Invention Grant
- Patent Title: System and method for remote sensing for a target
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Application No.: US15926556Application Date: 2018-03-20
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Publication No.: US10775537B2Publication Date: 2020-09-15
- Inventor: David G. MacDonnell , Wenbo Sun , Yongxiang Hu
- Applicant: U.S.A. AS REPRESENTED BY THE ADMINISTRATOR OF NASA
- Applicant Address: US DC Washington
- Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
- Current Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
- Current Assignee Address: US DC Washington
- Agent M. Bruce Harper; Andrea Z. Warmbier; Helen M. Galus
- Main IPC: G02B5/00
- IPC: G02B5/00 ; G01S17/00 ; G02B5/18 ; G01S17/89 ; G01N21/55 ; G01N21/21 ; G01S7/481 ; G01N21/17

Abstract:
A remote sensing system includes a primary beam configured to carry orbital angular momentum and characterized by a mode number (m), with the mode number (m) being a non-zero integer. The primary beam is configured to be directed at a target. A photon sieve is configured to receive a secondary beam emanating from the target. The secondary beam at least partially includes a portion of the primary beam. The photon sieve includes a plurality of holes forming one or more respective spiral patterns. The quantity of the respective spiral patterns in the photon sieve corresponds to the mode number (m) of the primary beam. The plurality of holes may be configured to have a minimum diameter such that the minimum diameter is greater than a predefined wavelength of the primary beam. The respective spiral patterns extend between a respective first hole and a respective final hole.
Public/Granted literature
- US20180275322A1 System and Method for Remote Sensing for a Target Public/Granted day:2018-09-27
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