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Optical Engineering

Ceramic windows and gain media for high-energy lasers
Author(s): Woohong Kim; Guillermo R. Villalobos; Colin Baker; Jesse A. Frantz; Brandon Shaw; Shyam S. Bayya; Bryan Sadowski; Ishwar D. Aggarwal; Michael Hunt; Jasbinder Sanghera
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Paper Abstract

Abstract. Recent progress in high-quality transparent ceramic window materials (MgAl2O4 spinel and β -SiC) and high-power solid-state laser materials (Yb3+ : Y2O3 , Yb3+ : Lu2O3, and Ho3+ : Lu2O3 is reported. Spinel ceramic demonstrates a record low-absorption loss of 6 ppm/cm at 1.06 μm. The capability of fabricating various shapes and sizes of spinel ceramics is also demonstrated. We also report optical transparency from a β -SiC ceramic fabricated by field assisted sintering technology (FAST). We report lasing in hot-pressed Yb3+ : Y2O3 and Yb3+ : Lu2O3 ceramic made from coprecipitated powder. The highest ever reported output power and efficiency from 10% doped Yb3+ : Lu2O3 ceramic is also presented. Lasing oscillation from hot pressed composite of five-layered Yb3+ : Y2O3 ceramic is also demonstrated for the first time.

Paper Details

Date Published: 5 October 2012
PDF: 8 pages
Opt. Eng. 52(2) 021003 doi: 10.1117/1.OE.52.2.021003
Published in: Optical Engineering Volume 52, Issue 2
Show Author Affiliations
Woohong Kim, U.S. Naval Research Lab. (United States)
Guillermo R. Villalobos, U.S. Naval Research Lab. (United States)
Colin Baker, U.S. Naval Research Lab. (United States)
Jesse A. Frantz, U.S. Naval Research Lab. (United States)
Brandon Shaw, U.S. Naval Research Lab. (United States)
Shyam S. Bayya, U.S. Naval Research Lab. (United States)
Bryan Sadowski, Sotera Defense Solutions, Inc. (United States)
Ishwar D. Aggarwal, The Univ. of North Carolina at Charlotte (United States)
Michael Hunt, Univ. Research Foundation (United States)
Jasbinder Sanghera, U.S. Naval Research Lab. (United States)

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