High-Power Vertical Cavity Laser Diode Arrays for Space Applications
Agency / Branch:
DOD / MDA
Instead of making incremental improvements to the inherent weakness of the laser facet, Aerius Photonics proposes to fabricate space-qualifiable laser pump arrays that eliminate the weakness of the facet altogether by using kilowatt-capable vertical-cavity surface-emitting lasers (VCSELs), which use a distributed mirror, effectively decoupling the feedback mirror from the output window. When compared to edge-emitting laser arrays, VCSELs offer (1) lower power density at the exit aperture, reducing hotspots, (2) simplified optics, (3) a single solder interface, (4) arbitrary array shape, (5)lower wavelength drift over temperature, and (6) a lower inherent production cost due to their ease of processing and testing. At the end of a successful Phase II, Aerius will deliver arrays with an emission wavelength of 808 nm and an output power of greater than 1000W per bar stack and demonstrating high reliability in a high vacuum environment. In Phase I, they performed baseline reliability studies of kilowatt-capable VCSEL arrays in vacuum and demonstrated their compatibility with space environments. In addition, Aerius' VCSEL arrays demonstrated radiation hardness when exposed to ionizing radiation and proton irradiation.
Small Business Information at Submission:
AERIUS PHOTONICS, LLC.
4160 Market St., Suite 6 Ventura, CA 93003
Number of Employees: