2.2 Ultrafast Molecular Dynamics

Project coordinators: A. Rouzée , K. Amini

T3: Strong field excitation and HHG in tailored fields

Part of Project 2.2 is dedicated to advancing the generation of attosecond pulses with controlled polarization. We have carried out an extensive series of studies on high-harmonic generation (HHG) dynamics in two-color, bi-circular (TCBC) driving schemes employing tailored fields with frequency ratios of ω/2ω, ω/3ω, and ω/4ω in the 400–1600 nm spectral range. These efforts culminated in the demonstration of a novel scheme for producing isolated attosecond pulses with high ellipticity, together with the full characterization of their polarization state (U. Bengs, N. Zhavoronkov, Scientific Reports11, 9570)

Fig: (A) TCBC approach: femtosecond driving radiation with opposite helicity and multiple frequencies, (B) XUV-chiral continuum generated with few cycles w-2w driving radiation, (C) temporal shape of the chiral HHG pulse evaluated for the spectrum on the position of white dashed line in (B).

Fig.: (A) Origin of the Stückelberger oscillations. Energy of the Rydberg state follows the instantaneous field intensity I. (B) Radiation originate from FID of excited states associated with spin-orbit components of the Ar+ ion (2P1/2 and 2P3/2), (C) results of the volume-averaged simulations for the two-level atom model (colour lines) and TDSE (black line).

Another new approach was developed in a frame of high harmonic spectroscopy to recover the electronic state population dynamics of strongly driven Rydberg states by all-optical measurements in terms of Stückelberg spectroscopy. Combining the experimental results with accurate numerical simulations and a simple model we demonstrate the potential of this art of spectroscopy to characterize lifetimes of Rydberg states dressed by laser fields with strengths far exceeding the Coulomb field between the Rydberg electron and the core (U.Bengs, N, Zhavoronkov et. al.,Phys. Rev. Res.., 4, 023135 (2022)).

People involved:

Nickolai Zhavoronkov, Misha Ivanov

Publikationen des MBI

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Publikationen von 2025

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A1-P-2025.01

Melting, bubblelike expansion, and explosion of superheated plasmonic nanoparticles

S. Dold, T. Reichenbach, A. Colombo, J. Jordan, I. Barke, P. Behrens, N. Bernhardt, J. Correa, S. Düsterer, B. Erk, T. Fennel, L. Hecht, A. Heilrath, R. Irsig, N. Iwe, P. Kolb, B. Kruse, B. Langbehn, B. Manschwetus, P. Marienhagen, F. Martinez, K.-H. Meiwes-Broer, K. Oldenburg, C. Passow, C. Peltz, M. Sauppe, F. Seel, R. M. P. Tanyag, R. Treusch, A. Ulmer, S. Walz, M. Moseler, T. Möller, D. Rupp, B. v. Issendorff

Physical review letters 134 (2025) 136101/1-7

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A1-P-2025.02

Extreme ultraviolet high-harmonic interferometry of excitation-induced bandgap dynamics in solids

L.-M. Koll, S. V. B. Jensen, P. J. van Essen, B. de Keijzer, E. Olsson, J. Cottom, T. Witting, A. Husakou, M. J. J. Vrakking, L. B. Madsen, P. M. Kraus, P. Jürgens

Optica 12 (2025) 1606-1614

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A1-P-2025.03

Visualizing the three-dimensional arrangement of hydrogen atoms in organic molecules by Coulomb explosion imaging

A. E. Green, K. Chen, S. Bhattacharyya, F. Allum, S. Usenko, M. N. R. Ashfold, T. M. Baumann, K. D. Borne, M. Brouard, M. Burt, B. F. E. Curchod, B. Erk, R. J. G. Forbes, L. M. Ibele, R. A. Ingle, H. V. Sa Lam, X. Li, K. Lin, T. Mazza, J. W. McManus, M. Meyer, T. Mullins, J. P. Figueira Nunes, D. Rivas, A. Roerig, A. Rouzee, P. Schmidt, J. Searles, B. Senfftleben, H. Stapelfeldt, R. M. P. Tanyag, F. Tranter, A. S. Venkatachalam, E. Wang, E. M. Warne, P. M. Weber, T. J. A. Wolf, T. Jahnke, A. Rudenko, R. Boll, D. Rolles

Journal of the American Chemical Society 147 (2025) 1-17

A2-P-2025.03

Attosecond optical orientation

L. B. Drescher, N. Mayer, K. Gannan, J. R. Adelman, S. R. Leone

Physical Review Letters 135 (2025) 163201/1-8

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A2-P-2025.04

Dynamic enhancement of single-shot temporal contrast measurement by self-referenced spectral interferometry

S. Bock, T. Oksenhendler, T. Witting, R. Gebhardt, U. Helbig, A. Dotsenko, Y.-Y. Chang, J. Dreyer, T. Toncian, U. Schramm

Optics Express 33 (2025) 42402-42407

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A3-P-2025.01

Second-harmonic generation in OP-GaAs0.75P0.25 heteroepitaxially grown from the vapor phase

L. Wang, S. R. Vangala, S. Popien, M. Beutler, J. M. Mann, V. L. Tassev, E. Büttner, V. Petrov

CrystEngComm 27 (2025) 1373-1376

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A3-P-2025.02

Diode-pumped Kerr-lens mode-locked Yb:MgWO4 laser

H.-Y. Nie, Z.-L. Lin, P. Loiko, H.-J. Zeng, L. Zhang, Z. Lin, G. Z. Elabedine, X. Mateos, V. Petrov, G. Zhang, W. Chen

Optics Letters 50 (2025) 1049-1052

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A3-P-2025.03

Growth, anisotropy, and spectroscopy of Tm3+ and Yb3+ doped MgWO4 crystals

G. Z. Elabedine, R. M. Solé, S. Slimi, M. Aguiló, F. Díaz, W. Chen, V. Petrov, X. Mateos

CrystEngComm 27 (2025) 1619-1631

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A3-P-2025.04

Growth, structure, spectroscopic, and laser properties of Ho-doped yttrium gallium garnet crystal

S. Slimi, H. Yu, H. Zhang, C. Kränkel, P. Loiko, R. M. Solé, M. Aguiló, F. Díaz, W. Chen, U. Griebner, V. Petrov, X. Mateos

Optics Express 33 (2025) 2529-2541

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A3-P-2025.05

Growth, spectroscopy and laser operation of disordered Tm,Ho:NaGd (MoO4)2 crystal

G. Z. Elabedine, Z. Pan, P. Loiko, H. Chu, D. Li, K. Eremeev, K. Subbotin, S. Pavlov, P. Camy, A. Braud, S. Slimi, R. M. Solé, M. Aguiló, F. Díaz, W. Chen, U. Griebner, V. Petrov, X. Mateos

Journal of Alloys and Compounds 1020 (2025) 179211/1-12

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A3-P-2025.06

Kerr-lens mode-locked, diode-pumped Yb,Gd:YAP laser generating 23 fs pulses

H.-Y. Nie, P. Zhang, P. Loiko, Z.-L. Lin, H.-J. Zeng, G. Zhang, Z. Li, X. Mateos, H.-C. Liang, V. Petrov, Z. Chen, W. Chen

Optics Express 33 (2025) 11793-11799

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A3-P-2025.07

Nanoindentation and laser-induced optical damage tests of CdSe nonlinear crystals

G. Exner, A. Carpenter, K. Cissner, A. Hildenbrand-Dhollande, S. Schmitt, A. Grigorov, M. Piotrowski, S. Guha, V. Petrov

Journal of the Optical Society of America B 42 (2025) A10-A14

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A3-P-2025.08

Phase-matching properties of AgGa(Se1-xTex)2 for SHG of a CO2 laser

K. Kato, V. Petrov, K. Miyata

Proceedings of SPIE 13347 (2025) 133470S/1-4

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A3-P-2025.09

Phase-matching properties of ZnSiAs2 in the mid-IR

T. Okamoto, N. Umemura, K. Kato, V. Petrov

Proceedings of SPIE 13347 (2025) 133470C/1-5

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A3-P-2025.10

Direct generation of 3.5 optical-cycle pulses from a rare-earth laser

N. Zhang, Y. Wang, H. Ding, F. Liang, Y. Zhao, J. Xu, H. Yu, H. Zhang, V. Petrov

Optics Letters 50 (2025) 3150-3153

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A3-P-2025.11

Power scaling of a non-resonant optical parametric oscillator based on periodically poled LiNbO3 with spectral narrowing

S. Das, T. Temel, G. Spindler, A. Schirrmacher, I. B. Divliansky, R. T. Murray, M. Piotrowski, L. Wang, W. Chen, O. Mhibik, V. Petrov

Optics Express 33 (2025) 5662-5669

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A3-P-2025.12

Sub-40-fs diode-pumped ytterbium-doped mixed rare-earth calcium oxoborate laser

H.-J. Zeng, Z.-L. Lin, H. Lin, P. Loiko, L. Zhang, Z. Lin, H.-C. Liang, X. Mateos, V. Petrov, G. Zhang, W. Chen

Optics Express 33 (2025) 17965-17975

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A3-P-2025.13

Spectroscopy and SESAM mode-locking of a disordered Yb:Gd2SrAl2O7 crystal

H.-J. Zeng, Z.-L. Lin, P. Loiko, F. Yuan, G. Zhang, Z. Lin, X. Mateos, V. Petrov, W. Chen

Optics Express 33 (2025) 15057-15066

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A3-P-2025.14

Watt-level, 1.6 ps χ(2)-lens mode-locking of an in-band pumped Nd:LuVO4 laser

H. Iliev, V. Aleksandrov, V. Petrov, L. S. Petrov, H. Zhang, H. Yu, I. Buchvarov

Optics Express 33 (2025) 17773-17781

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A3-P-2025.15

Refined phase-matching predictions for AgGa1-xInxS2 mixed chalcopyrite crystals

K. Kato, K. Miyata, V. Petrov

Journal of the Optical Society of America B 42 (2025) A6-A9

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