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Transparent ceramics for high-energy laser systems |
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| Authors: | Jas Sanghera Shyam BayyaGuillermo Villalobos Woohong KimJesse Frantz Brandon ShawBryan Sadowski R. MiklosColin Baker Michael HuntIshwar Aggarwal Fred KungDavid Reicher Stan PeplinskiAl Ogloza Peter LangstonChuck Lamar Peter VarmetteMark Dubinskiy Lewis DeSandre |
| Affiliation: | a US Naval Research Laboratory, Washington, DC 20375, United States b GTEC Inc., Crofton, MD 21114, United States c University Research Foundation, Greenbelt, MD 20770, United States d US Air Force Research Laboratory, Kirtland AFB, NM 87117, United States e NAWC, China Lake, CA 93555, United States f US Army Space & Missile Defense Command, Huntsville, AL 35807, United States g SAIC, Huntsville, AL 35806, United States h US Army Research Laboratory, Adelphi, MD, United States i ONR Global, London, UK |
| Abstract: | We demonstrate that transparent magnesium aluminate spinel ceramic possesses excellent thermo-optical properties, a record low absorption loss of 6 ppm/cm, and superior ruggedness which position it as a prime candidate for an exit window aperture for high energy laser systems, especially in hostile environments. We also demonstrate lasing with an efficiency of about 45% in transparent Yb3+:Y2O3 ceramic made by hot pressing high purity submicron co-precipitated powder. This paves the way forward for high power solid state lasers exploiting hosts with higher thermal conductivity than YAG. |
| Keywords: | Spinel Transparent ceramics Laser ceramics |
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