Ultra-large core birefringent Yb-doped tapered double clad fiber for high power amplifiers | Zendy

A. B. Fedotov | Zendy; Teppo Noronen | Zendy; Regina Gumenyuk | Zendy; Vasiliy Ustimchik | Zendy; Yuri Chamorovskii | Zendy; К.М. Голант | Zendy; Maxim Odnoblyudov | Zendy; Joona Rissanen | Zendy; Tapio Niemi | Zendy; В. Н. Филиппов | Zendy

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Ultra-large core birefringent Yb-doped tapered double clad fiber for high power amplifiers

Author(s) -

A. B. Fedotov,

Teppo Noronen,

Regina Gumenyuk,

Vasiliy Ustimchik,

Yuri Chamorovskii,

К.М. Голант,

Maxim Odnoblyudov,

Joona Rissanen,

Tapio Niemi,

В. Н. Филиппов

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.006581

Subject(s) - optics , materials science , fiber laser , birefringence , polarization maintaining optical fiber , core (optical fiber) , extinction ratio , wavelength , dispersion shifted fiber , amplifier , optoelectronics , optical fiber , fiber optic sensor , physics , cmos

We present a birefringent Yb-doped tapered double-clad fiber with a record core diameter of 96 µm. An impressive gain of over 38 dB was demonstrated for linearly polarized CW and pulsed sources at a wavelength of 1040 nm. For the CW regime the output power was70 W. For a mode-locked fiber laser a pulse energy of 28 µJ with 292 kW peak power was reached at an average output power of 28 W for a 1 MHz repetition rate. The tapered double-clad fiber has a high value of polarization extinction ratio at 30 dB and is capable of delivering the linearly polarized diffraction-limited beam (M 2 = 1.09).

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