plate

2013 ◽  
Vol 25 (12) ◽  
pp. 3329-3332
Author(s):  
颜浩 Yan Hao ◽  
杨春林 Yang Chunlin ◽  
石琦凯 Shi Qikai ◽  
温圣林 Wen Shenglin ◽  
嵇保健 Ji Baojian
Keyword(s):  
Continuous Phase ◽  
Phase Plate ◽  
Large Aperture

Influence of surface characteristics of continuous phase plate on far field distribution

2014 ◽  
Vol 26 (10) ◽  
pp. 102003
Author(s):  
肖谦裔 Xiao Qianyi ◽  
吕晨 Lü Chen ◽  
张蓉竹 Zhang Rongzhu
Keyword(s):  
Field Distribution ◽  
Surface Characteristics ◽  
Continuous Phase ◽  
Phase Plate ◽  
Far Field

A method for abstracting edge profile of continuous phase plate focus spot

2013 ◽  
Vol 25 (12) ◽  
pp. 3205-3209
Author(s):  
李强 Li Qiang ◽  
徐凯源 Xu Kaiyuan ◽  
刘昂 Liu Ang ◽  
何宇航 He Yuhang ◽  
高波 Gao Bo
Keyword(s):  
Continuous Phase ◽  
Phase Plate ◽  
Edge Profile ◽  
Focus Spot

Performance of target irradiation in a high-power laser with a continuous phase plate and spectral dispersion

2013 ◽  
Vol 30 (11) ◽  
pp. 2162 ◽  
Author(s):  
Xiujuan Jiang ◽  
Jinghui Li ◽  
Rong Wu ◽  
Zhengtao Zhu ◽  
Shenlei Zhou ◽  
...  
Keyword(s):  
High Power ◽  
Continuous Phase ◽  
Phase Plate ◽  
High Power Laser ◽  
Power Laser ◽  
Spectral Dispersion

scholarly journals Design and optical characterization of a large continuous phase plate for Laser Integration Line and laser Megajoule facilities

2003 ◽  
Vol 42 (13) ◽  
pp. 2377 ◽  
Author(s):  
Jérôme Néauport ◽  
Xavier Ribeyre ◽  
Jérôme Daurios ◽  
Denis Valla ◽  
Martine Lavergne ◽  
...  
Keyword(s):  
Optical Characterization ◽  
Continuous Phase ◽  
Phase Plate
Sign in / Sign up

Export Citation Format

Share Document