Two-Dimensional Surface Emitting Mid-Wave Infrared (MWIR) Interband Cascade Laser Arrays for High-Power Applications

Two-Dimensional Surface Emitting Mid-Wave Infrared (MWIR) Interband Cascade Laser Arrays for High-Power Applications

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68936-18-C-0024
Agency Tracking Number: N181-016-0290
Amount: $124,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2018
Solicitation Year: 2018
Solicitation Topic Code: N181-016
Solicitation Number: 2018.1
Small Business Information
5770 Morse Rd NE, Solon, IA, 52333
DUNS: 080403085
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Edwin Koerperick
 (563) 663-0257
 ekoerper@fireflyphotonics.com
Business Contact
 Theresa Whittlesey
Phone: (319) 361-7013
Email: twhittlesey@fireflyphotonics.com
Research Institution
N/A
Abstract
We propose achieving high power mid-infrared arrays with interband cascade vertical cavity surface emitting lasers (VCSEL). Unlike quantum cascade lasers, optical selection rules in interband cascade lasers allow vertical emission. The massive parallelism of a VCSEL array will allow small, low power lasers to achieve high total output power with no speckle due to spatial incoherence across the array. Mid-infrared VCSELs have already achieved room temperature, continuous wave operation. We propose improving on state-of-the-art using several innovative approaches: growth on Si for improved thermal management; lower absorption cavity design; improved quantum well design; an oxide aperture to reduce loss by moving the optical mode and the pumped active region away from sidewalls, and improving their overlap; and electroplating with the very high thermal conductivity copper. To extract the heat, we propose modelling of heat pipes to spread the heat over a larger area, then a cold plate to extract heat from the heat pipe. To combine beams from different VCSELs, we propose using COMSOL ray matrix to model microlens arrays combined with macroscopic lenses.

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

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