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Amiel A. Ishaaya on Muck Rack

Amiel A. Ishaaya

As seen in: MDPI
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Articles

Femtosecond Inscription of a Fiber Bragg Grating Spectral Array in the Same Spatial Location

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By Aviran Halstuch, Amiel A. Ishaaya
| MDPI
Abstract : A five fiber Bragg grating (FBG) array is inscribed at the same spot with a single uniform phase-mask (PM). The inscription setup consists of a near-infrared femtosecond laser, a PM, a defocusing spherical lens and a cylindrical focusing lens. The tunability of the center Bragg wavelength is achieved by a defocusing lens, and by translating the PM, which results in a different magnification of the PM.
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Characterization of sub-nanosecond pulsed laser amplification with Er:Yb co-doped phosphate glass fibers

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By Amiel A. Ishaaya, Daniel Milanese, Davide Janner, Diego Pugliese
| osapublishing.org
Abstract We present an experimental characterization of the amplification of sub-nanosecond duration laser pulses at a wavelength of 1538 nm in short custom-made Er:Yb phosphate glass fibers with different core diameters. The fibers vary in their diameter from 100 µm (highly multi-mode) down to 12 µm (single-mode). The peak power, energy per pulse, and spectral shape of the amplified signal are presented.
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Femtosecond Bragg grating inscription in an Yb-doped large-mode-area multicore fiber for high-power laser applications

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By Amiel A. Ishaaya, Aviran Halstuch, Raghuraman Sidharthan, Seongwoo Yoo
| osapublishing.org
Abstract We demonstrate a direct inscription of a fiber Bragg grating (FBG) in the active cores of an Yb-doped large mode area multicore fiber (MCF). An ultrashort pulsed laser is used to inscribe the FBG simultaneously in all six cores. In order to validate the FBG reflection and uniformity, the FBG is incorporated as a rear mirror in a fiber laser oscillator setup.
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