Description

The main purpose of this NASA SBIR Phase II proposal is development of a novel type of high resolving power diffraction gratings based on volume Bragg gratings technology. The key innovation, which was used for creation of these gratings, is based on patented technology of 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. The significance of the innovation is that volume diffractive gratings in PTR glass have diffraction efficiency more than 95% and resolving power up to 20,000 in spectral range from 400 to 2700 nm. These gratings have 25 mm-long standard aperture with possibility to increase it up to 50 mm with the spectral resolution less than 50 pm. This, to the best of our knowledge, exceeds parameters of all comparable gratings worldwide. Moreover, as a result of Phase I project performance, a combination of high resolution Bragg grating with Fabri-Perot etalon provides additional increasing of spectral selectivity and enables the further increasing of spectral resolution power. This approach will be used for development of narrow band filters for detection of O2 (766 nm), H2O (935 nm), CO2 (1571 nm) and CH4 (1650 nm) with spectral width well below 1 nm (100 ? 200 pm), aperture 25 mm, throughput exceeding 90% in both reflecting and transmitting geometries. An additional task in Phase II would be a development of a scanning technology within a narrow line about 100 pm with resolution in the range from 1 to 10 pm. Aperture 25 mm, selected radiation should be focused to a photoreceiver of about 200 um.

General Information

• This data is described at

  http://catalog.data.gov/dataset/high-resolving-power-volume-diffractive-gratings-for-400-2700-nm-spectral-range-project Do you think this data is incorrect? Let us know

• This data is published by

  National Aeronautics and Space Administration Do you think this data is incorrect? Let us know

Legal Information

• The rights statement is at

  http://catalog.data.gov/dataset/high-resolving-power-volume-diffractive-gratings-for-400-2700-nm-spectral-range-project Do you think this data is incorrect? Let us know

• Outside the US, this data is available under

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• There are

  yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

• The content is available under

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• The rights statement includes data about

  its data licence Do you think this data is incorrect? Let us know

• This data contains

  no data about individuals Do you think this data is incorrect? Let us know

Practical Information

• The data appears in this collection

  http://catalog.data.gov/organization/nasa-gov Do you think this data is incorrect? Let us know

• The accuracy or relevance of this data will

  go out of date but it is timestamped Do you think this data is incorrect? Let us know

• The data is

  backed up offsite Do you think this data is incorrect? Let us know

Technical Information

• This data is published at

  http://techport.nasa.gov/xml-api/6365 Do you think this data is incorrect? Let us know

• This data is

  machine-readable Do you think this data is incorrect? Let us know

• The format of this data is

  a standard open format Do you think this data is incorrect? Let us know

Social Information

• The documentation includes machine-readable data for

  title Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  description Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  identifier Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  landing page Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  publisher Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  keyword(s) or tag(s) Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  distribution(s) Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  release date Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  modification date Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  temporal coverage Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  language Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  release date Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  a URL to access the data Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  a URL to download the dataset Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  type of download media Do you think this data is incorrect? Let us know

• Find out how to contact someone about this data at

  http://catalog.data.gov/dataset/high-resolving-power-volume-diffractive-gratings-for-400-2700-nm-spectral-range-project Do you think this data is incorrect? Let us know

• Find out how to suggest improvements to publication at

  http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/high-resolving-power-volume-diffractive-gratings-for-400-2700-nm-spectral-range-project Do you think this data is incorrect? Let us know