1 mJ pulse bursts from a Yb-doped fiber amplifier
Author
Kalaycıoğlu, Hamit
Eldeniz, Y. B.
Akçaalan, Önder
Yavaş Seydi
Gürel, Kutan
Efe, M.
İlday, Ömer Fatih
Date
2012-05Source Title
Optics Letters
Print ISSN
0146-9592
Electronic ISSN
1539-4794
Publisher
Optical Society of America
Volume
37
Issue
13
Pages
2586 - 2588
Language
English
Type
ArticleItem Usage Stats
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Abstract
We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier capable of generating 60 μJ pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel feedback mechanism shaping the seed of the burst-mode amplifier. The burst energy can be scaled up to 1 mJ, comprising 25 pulses with 40 μJ average individual energy. The amplifier is synchronously pulse pumped to minimize amplified spontaneous emission between the bursts. Pulse propagation is entirely in fiber and fiber-integrated components until the grating compressor, which allows for highly robust operation. The burst repetition rate is set to 1 kHz and spacing between individual pulses is 10 ns. The 40 μJ pulses are externally compressible to a full width at half-maximum of 600 fs. However, due to the substantial pedestal of the compressed pulses, the effective pulse duration is longer, estimated to be 1.2 ps.
Keywords
Amplified spontaneous emissionsBurst repetition rate
Burst-mode
Burst-mode operation
Compressed pulse
Energy distributions
Feedback mechanisms
Grating compressors
In-fiber
Polarization maintaining
Pulse durations
Pulse propagation
Robust operation
Fiber amplifiers
Fibers
Ytterbium
Optical pumping