The effects of external applied voltage on the nonlinear optical properties of a dye-doped nematic liquid crystal by using a single beam

M. H. Majles Ara; R. Bahramian; M. Abolhasani

doi:10.1117/12.815901

2 December 2008 The effects of external applied voltage on the nonlinear optical properties of a dye-doped nematic liquid crystal by using a single beam

M. H. Majles Ara, R. Bahramian, M. Abolhasani

Author Affiliations +

Proceedings Volume 7142, Sixth International Conference on Advanced Optical Materials and Devices (AOMD-6); 71420W (2008) https://doi.org/10.1117/12.815901
Event: Sixth International Conference on Advanced Optical Materials and Devices, 2008, Riga, Latvia

Abstract

We report the experimental data of typical liquid crystals (6CHBT and w1680) in the nematic phase doped with and without Sudan dyes. We investigated the effect of an ac-applied voltage on the nonlinear behavior of dye doped liquid crystal (DDLC). The z-scan technique is used to measure the amplitude and the sign of the nonlinear refractive indices DDLC. The amplitude of negative nonlinear refractive indices was (~10^-5cm²/W). The nonlinear absorption coefficient β of DDLC was measured by using open aperture z- scan technique. Also the optical limiting (OL) response of DDLC was obtained. The novel effects on the far-field diffraction patterns of a Gaussian beam were depended on the external applied field. The measurements were performed using a CW He:Ne laser and CW Nd:Yag laser tuned at 632.8 nm and 532 nm, respectively. Also Gaussian beam propagated through a thin cell (sample thickness =11.8 μm).

Citation Download Citation

M. H. Majles Ara, R. Bahramian, and M. Abolhasani "The effects of external applied voltage on the nonlinear optical properties of a dye-doped nematic liquid crystal by using a single beam", Proc. SPIE 7142, Sixth International Conference on Advanced Optical Materials and Devices (AOMD-6), 71420W (2 December 2008); https://doi.org/10.1117/12.815901

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Liquid crystals

Refractive index

Transmittance

Absorption

Gaussian beams

Molecules

Far-field diffraction

Show All Keywords

Keywords/Phrases

Search In:

Publication Years