Computer generated holographic microtags
Abstract
A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers is disclosed. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them. 5 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 597142
- Patent Number(s):
- 5729365
- Application Number:
- PAN: 8-583,889; TRN: 98:004646
- Assignee:
- Sandia Corp., Albuquerque, NM (United States)
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 17 Mar 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 05 NUCLEAR FUELS; IDENTIFICATION SYSTEMS; MINIATURIZATION; DESIGN; HOLOGRAPHY; READOUT SYSTEMS; CRIME; USES; SECURITY
Citation Formats
Sweatt, W C. Computer generated holographic microtags. United States: N. p., 1998.
Web.
Sweatt, W C. Computer generated holographic microtags. United States.
Sweatt, W C. Tue .
"Computer generated holographic microtags". United States.
@article{osti_597142,
title = {Computer generated holographic microtags},
author = {Sweatt, W C},
abstractNote = {A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers is disclosed. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {3}
}
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