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http://dx.doi.org/10.3807/KJOP.2019.30.4.167

Characteristics of Stimulated Brillouin Scattering Suppression in High-power Fiber Lasers Using Temperature Gradients  

Jeong, Seongmook (Future Technology R&D-2., LIGNex1)
Kim, Kihyuck (Future Technology R&D-2., LIGNex1)
Lee, Sunghun (Future Technology R&D-2., LIGNex1)
Hwang, Soonhwi (Future Technology R&D-2., LIGNex1)
Yang, Hwanseok (Future Technology R&D-2., LIGNex1)
Moon, Byunghyuck (Sensor System Research Center, Korea Institute of Science and Technology)
Jhon, Young Min (Sensor System Research Center, Korea Institute of Science and Technology)
Park, Min Kyu (Ground Technology Research Institute 3rd Directorate, Agency for Defense Development)
Lee, Jung Hwan (Ground Technology Research Institute 3rd Directorate, Agency for Defense Development)
Publication Information
Korean Journal of Optics and Photonics / v.30, no.4, 2019 , pp. 167-173 More about this Journal
Abstract
In this paper, we studied characteristics of stimulated Brillouin scattering (SBS) suppression in high-power fiber lasers by using apparatuses applying a temperature gradient (i.e. a step, a sine shape, and random temperature distribution) along the fiber. From the ytterbium-doped polarization-maintaining fiber master oscillator power amplifier built in house, we measured the back-reflection spectrum and power for each temperature gradient, showing that the step shape temperature distribution was the most effective way to suppress SBS. In addition, we investigated the interaction of pseudo-random binary sequence phase modulation conditions and temperature gradients for SBS suppression.
Keywords
Fiber laser; Stimulated Brillouin scattering; Temperature gradients;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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