CFEL-ULOCM

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2018-03-29
13:43
OpenAccess [PUBDB-2018-01602] Journal Article
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87-W 1018-nm Yb-fiber ultrafast seeding source for cryogenic Yb:YLF amplifier
Optics letters 43(8), 1686 - 1689 () [10.1364/OL.43.001686]  GO
We demonstrate a compact and robust Yb-fiber master-oscillator power-amplifier system operating at 1018 nm with 2.5-nm bandwidth and 1-ns stretched pulse duration. It produces 87-W average power and 4.9-μJ pulse energy, constituting a powerful seed source for cryogenically cooled ultrafast Yb: yttrium lithium fluoride (Yb:YLF) amplifiers..
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2018-03-02
11:38
OpenAccess [PUBDB-2018-01356] Journal Article
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Pre-chirp managed, core-pumped nonlinear PM fiber amplifier delivering sub-100-fs and high energy (10 nJ) pulses with low noise
Optics express 26(5), 6427 - 6438 () [10.1364/OE.26.006427]  GO
We demonstrate a pre-chirp managed amplification (PCMA) system that is based on two stages of core-pumped, polarization maintaining (PM) fiber amplifiers. It produces output pulses with <65 fs duration and >10 nJ pulse energy from single-mode fibers. [...]
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2018-02-06
11:33
OpenAccess [PUBDB-2018-01075] Journal Article
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Megawatt peak power tunable femtosecond source based on self-phase modulation enabled spectral selection
Optics express 26(3), 3684-3695 () [10.1364/OE.26.003684]  GO
Wavelength widely tunable femtosecond sources can be implemented by optically filtering the leftmost/rightmost spectral lobes of a broadened spectrum due to self-phase modulation (SPM) dominated fiber-optic nonlinearities. We numerically and experimentally investigate the feasibility of implementing such a tunable source inside optical fibers with negative group-velocity dispersion (GVD). [...]
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2018-01-11
14:07
OpenAccess [PUBDB-2018-00503] Journal Article
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Generation of three-dimensional versatile vortex linear light bullets (Invited Paper)
We generate and measure the versatile vortex linear light bullet, which combines a high-order Bessel beam and an Airy pulse. This three-dimensional optical wave packet propagates without distortion in any medium, while carrying an orbital angular momentum. [...]
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2017-12-08
16:44
OpenAccess [PUBDB-2017-13100] Conference Presentation (Invited)

High Energy Waveform Synthesis
8th International Symposium on Ultrafast Photonic Technologies, ISUPT, WinchesterWinchester, United Kingdom, 10 Jul 2017 - 11 Jul 20172017-07-102017-07-11  GO
We review recent progress in high-energy optical waveform synthesis with optical parametric amplifiers pumped by high-energy Ti:Sapphire and Yb-based lasers from the visible to the far infrared..
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2017-08-16
13:41
OpenAccess [PUBDB-2017-09377] Contribution to a conference proceedings/Contribution to a book
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87-W, 1018-nm Yb-fiber ultrafast seeding source for cryogenic Yb:YLF amplifier
Conference on Lasers and Electro-Optics : [Proceedings] - OSA Washington, D.C., 2016. - ISBN 978-1-943580-11-8 - doi:10.1364/CLEO_SI.2016.SM4Q.5
CLEO: Science and Innovations, San Jose, CaliforniaSan Jose, California, USA, 5 Jun 2016 - 10 Jun 20162016-06-052016-06-10
Washington, D.C. : OSA , SM4Q.5 () [10.1364/CLEO_SI.2016.SM4Q.5]  GO
We demonstrate a compact Ytterbium-fiber MOPA system operating at 1018 nm, serving as powerful and compatible seed for cryogenically-cooled Yb:YLF amplifier. The output average power reaches 87 W with pulse energy of 4.9 µJ..
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2017-08-08
14:33
OpenAccess [PUBDB-2017-08913] Book/Report/Dissertation / PhD Thesis
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Power scaling of ultrafast mid-IR source enabled by high-power fiber laser technology
[DESY-THESIS-2017-034]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS , 118 pp. () [10.3204/PUBDB-2017-08913] = Universität Hamburg, Dissertation, 2017  GO
In this thesis, we propose and demonstrate a novel approach to power scaling of DFG-based ultrafast mid-IR laser sources. The essence of this novel approach is the generation of a high-energy signal beam. [...]
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2017-08-08
14:24
[PUBDB-2017-08909] Contribution to a conference proceedings/Contribution to a book
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Towards high power and low noise mid-infrared DFG ultrafast source
CLEO: Science and Innovations in Proceedings Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics, CLEO 2017, San Jose, CaliforniaSan Jose, California, USA, 14 May 2017 - 19 May 20172017-05-142017-05-19
Washington, D.C. : OSA , STu3J () [10.1364/CLEO_SI.2017.STu3J.2] special issue: "CLEO: Science and Innovations 2017"  GO
We theoretically demonstrate that high power low noise mid-IR pulses can be obtained by using SPM-enabled pulses as the signal. Compared with Raman soliton pulse, SPM-enabled pulse exhibits high energy and low timing jitter..
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2017-08-08
12:10
OpenAccess [PUBDB-2017-08891] Contribution to a conference proceedings/Contribution to a book
; ; ; et al
Er-fiber laser enabled femtosecond source tunable from 1.3 to 1.7 $\mu$m for nonlinear optical microscopy
Conference on Lasers and Electro-Optics : [Proceedings] - OSA Washington, D.C., 2017. - ISBN 978-1-943580-27-9 - doi:10.1364/CLEO_SI.2017.SM3L.2
Conference on Lasers and Electro-Optics, CLEO, San Jose, CaliforniaSan Jose, California, USA, 14 May 2017 - 19 May 20172017-05-142017-05-19
Washington, D.C. : OSA , 2 pp. () [10.1364/CLEO_SI.2017.SM3L.2] special issue: "CLEO: Science and Innovations 2017"  GO
We demonstrate an Er-fiber laser based source that produces 100-200 fs pulses widely tunable from 1300 to 1700 nm, constituting an ideal driving source for three-photon excitation nonlinear optical microscopy..
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2017-06-12
11:40
OpenAccess [PUBDB-2017-04701] Journal Article
; ; ; et al
Er-Fiber laser enabled, energy scalable femtosecond source tunable from 1.3 to 1.7 $\mu$m
Optics express 25(14), 15760 - 15774 () [10.1364/OE.25.015760]  GO
We demonstrate that energetic femtosecond pulses tunable from 1.3 to 1.7 µm can be achieved using self-phase modulation enabled spectral broadening followed by spectral lobe filtering. Based on a home-built 5-W Er-fiber laser system operating at 31-MHz repetition rate, we obtain femtosecond pulses that can be continuously tuned from 1.3 to 1.7 µm with >4.5 nJ pulse energy. [...]
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