Conference Agenda

Topical Meetings and Sessions:

TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session

More information on the Topical Meetings

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Session Overview
TOM13 S13: Ultrafast: Nonlinear compression 2
Thursday, 16/Sept/2021:
11:15 - 12:45

Session Chair: Jan Rothhardt, Helmholtz-Institute Jena, Germany
Location: Aula 1

1st floor

11:15 - 11:30
ID: 166 / TOM13 S13: 1
TOM 13 Ultrafast Optical Technologies and Applications

Two-stage multi-pass cell scheme for kilowatt-class compression of millijoule-class pulses to the few-cycle regime

Christian Grebing1,2, Michael Müller1, Joachim Buldt1, Henning Stark1, Jens Limpert1,2,3

1Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Germany; 2Fraunhofer Institute for Applied Optics and Precision Engineering, Jena, Germany; 3Helmholtz-Institute Jena, Germany

We demonstrate two multi-pass cell post-compression stages that are optimized for operation at highest average power. In the first stage the pulse duration of 1-mJ 200-fs pulses with up to 1 kW average power is compressed to 31 fs with 96% efficiency yielding the highest average power for sub-100-fs pulses demonstrated to date. This is followed by a second compression stage employing ultra-broadband reflectivity enhanced silver mirrors on a silicon substrate to minimize heating induced aberrations. The second stage supports further compression of the pulse duration to <7 fs at an average power of 388 W with 82% transmission, again an average power record for few-cycle bandwidth pulses. The output of both stages is characterized and shows essentially no loss in terms of beam quality and spatiospectral homogeneity.

11:30 - 11:45
ID: 225 / TOM13 S13: 2
TOM 13 Ultrafast Optical Technologies and Applications

Post-compression of high-peak power pulses in a compact bulk multi-pass cell

Ann-Kathrin Raab1, Marcus Seidel2, Ivan Sytcevich1, Chen Guo1, Gunnar Arisholm3, Anne l'Huillier1, Cord L. Arnold1, Anne-Lise Viotti1,2

1Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden; 2Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany; 3FFI (Norwegian Defence Research Establishment), P.O. Box 25, NO-2027, Kjeller, Norway

We demonstrate efficient post-compression of a 30 W, 0.46 GW peak power Yb source with 250 fs initial pulse duration, down to 31 fs (FWHM) in a bulk multi-pass cell (MPC). The bulk compression setup is compact, based only on off-the-shelf optics and features a total transmission of about 85 %. To the best of our knowledge, this constitutes the highest peak power in bulk MPC compression to-date, competing with gas-based post-compression solutions such as hollow-core fibers or gas-filled MPCs for a similar laser parameter range.

11:45 - 12:00
ID: 244 / TOM13 S13: 3
TOM 13 Ultrafast Optical Technologies and Applications

Pulse post-compression via multi-pass cells for FEL pump-probe experiments at FLASH

Anne-Lise Viotti1,2, Marcus Seidel1, Skirmantas Alisauskas1, Esmerando Escoto1, Henrik Tünnermann1, Katharina Dudde1, Ayhan Tajalli1, Bastian Manschwetus1, Ingmar Hartl1, Christoph M. Heyl1,3,4

1Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany; 2Department of Physics, Lund University, P.O Box 118, SE-221 00 Lund, Sweden; 3Helmholtz-Institute Jena, Fröbelstieg 3, 07743 Jena, Germany; 4GSI Helmhotzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany

The soft x-ray Free-Electron Laser (FEL) FLASH is a unique tool to study ultrafast processes and is mostly used for pump-probe experiments in combination with an optical laser. Within the framework of the FLASH2020+ facility upgrade, the currently operating Ti:Sapphire and OPCPA systems will be largely replaced by high-power Yb:YAG lasers combined with nonlinear pulse compression in multi-pass cells (MPCs). This approach offers superior compactness, efficiency and simplicity of the optical laser systems. We here present first example implementations of MPC compression-based pump-probe laser systems.

12:00 - 12:15
ID: 389 / TOM13 S13: 4
TOM 13 Ultrafast Optical Technologies and Applications

10mJ Hollow-Core Fiber compression at 250W average power with 90% efficiency

Derrek Wilson1,2, Maksym Ivanov1,2, Gabriel Tempea1, Alexis Labranche1, Alicia Ramirez1, Francois Legare2, Clement Paradis3, Arvid Hage3, Torsten Mans3, Carlos Trallero-Herrero4, Bruno Eugen Schmidt1

1few-cycle Inc., Canada; 2INRS, Canada; 3Amphos GmbH, Germany; 4University of Connecticut, USA

We developed a high transmission Hollow-core fiber (HCF) with 1mm ID that supports 97% absolute transmission over 1m of propagation when coupled with lower power regenerative amplifiers. By adding appropriate thermal management to the system, we were able to achieve about 30 times spectral broadening of 11mJ, 1.5ps pulses from a 275W, 25 kHz InnoSlab multi-pass amplifier with 90% fiber transmission. The spectrum achieved in 1 bar Kr supports to a 50fs TL bandwidth. At the conference we plan to present first tests towards J level energy and kW level average power handling.

12:15 - 12:30
ID: 301 / TOM13 S13: 5
TOM 13 Ultrafast Optical Technologies and Applications

Post-pulse compression of 8.6 mJ pulses using a compact multi-pass cell

Praveen Kumar Velpula1, Supriya Rajhans1, Esmerando Escoto1, Rob Shalloo1, Bonaventura Farace1, Kris Poder1, Jens Osterhoff1, Wim P. Leemans1, Ingmar Hartl1, Christoph M. Heyl1,2,3

1Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany; 2Helmholtz-Institute Jena, Fröbelstieg 3, 07743 Jena, Germany; 3GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany.

We present post-pulse compression of a 8.6 mJ, 1.2 ps Yb:YAG laser to a pulse duration of 44 fs at 1 kHz repetition rate in a single compression stage employing a 2m long, Ar filled-multi-pass cell reaching a transmission efficiency greater than 93%.

12:30 - 12:45
ID: 450 / TOM13 S13: 6
TOM 13 Ultrafast Optical Technologies and Applications

Sub-two-cycle pulses in the mid-IR based on thin plate compression at high average power

Mate Kurucz1,2, Roland Flender1, Krishna Murari1, Ugnius Gimzevskis3, Arturas Samalius3, Dominik Hoff4, Balint Kiss1

1ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3., Szeged, H-6728, Hungary; 2University of Szeged, Dom ter 9., H-6720 Szeged, Hungary; 3OPTOMAN, Ukmerges g.427, Vilnius, LT-14185, Lithuania; 4Single Cycle Instruments, Hans-Knöll-Straße 6, 07745 Jena, Germany

Spectral broadening of 3.2 µm pulses is experimentally demonstrated at 8.2 W average power output through nonlinear propagation in the combination of a thin Si and BaF2 crystal plates. Sub-two-cycle compression was achieved, by compressing up to third order dispersion with the combination of bulk compressor and custom-made dispersive mirrors. Excellent long-term power, spectral and CEP stability was observed for a period of 4 hours.