Accession Number:

ADA495425

Title:

In-Fiber Magneto-Optic Devices Based on Ultrahigh Verdet Constant Organic Materials and Holey Fibers

Descriptive Note:

Final performance rept. 1 Dec 2005-30 Nov 2008

Corporate Author:

ARIZONA UNIV BOARD OF REGENTS TUCSON

Report Date:

2009-02-02

Pagination or Media Count:

30.0

Abstract:

A high sensitivity Verdet constant measurement system was developed that obtained Verdet constants for commercially available standards in excellent agreement with the literature. We have observed Verdet constants of approximately 100,000 degreesT-m in regioregular polythiophenes and shown that the regioregularity and processing conditions critically effect their properties. New magnetite nanoparticleacrylate polymer coreshell nanocomposites with exceptional transparency across the visibleIR have been developed. These composites exhibit Verdet constants 100,000 degreesT-m in pristine films and 1,000,000 degreesT-m in magnetic field poled films at a few weight percent nanoparticle loading. Our unique polymer synthesis allows us to tune the refractive index of the final composite. We have demonstrated waveguide Faraday rotation 2 degrees using a magnetic field poled nanocomposite as the cladding for a sol-gel waveguide core, and further optimization of optical properties, poling, magnetic field delivery and nanoparticle loading should give the rotation required for an isolator. A garnet-based magnetic field sensor working at about 100 pT has also been demonstrated. KU Leuven provided regioregular polythiophenes and magnetite nanoparticles for our studies.

Subject Categories:

  • Electricity and Magnetism
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE