Optical Power Limiters Countering Frequency Agile Lasers and Dazzlers

The DON26BZ01-NV012 project seeks to develop Mid-Wave Infrared/Long-Wave Infrared (MWIR/LWIR) nonlinear optical (NLO) dyes embedded in sol-gel glass for optical power limiters. These limiters will protect optical sensors from high-intensity, frequency-agile lasers and dazzlers by reducing transmittance at high input power levels. Current sensor protection is limited by fixed filters, which are susceptible to advanced threats. The objective is to create passive, self-activating devices with high low-intensity transparency, fast response and recovery times, high attenuation, and durability for multiple uses. The project also emphasizes improving manufacturability, reliability, and cost-effectiveness of these optical elements and ensuring the reliable domestic availability and synthesis of suitable NLO dyes. Phase I focuses on concept development, feasibility, and material preparation, while Phase II involves prototyping and testing a complete system, potentially leading to classified work. Phase III aims for commercialization in both military and civilian applications.