Tunable LWIR Notch Filter Metasurfaces

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911QX-18-C-0002
Agency Tracking Number: A2-7004
Amount: $504,999.76
Phase: Phase II
Program: SBIR
Solicitation Topic Code: A16-094
Solicitation Number: 2016.2
Timeline
Solicitation Year: 2016
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-04-05
Award End Date (Contract End Date): 2019-04-04
Small Business Information
6201 East Oltorf St., Austin, TX, 78741
DUNS: 100651798
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mark Lucente, Ph.D.
 (512) 389-9990
 mlucente@nanohmics.com
Business Contact
 Michael Mayo
Phone: (512) 389-9990
Email: mmayo@nanohmics.com
Research Institution
N/A
Abstract
For dynamic protection of LWIR sensors from laser dazzler threats, Nanohmics, Inc., proposes to develop a thin, light-weight, electronically tunable notch filter based on microfabricated graphene-integrated metasurfaces.The optical filter can reject a specific narrow spectral line (notch) or multiple simultaneous notches.The metasurface comprises an engineered array of resonant microstructure nanoantennas that leverage standard materials and microfabrication techniques to reduce costs and provide a rapid route to commercialization.With no moving parts, the notch filter is rugged and consumes little power.In Phase I Nanohmics designed, fabricated, and tested proof-of-concept filters with TRL 3, demonstrating the feasibility of a tunable LWIR notch filter based on optical metasurfaces for dynamic protection of sensor instruments in the LWIR spectral band, 8-12 m.Phase I laboratory tests and modeling strengthened the design for a scaled-up, high-rejection prototype, which will be developed to TRL 5 and provided to the Army by the end of Phase II.It will be thermally engineered to operate properly for optical irradiance of 100 mW/sq.cm.The thin (<5 mm) notch filter will be rapidly tunable with a switching rate of 60 Hz, and highly insensitive to polarization and angle of incidence, with an acceptance angle of 32.

* Information listed above is at the time of submission. *

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