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Proceedings Paper

Highly efficient cladding-pumped double-clad fiber laser based on a concentrically co-grown Yb:YAG/YAG crystal structure (Conference Presentation)
Author(s): Jun Zhang; Youming Chen; Shizhuo Yin; Claire Luo; Mark Dubinskii

Paper Abstract

We investigated double-clad (DC) optical fibers for high power laser applications, with concentrically co-grown ‘Yb:YAG/YAG’ crystal structure, for which ‘crystalline core/crystalline clad’ = CCCC = C4 fiber term was coined. The fibers were fabricated using a liquid phase epitaxial growth (LPE) of undoped single-crystalline YAG cladding around the 100 µm single-crystalline Yb:YAG core separately grown by a laser heated pedestal growth (LHPG) technique. Laser testing of the low-loss C4 fibers with direct diode-clad-pumping at 969 nm has demonstrated over 40 W of core-guided (NA ≈ 0.025) multimode laser output at 1030 nm with over 60% slope efficiency.

Paper Details

Date Published: 19 September 2017
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Proc. SPIE 10382, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XI, 103820O (19 September 2017); doi: 10.1117/12.2277079
Show Author Affiliations
Jun Zhang, U.S. Army Research Lab. (United States)
Youming Chen, U.S. Army Research Lab. (United States)
Shizhuo Yin, The Pennsylvania State Univ. (United States)
Claire Luo, General Opto Solutions, LLC (United States)
Mark Dubinskii, U.S. Army Research Lab. (United States)


Published in SPIE Proceedings Vol. 10382:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XI
Shizhuo Yin; Ruyan Guo, Editor(s)

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