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High-speed Resonant-Cavity Infrared Detector Arrays and Narrow-Linewidth Quantum Cascade Lasers for Free Space Communication Links

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF-20-P-0012
Agency Tracking Number: A19B-005-0094
Amount: $145,499.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: A19B-T005
Solicitation Number: 19.B
Solicitation Year: 2019
Award Year: 2020
Award Start Date (Proposal Award Date): 2019-12-20
Award End Date (Contract End Date): 2020-06-19
Small Business Information
200 N. Prospect Ave.
Madison, WI 53726
United States
DUNS: 829814925
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Robert Marsland
 (608) 216-6920
Business Contact
 Lynda Botez
Phone: (608) 231-3432
Research Institution
 University of Wisconsin Madison
 Kim Moreland Kim Moreland
Research and Sponsored Programs 21 N. Park Street, Suite 6401
Madison, WI 53715
United States

 (608) 262-3822
 Nonprofit College or University

The ever-growing need for high-data rate, low-latency, secure, wireless communications driven by applications ranging from vehicle automation to ad-hoc battlefield command and control necessitate free space communication links (FSCLs) operating outside of the regulated and crowded rf-frequency bands. Intraband and NRL, working with the UW-Madison as the STTR Research Partner, propose to investigate the feasibility of FSCLs based on the UW/Intraband 2.5-W MOCVD-grown QCL technology and the NRL resonant-cavity infrared detectors (RCIDs) when optimized for modulation bandwidth > 5 GHz, transmitter power > 1 W, narrow linewidth, and link signal to noise ratio. The RCID resonant cavity reduces the absorber thickness required to achieve high quantum efficiency in the detector. This reduced thickness reduces the dark current, increases specific detectivity, and decreases carrier transit time. The ~ 50-nm optical bandwidth of the RCID also aids in rejecting background radiation but requires a QCL with narrow linewidth. Intraband will work with the UW Madison to design and model high-power, narrow-linewidth QCLs optimized for high-speed modulation. NRL will investigate the feasibility of > 5-GHz bandwidth for a MWIR RCID and provide modeled device characteristics for devices and arrays. Intraband will develop a link model with projected performance based on simulated device characteristics.

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

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