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Proceedings Paper

MW peak power diffraction limited monolithic Yb-doped tapered fiber amplifier
Author(s): Konstantin K. Bobkov; Maxim Yu. Koptev; Andrei E. Levchenko; Svetlana S. Aleshkina; Sergey L. Semenov; Alexander N. Denisov; Mikhail M. Bubnov; Denis S. Lipatov; Alexander Yu. Laptev; Alexey N. Guryanov; Elena A. Anashkina; Sergey V. Muravyev; Alexey V. Andrianov; Arkady V. Kim; Mikhail E. Likhachev
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Paper Abstract

Chirped pulse monolithic fiber amplifier based on a newly developed tapered polarization maintaining Yb-doped fiber has been developed and optimized. A novel amplification regime in a relatively long (220 cm) tapered fiber of improved design, which has been theoretically predicted, allowed us to achieve an ultimate high peak power. In this regime, the signal propagates most of the fiber without amplification and growths very rapidly only in the last 80 cm of the tapered fiber, which has a mode field area of approximately 1000 μm2 near the output. We have demonstrated amplification of 20 ps chirped pulses centered at 1056-nm with spectral width of 20 nm to 0.7 MW peak power directly from the tapered fiber amplifier. The pulses had a diffraction limited quality (M2 ~ 1.124) and could be compressed down to 350 fs with 50% efficiency. In addition, amplification of narrow-band 9 ps pulses centered at 1064 nm to a peak power of 1.8 MW directly from the tapered fiber amplifier was demonstrated.

Paper Details

Date Published: 22 February 2017
PDF: 13 pages
Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 1008309 (22 February 2017); doi: 10.1117/12.2253270
Show Author Affiliations
Konstantin K. Bobkov, Fiber Optics Research Ctr. (Russian Federation)
Maxim Yu. Koptev, Institute of Applied Physics (Russian Federation)
Univ. of Nizhni Novgorod (Russian Federation)
Andrei E. Levchenko, Fiber Optics Research Ctr. (Russian Federation)
Svetlana S. Aleshkina, Fiber Optics Research Ctr. (Russian Federation)
Sergey L. Semenov, Fiber Optics Research Ctr. (Russian Federation)
Alexander N. Denisov, Fiber Optics Research Ctr. (Russian Federation)
Mikhail M. Bubnov, Fiber Optics Research Ctr. (Russian Federation)
Denis S. Lipatov, Institute of Chemistry of High-Purity Substances (Russian Federation)
Alexander Yu. Laptev, Institute of Chemistry of High-Purity Substances (Russian Federation)
Alexey N. Guryanov, Institute of Chemistry of High-Purity Substances (Russian Federation)
Elena A. Anashkina, Institute of Applied Physics (Russian Federation)
Sergey V. Muravyev, Institute of Applied Physics (Russian Federation)
Alexey V. Andrianov, Institute of Applied Physics (Russian Federation)
Arkady V. Kim, Institute of Applied Physics (Russian Federation)
Mikhail E. Likhachev, Fiber Optics Research Ctr. (Russian Federation)


Published in SPIE Proceedings Vol. 10083:
Fiber Lasers XIV: Technology and Systems
Craig A. Robin; Ingmar Hartl, Editor(s)

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