Nonlinear optical properties of the main-chain-type liquid crystalline polymers and electric field effects: II

Tadahiro Asada

doi:10.1117/12.326895

14 October 1998 Nonlinear optical properties of the main-chain-type liquid crystalline polymers and electric field effects: II

Tadahiro Asada

Author Affiliations +

Proceedings Volume 3475, Liquid Crystals II; (1998) https://doi.org/10.1117/12.326895
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

The second harmonic generations (SHG) of liquid crystalline main-chain type polymers were investigated. The sample polymers are copolymers of 2-hydroxy-6-naphtoic acid with 4-hydroxy-benzoic acid, in various composition ratios. SHGs for the samples prepared by applying electric fields in some different manners at the liquid crystalline temperature were compared. The nonlinear optical coefficients d_exp evaluated by Maker Fringe Method of electrically poled samples are 2-3 times larger than that of mechanically oriented sample whose d_exp is about 5pm/V. Quasi-phase matching was performed by piling mechanically oriented thin films with alternatively directed machine direction. Using liquid crystal as the space between films and surfaces and tuning refractive index of the liquid crystals by applying adequate electric field, SH intensity increased up to 12-15 from one sheet of film.

Citation Download Citation

Tadahiro Asada "Nonlinear optical properties of the main-chain-type liquid crystalline polymers and electric field effects: II", Proc. SPIE 3475, Liquid Crystals II, (14 October 1998); https://doi.org/10.1117/12.326895

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