Laser-based real-time Temperature Measurements in Detonation Environments

To support DTRA’s agent-defeat efforts, we will refine a laser-based Optical Thermocouple (OTC) technology and build and deliver to DTRA a hardened OTC prototype. This OTC system will be capable of quantifying the localized temporal evolution of temperature inside a detonation environment. The OTC technology is based on two-color fluorescence thermometry to determine the temperature. After laser excitation, the emission intensities at two wavelengths are monitored and, after calibration, the ratio of the intensities is used to determine the temperature. While we previously demonstrated the technical feasibility of the OTC, during Phase II we will focus on: (1) developing a process that results in reproducible sensor coatings with optimized fluorescence intensity; (2) selecting, evaluating, and implementing a signal detection and amplification process; and (3) designing and implementing a hardened and ruggedized OTC design that provides shock control, temperature control, and dust control suitable for use during field tests.