Picosecond Pulse Tapered Fiber Amplifier Operated near 1030 nm with Peak Power up to 1 MW

被引：2

作者：

Mikhailov, Egor K. ^{[1
]}

Bobkov, Konstantin K. ^{[2
]}

Levchenko, Andrey E. ^{[1
]}

Velmiskin, Vladimir V. ^{[1
]}

Khudyakov, Dmitry V. ^{[3
]}

Aleshkina, Svetlana S. ^{[1
]}

Zaushitsyna, Tatiana S. ^{[1
]}

Bubnov, Mikhail M. ^{[1
]}

Lipatov, Denis S. ^{[4
]}

Likhachev, Mikhail E. ^{[1
]}

机构：

[1] Russian Acad Sci, Dianov Fiber Opt Res Ctr, Prokhorov Gen Phys Inst, Moscow 119991, Russia

[2] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England

[3] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia

[4] Russian Acad Sci, GG Devyatykh Inst Chem High Pur Subst, Nizhnii Novgorod 603950, Russia

来源：

PHOTONICS | 2023年 / 10卷 / 12期

关键词：

Yb-doped fiber; tapered fiber; high peak power laser; large-mode-area fiber; YB-DOPED FIBER; GENERATION; AMPLIFICATION;

D O I：

10.3390/photonics10121385

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrated an optimization of a picosecond fiber amplifier based on Yb-doped tapered fiber in a spectral range of 1030 nm. Nonlinear effects limiting peak power scaling (stimulated Raman scattering and four-wave mixing) were studied and factors affecting their threshold were established, such as gain, diameter profile along the length of taper, output mode field diameter, and numerical aperture of a pump. By determining the optimal amplification regime and manufacturing advanced tapered fibers, we amplified 13 ps pulses to a record-high peak power of 1 MW at a wavelength of 1029 nm directly at the output of the fiber at an average power of 13.8 W. Four-wave mixing was the limiting factor, and the total fraction of deleterious components in the output spectrum was similar to 2%. The quality of the output beam was close to being diffraction limited (M2 < 1.2).

引用

页数：15

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