Study on preparation process of high diffraction efficiency liquid crystal computer generated hologram

Zhen Wang; Yao Hu; Wanlong Zhang; Shihang Fu; Qun Hao; Yu Zhang

doi:10.1117/12.2550272

12 March 2020 Study on preparation process of high diffraction efficiency liquid crystal computer generated hologram

Zhen Wang, Yao Hu, Wanlong Zhang, Shihang Fu, Qun Hao, Yu Zhang

Proceedings Volume 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 114341J (2020) https://doi.org/10.1117/12.2550272
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

Computer-generated hologram (CGH) method is a high-precision aspherical surface detection method. CGH produces wavefronts of any shape with extremely high precision and is adopted in null test. Liquid crystal CGH (LC-CGH) is a new type of CGH with short production cycle and low cost. It is a promising alternative to traditional CGH. In this paper, the overall process flow of LC grating preparation is presented. The influences of three process parameters, such as LC solution concentration, spin coating speed and time on the three physical quantities of LC grating diffraction efficiency, LC polymer film thickness and phase delay are studied. Based on the analysis, improvement measures are proposed for the preparation process. The research carried out in this paper has guiding significance for the processing and manufacturing of LC-CGH.

Citation Download Citation

Zhen Wang, Yao Hu, Wanlong Zhang, Shihang Fu, Qun Hao, and Yu Zhang "Study on preparation process of high diffraction efficiency liquid crystal computer generated hologram", Proc. SPIE 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 114341J (12 March 2020); https://doi.org/10.1117/12.2550272

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available