To advance the science of high power fiber lasers, in-house drawn specialty optical fibers are investigated. Ongoing research involves the fabrication and testing of Yb- and Tm-doped fibers at 1μm and 2μm. Using specialized fiber and pump mixing geometries, dopant profiles and system configurations, the performance of our in-house drawn active fibers has been examined. Results on a highly multi-mode, high average power pulsed Raman fiber amplifier pumped by a thin disc laser are presented. The Raman fiber is a large mode-area graded index fiber, also drawn in house. Finally, the development of capabilities for kilometer range propagation experiments of kW-level CW and TW-level pulsed lasers at the TISTEF laser range is reported.
Patrick Roumayah, Alex Sincore, Justin Cook, Joshua Bradford, Jose Enrique Antonio-Lopez, Stefan Gausmann, Dong Jin Shin, Ali Abdulfattah, Lawrence Shah, Axel Schülzgen, Rodrigo Amezcua Correa, and Martin Richardson, "Progress on high-power Yb, Tm and Raman fiber lasers," Proc. SPIE 10637, Laser Technology for Defense and Security XIV, 1063702 (Presented at SPIE Defense + Security: April 17, 2018; Published: 4 May 2018); https://doi.org/10.1117/12.2305241.
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Glassy 2-(1-benzyl-2-styryl-6-methylpyridin-4(1H)-ylidene) fragment containing 1H-indene-1,3(2H)-dione and pyrimidine-2,4,6(1H,3H,5H)-trione derivatives with light-emitting and amplified spontaneous emission properties