Achromatic Vector Vortex Waveplates for Coronagraphy, Phase II

Metadata Updated: May 2, 2019

Using small aperture telescopes for detecting exoplanets could have a significant impact on astronomy and other imaging and space communication systems. In this new generation of smaller, lighter and more affordable coronagraph systems, the starlight is rejected with the aid of phase-based transparent masks capable of transmitting planetary light at small angular separation from the star. These so-called vector vortex waveplates (VVW) are complex optical components wherein the optical axis orientation is azimuthally modulated in space at a high spatial frequency. In the Phase 1 of the project, we showed the feasibility of fabricating VVWs that would meet requirements for astronomy applications due to small singularity size, high topological charge, high contrast, and broadband functionality. The breakthrough polarization conversion and beam shaping technology of printing VVWs developed in the Phase 1 will undergo further fundamental improvements in the Phase 2 of the project along with further optimization of photoalignment materials and liquid crystal polymers to fabricate and deliver VVWs characterized by: subwavelength singularity sizes; spectrally broadband/achromatic functionality, particularly, for infrared wavelengths; stability to radiation and large temperature variations; and functionality at cryogenic temperatures. This will accomplish the project's general objective [HTML_REMOVED] development and delivery of VVWs adequate for practical use.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_9318
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 11092b5c-3d84-4edd-8682-975a5e4ebc22
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2014-12-01
Homepage URL https://techport.nasa.gov/view/9318
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash af33aec3542f89daf6806c688591ce4db9bf65a0
Source Schema Version 1.1

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