Measurement, control, and use of non-locality in some liquid crystal based devices

M. Warenghem; J. F. Henninot; J. F. Blach

doi:10.1117/12.620893

6 October 2005 Measurement, control, and use of non-locality in some liquid crystal based devices

M. Warenghem, J. F. Henninot, J. F. Blach

Proceedings Volume 5947, Liquid Crystals: Optics and Applications; 59470N (2005) https://doi.org/10.1117/12.620893
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

Abstract

Mixing non-local process in a material with non-local response can yield to interesting phenomena. This is the case of spatial optical solitons excited in liquid crystals. It has been shown that spatial optical quasi-soliton can be generated either via a heat transfer process or a molecular reorientation. In both cases, light keeps propagating in the waveguide it created. Different parameters can be adjusted to optimize this waveguide and as a result the propagation of the quasi-soliton. Prior to control those parameters, it is interesting to measure the global non locality, i.e. the extension of the beam together with the induced index profile. Herein, it is reported first the main results on quasi soliton in liquid crystals, some technique to measure the induced index distribution. Then, a new method, based on Raman spectroscopy, is proposed to measure simultaneously the beam intensity distribution and the induced molecular reorientation in the case of a soliton generated via reorientation nonlinearity of a nematic liquid crystal. Finally, it is shown how the non-locality can be controlled and used. The case of a curved waveguide obtained this way is reminded.

Citation Download Citation

M. Warenghem, J. F. Henninot, and J. F. Blach "Measurement, control, and use of non-locality in some liquid crystal based devices", Proc. SPIE 5947, Liquid Crystals: Optics and Applications, 59470N (6 October 2005); https://doi.org/10.1117/12.620893

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