Large Wedge Optics with ARSS for High Energy Laser Beam Diagnostics
Abstract
The Megawatt Government Diagnostic System (MGDS) development team needs the equipment and fabrication expertise at UNC Charlotte for developing Random Anti-Reflection Surface Structures (ARSS) on large (8-12-inch diameter) fused silica wedges. The MGDS will be used to make laser beam quality measurements on megawatt class high energy lasers. One of the key elements of the MGDS design is a glass wedge with one polished side to sample ~4% of the beam. The 2nd side will need to have minimum reflection and very high laser damage threshold. Two systems are under construction, based on 8-in- and 12-in-diameter wedges respectively.This proposal is to continue UNC Charlotte ARSS fabrication efforts on Side-2 of the 12-in-diameter MGDS wedges under the larger High Energy Laser Scaling Initiative (HELSI) and close collaboration with Navy Surface Warfare Center (NSWC) Dahlgren. We are looking for the treatment to reflect<0.1% of light between 1030-1080 nm wavelengths (w. focus on 1070 nm).This abstract is publically releaseable.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 08, 2024
- Source ID
- N000142412530
Entities
People
- Thomas Hutchens
Organizations
- Office of Naval Research
- United States Navy
- University of North Carolina at Charlotte