High gain and output power from a novel 17/125-56/400 PM Yb-doped tapered double-clad fiber

被引：0

作者：

Roy, V. ^{[1
]}

Boivin, M. ^{[1
]}

Labranche, B. ^{[1
]}

Lavoie, S. ^{[1
]}

Deshaies, S. ^{[1
]}

Martineau, Q. ^{[1
]}

Dube, A. ^{[1
]}

Desbiens, L. ^{[1
]}

Deladurantaye, M. ^{[1
]}

Proulx, A. ^{[1
]}

Taillon, Y. ^{[1
]}

机构：

[1] INO, 2740 Einstein, Quebec City, PQ G1P 4S4, Canada

来源：

FIBER LASERS XXI:TECHNOLOGY AND SYSTEMS | 2024年 / 12865卷

关键词：

Fiber amplifier; Large mode area; Ytterbium; Polarization-maintaining; Tapered fiber; Transverse Mode Instability; Photodarkening; Ultrashort pulses;

D O I：

10.1117/12.3000373

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A polarization-maintaining ytterbium-doped tapered double-cladding fiber was made from an aluminophosphosilicate glass preform, with core/cladding diameters of 17/125 mu m and 56/400 mu m at the small and large ends of the flared section, respectively. Amplifier gain exceeding 50 dB and average output power beyond 200 W were simultaneously achieved after the 1032-nm seed laser, while amplified spontaneous emission was measured < 1% of total output power. This fiber also yields an optical efficiency close to 90%, near diffraction-limited output with M-2 < 1.2 and polarization extinction ratio > 18 dB. The newly developed fiber holds the potential to combine two successive amplifier stages in a single device, with foreseen benefits for ultrafast fiber amplifiers and laser harmonics generation.

引用

页数：6

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