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Optical Source for Organic and Polymeric Nonlinear Device and Material Testing
Final rept. 1 Mar 1998-28 Feb 1999
UNIVERSITY OF CENTRAL FLORIDA ORLANDO CENTER FOR RESEARCH AND EDUCATION IN OPTICS AND LASERS
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We used the DURIP finds as requested to purchase equipment to build a state-of-the-art nonlinear spectroscopy facility at CREOL. This facility, based on a CLARK-MXR CPA-2000 recently replaced by the company with a CPA-2001 at no charge has already produced a wealth of nonlinear spectroscopic data. Armed with these data we have published several article and given many talks on the subject. The facility works well and has been used to determine the nonlinear optical properties of organic materials and semiconductors. The system is now primarily used to measurements of the spectrum of nonlinear absorption and dispersion of nonlinear refraction in organic materials. Such spectra are crucial for determining the applicability and the range of application of organic materials for sensor protection and optical switching. These measurements are now allowing physical models to be properly tested. For example, a 5-level model for reverse saturable absorbers has been shown to work for a large class of organic dyes. We also added an optical parametric generatoramplifier to the system to allow tuning of the excitation wavelength. The parametric oscillator also enables us to absolutely calibrate the system by performing Z-scans as specific wavelengths. This is an important advance in our characterization capability for organic materials.
APPROVED FOR PUBLIC RELEASE