|PROPOSAL NUMBER:||05 S4.04-8021|
|SUBTOPIC TITLE:||Optics and Optical Telescopes (including X-ray, UV, Visual, IR)|
|PROPOSAL TITLE:||High resolving power volume diffractive gratings for 400-2700 nm spectral range|
SMALL BUSINESS CONCERN
(Firm Name, Mail Address, City/State/Zip, Phone)
3267 Progress Drive
Orlando ,FL 32826 - 3230
(407) 381 - 4115
PRINCIPAL INVESTIGATOR/PROJECT MANAGER
(Name, E-mail, Mail Address, City/State/Zip, Phone)
3267 Progress Drive
Orlando , FL 32826 -3230
(407) 590 - 4889
TECHNICAL ABSTRACT (LIMIT 200 WORDS)
The purpose of this NASA SBIR Phase I proposal is to develop a novel type of high resolving power diffraction gratings based on volume Bragg gratings technology. The key innovation to be used for creation of these gratings is the patented technology on production of high efficiency volume diffractive elements in photo-thermo-refractive (PTR) glass on which OptiGrate has an exclusive license from the University of Central Florida. Gratings with diffraction efficiency more than 90% and resolving power up to 20,000 will be demonstrated for the spectral analysis applications in the visible and near-IR spectra (from 400 to 2700 nm). These gratings will have 25- to 50-mm aperture with the spectral resolution down to 50 pm and less. This, to the best of our knowledge, will exceed parameters of all comparable gratings available nowadays. Moreover, PTR volume diffractive gratings are stable over time for decades, thermally-stable up to 400??C, their resistance to CW laser radiation exceeds 10 kW/cm^2, and laser-induced damage threshold is 10 and 40 J/cm^2 for 1- and 8-nm pulse width, respectively. Absorption of these gratings is only 0.1 cm^-1 at 1 um wavelength after exposure to 10 Mrad of gamma radiation.
POTENTIAL NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
Unique properties of volume diffractive gratings in PTR glass can be uses for such NASA-based applications as high-resolution imaging and spectroscopy, free-space optical communications (range finding, targeting, remote sensing, etc.), spectral sensing, LIDARs, LADARs, etc.
POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
Diffractive optics in PTR glass can be used as intracavity mode selectors or output couplers in high-power laser systems, spectrally and angularly controlled diffractive beam deflectors, beam steering elements, incoherent and coherent beam combiners for both solid-state and semiconductor lasers, adjustable attenuators and beam splitters for laser beams, etc.
|NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.|
TECHNOLOGY TAXONOMY MAPPING
Large Antennas and Telescopes
Optical & Photonic Materials