Major factors affecting the efficiency of H-PDLC volume grating

Jihong Zheng; Lingjuan Gu; Songlin Zhuang

doi:10.1117/12.452491

12 December 2002 Major factors affecting the efficiency of H-PDLC volume grating

Jihong Zheng, Lingjuan Gu, Songlin Zhuang

Proceedings Volume 4799, Liquid Crystals VI; (2002) https://doi.org/10.1117/12.452491
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The holographically-formed polymer dispersed liquid crystal (H-PDLC) has been widely studied in recent years. In this paper, we analyze the major factors contributing to the efficiency of volume gratings base on the basic optical theory. With regard to the feature of the special exposure material-PDLC, we have conducted some experiments to investigate the impacts of four major factors, such as different recipes of PDLC, exposing time of PDLC cells, thickness of film and the degree of two laser beams, which contribute to obtain the higher diffraction efficiency. As a result, under the same conditions, it is found that the most significant affecting factor is the recipe of PDLC. The diffraction efficiency is enhanced substantially after new chemistry reagent is mixed into the polymer precursors. Shorter cure time and comparative smaller degree of two laser beams give rise to higher diffraction efficiency. Finally, using 17degree of two laser beams, 50mw power of laser with the wavelength of 441.6 nm and exposing time about 30 seconds, we can obtain about 90% efficiency of the H-PDLC volume grating. Furthermore, we researched the relationship between the applied voltage and the diffraction efficiency.

Citation Download Citation

Jihong Zheng, Lingjuan Gu, and Songlin Zhuang "Major factors affecting the efficiency of H-PDLC volume grating", Proc. SPIE 4799, Liquid Crystals VI, (12 December 2002); https://doi.org/10.1117/12.452491

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