Research on Laser Polishing of Optical Glass

2010 ◽  
Vol 154-155 ◽  
pp. 1209-1212
Author(s):  
Gui Wen Kang
Keyword(s):  
Surface Integrity ◽  
Glass Ceramic ◽  
Glass Surface ◽  
Optical Glass ◽  
Subsurface Damage ◽  
Future Application ◽  
Enabling Technology ◽  
Laser Polishing

With the development of photoelectron technology, optical glass and glass ceramic has been used in many different fields. The final machining of this kind of material has very important effect to its future application. In the present study, optical glass and glass ceramic is finished using laser polishing. Laser polishing could eliminate subsurface damage, smooth micro roughness. In certain cases a preheating system should be needed to increase optical glass’ surface integrity. The result shows that laser polishing of optical glass and glass ceramic has higher efficiency compared to conventional optical machining. The flexibility of laser polishing makes it ideal as an enabling technology for the final manufacturing of optical glass and glass ceramic.

Evaluation of grinding-induced subsurface damage in optical glass BK7

2016 ◽  
Vol 229 ◽  
pp. 785-794 ◽  
Author(s):  
Hao Nan Li ◽  
Tian Biao Yu ◽  
Li Da Zhu ◽  
Wan Shan Wang
Keyword(s):  
Optical Glass ◽  
Subsurface Damage

scholarly journals Effect of Stress Wave between Adjacent Asperities Interaction on Subsurface Damage of Optical Glass in Precision Grinding

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1239
Author(s):  
Chen ◽  
Ren ◽  
Lin
Keyword(s):  
Finite Element ◽  
Optical Glass ◽  
Diamond Particle ◽  
Subsurface Damage ◽  
Propagation Mechanism ◽  
Analysis Model ◽  
Precision Grinding ◽  
Element Analysis ◽  
Analysis Process ◽  
Element Simulation

The interaction between adjacent asperities is a typical characteristic of the grinding process and plays an important role in the material removal mechanism. Therefore, in order to systematically investigate the formation mechanism of the subsurface damage, a precision grinding contact model between the diamond particle and optical glass with adjacent asperities is proposed in our research. The initiation and propagation mechanism of median/lateral cracks under residual stress, the propagation rules of the stress waves on the subsurface, and the interaction between the subsurface damage under stress superposition effect are fully investigated by a theoretical analysis and finite element simulation. The simulation results of the precision grinding model are verified by experiments, which show that the proposed numerical analysis model is reasonable and the finite element analysis process is feasible.

Blind evaluation of AFM tip shape by using optical glass surface with irregular nanostructures as a tip characteriser

2017 ◽  
Vol 12 (12) ◽  
pp. 916-919
Author(s):  
Guoqiang Han ◽  
Shuguang Cao ◽  
Xiumei Wang ◽  
Bo Lin ◽  
Yuqin Chen
Keyword(s):  
Glass Surface ◽  
Optical Glass

Chemical attack of optical glass surface by formic acid vapor

1975 ◽  
Vol 19 ◽  
pp. 221-239 ◽  
Author(s):  
Shoji Tsuchihashi ◽  
Akio Konishi ◽  
Yoji Kawamoto
Keyword(s):  
Formic Acid ◽  
Glass Surface ◽  
Optical Glass ◽  
Acid Vapor ◽  
Chemical Attack

Excitation of electron emission from optical glass surface with waveguide radiation

1994 ◽  
Author(s):  
A. F. Zatsepin ◽  
V. S. Kortov ◽  
N. V. Nokonorov ◽  
V. V. Tyukov
Keyword(s):  
Electron Emission ◽  
Glass Surface ◽  
Optical Glass

Polished BK10 Optical-Glass Surface Protection from the Ambient Environment

2017 ◽  
Vol 74 (1-2) ◽  
pp. 37-39 ◽  
Author(s):  
D. Yu. Kruchinin ◽  
O. L. Paramonova
Keyword(s):  
Glass Surface ◽  
Optical Glass ◽  
Surface Protection ◽  
Ambient Environment

scholarly journals Factor Analysis of Machining Parameters On Surface Integrity of CFRP Composites Based On A Microscopic Finite Element Cutting Model

2021 ◽  
Author(s):  
Jianzhang Xiao ◽  
Guifeng Wang ◽  
Hang Su ◽  
Pengcheng Huang ◽  
Zhongzhe Chen
Keyword(s):  
Surface Roughness ◽  
Factor Analysis ◽  
Surface Integrity ◽  
Fiber Orientation ◽  
Subsurface Damage ◽  
Machining Parameters ◽  
Factors Affecting ◽  
Cfrp Composites ◽  
Damage Depth ◽  
Cutting Model

Abstract In the paper, a three-dimensional (3D) micromechanical finite element (FE) cutting model with three phases was developed to study the surface integrity of CFRP composites. The surface roughness and the depth of subsurface damage were predicted by using the FE cutting model, which were used to characterize the surface integrity. The machined surface observations and surface roughness measurements of CFRP composites at different fiber orientations were also performed for model validation. It is indicated that the 3D micromechanical model is capable of precisely predicting the surface integrity of CFRP composites. To investigate the complex coupling influences of multiple machining parameters on the surface integrity, the factor analysis of multiple machining parameters was performed, and then the effects of these machining parameters on the surface roughness and subsurface damage depth were obtained quantitatively. It was found that the fiber orientation angle and cutting speed are the most significant factors affecting the surface roughness, and the fiber orientation and edge radius are the main factors affecting the subsurface damage depth. The results also reveal that coupling effects of depth of cut and edge radius should be considered for improving the surface integrity of CFRP composites.

scholarly journals Thin Films and Glass–Ceramic Composites of Huntite Borates Family: A Brief Review

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 487
Author(s):  
Elena A. Volkova ◽  
Daniil A. Naprasnikov ◽  
Nikolay I. Leonyuk
Keyword(s):  
Rare Earth ◽  
Glass Ceramic ◽  
Optical Waveguides ◽  
Optical Glass ◽  
Ceramic Materials ◽  
Ceramic Composites ◽  
Epitaxial Layers ◽  
Waveguide Lasers ◽  
Laser Systems ◽  
Physical And Chemical

Rare-earth aluminum borates, RAl3(BO3)4 (where R = Y, Pr–Lu), are of great interest because of their attractive multifunctional properties, depending on their structure and composition. The combination of desirable physical and chemical characteristics makes them promising materials for lasers and nonlinear optics. Research focusing on RAl3(BO3)4 (RAB) compounds and their solids solutions has continued for more than five decades and has been reflected in numerous articles and several reviews. The last decade’s enhanced interest is being conducted towards epitaxial layers because of the availability of other possible applications, for instance, as scintillators, visible emitting phosphors or optical waveguides and waveguide lasers. On the other hand, the tendency of borate melts to form glasses makes them attractive for research of micro-crystallization processes in these systems and can be effortless towards finding relatively inexpensive optical glass–ceramic materials with similar composition as alternative components to laser systems. This article reviews the recent progress carried out hitherto on epitaxial layers and glass–ceramic composites of huntite-type rare-earth aluminum borates.

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