scholarly journals Magnetorheological finishing for imprinting continuous-phase plate structures onto optical surfaces

2004 ◽  
Author(s):  
Joseph A. Menapace ◽  
Sham N. Dixit ◽  
Francois Y. Genin ◽  
Wayne F. Brocious
Keyword(s):  
Continuous Phase ◽  
Phase Plate ◽  
Magnetorheological Finishing ◽  
Plate Structures ◽  
Optical Surfaces

The Computer-Controlled Chemical Polishing Techniques for Precision Optics

2009 ◽  
Vol 76-78 ◽  
pp. 217-222
Author(s):  
Qiao Xu ◽  
Jian Wang ◽  
Jing Hou
Keyword(s):  
Marangoni Effect ◽  
Continuous Phase ◽  
Fused Silica ◽  
Chemical Polishing ◽  
Phase Plate ◽  
Complex Phase ◽  
Etching Depth ◽  
Optical Surfaces ◽  
Good Repeatability ◽  
Computer Controlled

The computer-controlled chemical polishing (CCCP) techniques based on the Marangoni effect have been developed to manufacture precision optics on polished fused silica surface. In this study, we present the Marangoni confined chemical-etching process in which the material removal on optical surfaces can be accomplished by etching with buffered HF solution. The process shows stable characteristics and good repeatability while the etching depth can be controlled in the order of ten nanometers. We also present the experimental results of this technology for fabrication of phase corrector and continuous phase plate. Results show that the CCCP’s deterministic sub-aperture-polishing characteristics make it possible to correct the surface error and imprint complex phase structure with spatial scale-length of several millimeters onto optical surface.

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
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