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Broadband spectral combining of three pulse-shaped fiber amplifiers with 42fs compressed pulse duration

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.486884· OSTI ID:1967508
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We demonstrate ultra-broadband spectral combining of ultrashort pulses from Yb-doped fiber amplifiers, with coherently spectrally synthesized pulse shaping, to achieve tens-of-fs pulses. This method can fully compensate for gain narrowing and high order dispersion over broad bandwidth. We produce 42fs pulses by spectrally synthesizing three chirped-pulse fiber amplifiers and two programmable pulse shapers across an 80nm overall bandwidth. To the best of our knowledge, this is the shortest pulse duration achieved from a spectrally combined fiber system at one-micron wavelength. This work provides a path toward high-energy, tens-of-fs fiber chirped-pulse amplification systems.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1967508
Alternate ID(s):
OSTI ID: 2228273
Journal Information:
Optics Express, Journal Name: Optics Express Journal Issue: 8 Vol. 31; ISSN 1094-4087; ISSN OPEXFF
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

References (16)

Synthesis of a single cycle of light with compact erbium-doped fibre technology journal December 2009
High-energy pulse synthesis with sub-cycle waveform control for strong-field physics journal July 2011
Coherent Beam Combining of Fiber Amplifiers Using Stochastic Parallel Gradient Descent Algorithm and Its Application journal January 2009
Femtosecond pulse spectral synthesis in coherently-spectrally combined multi-channel fiber chirped pulse amplifiers journal February 2013
Spatially dispersive amplification in a 12-core fiber and femtosecond pulse synthesis by coherent spectral combining journal May 2013
Single-mode chirally-coupled-core fibers with larger than 50µm diameter cores journal January 2014
Coherent pulse stacking amplification using low-finesse Gires-Tournois interferometers journal January 2015
Spectral division amplification of a 40 nm bandwidth in a multicore Yb doped fiber and femtosecond pulse synthesis with in-fiber delay line journal January 2015
High-energy few-cycle Yb-doped fiber amplifier source based on a single nonlinear compression stage journal January 2017
Two-channel pulse synthesis to overcome gain narrowing in femtosecond fiber amplifiers journal December 2013
Generation of above-terawatt 1.5-cycle visible pulses at 1  kHz by post-compression in a hollow fiber journal June 2020
70 mJ nonlinear compression and scaling route for an Yb amplifier using large-core hollow fibers journal January 2021
Spectral broadening of 112  mJ, 13  ps pulses at 5  kHz in a LG 10 multipass cell with compressibility to 37  fs journal January 2021
1  kW, 10  mJ, 120  fs coherently combined fiber CPA laser system journal January 2021
High-efficiency supercontinuum generation in solid thin plates at 01  TW level journal January 2017
23  mJ high-power fiber CPA system using electro-optically controlled divided-pulse amplification journal January 2019

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