Steven Tran Rose Hills
Plasma Spray AR Coating of CMB Optics
Studying the Cosmic Microwave Background (CMB) requires highly sensitive optical instrumentation. I will be developing antireflective (AR) coating for lenses to be deployed in Chile to study the CMB. These AR coatings lower reflective loss, help separate CMB signals from other interference, and increase the bandwidth of the signal from the early universe. I will be developing AR coatings using plasma spray, specifically high velocity oxy-fuel spray. This method superheats a material which is then jetted on a surface to yield a uniform surface coating. Parameters of the spray must be optimized to yield the desired refractive properties of the coatings. Furthermore, I will be working with plasma spray as a method of repairing a broken alumina lens. My research goal is to be able to fine tune the use of plasma spray for optical coatings.