1.2 Ultrafast and Ultraprecise Laser Physics and Nonlinear Optics

Project coordinators: M. Schnuerer , G. Steinmeyer , T. Nagy , G. M. Rossi

Temporal self-imaging of arrays of nondiffracting few-cycle wavepackets

Adaptive shaping of structured ultrafast wavepackets is implemented with spatial light modulators and low-dispersion axicons based on MEMS (micro-electro-mechanical systems). Spatio-temporal propagation characteristics are analyzed by spatially resolved nonlinear autocorrelation. Recently, temporal self-imaging of arrays of needle beams (i.e. central lobes of ultrashort-pulsed Bessel beams) was demonstrated for the first time [1]. Figs. 1,2 show the experimental geometry and results.

Fig. 1: Nondiffractive or geometrical Talbot effect as periodical constructive interference behind an array of axicons of (a = period, d = element diameter, θ = half-conical beam angle, schematically). Needle beams and ring-shaped hollow beams appear alternatingly (L0: intensity maxima of first focal zones, L1: first nondiffractive Talbot distance; (L0+L1)/2: hollow beams with dark central regions) [1].

Experiments were performed with pulses from a Ti:sapphire oscillator (Venteon, initial pulse duration 6.6 fs). Arrays of needle beams were shaped by a liquid-crystal-on-silicon (LCoS) spatial light modulator (HoloEye, 1 Mpx). The two-dimensional second-order autocorrelation was detected by an EMCCD camera (iXon, Andor). Illumination was performed at large angles (< 50°) with ellipticity correction. Measurements of the nonlinear autocorrelation at three different distances show only a slight rise of the pulse duration (Fig. 2). After a propagation distance of 195 mm, the self-image in the second nondiffractive Talbot plane has a pulse duration of 8.3 fs which is still related to a sub-3-cycle pulse.

Fig. 2: Temporal self-imaging of few-cycle pulses demonstrated by spatially resolved autocorrelation at nondiffractive Talbot planes behind a hexagonal array of programmed axicons (d = 230 µm, a = 445 µm). Intensity profiles (left) and 2nd order autocorrelation (right) are shown for dark rings at (L0+L1)/2 = 60 mm (a,b), first nondiffractive Talbot distance L1 = 105 mm (c,d), and second nondiffractive Talbot plane L2 = 195 mm (e,f) [1].

Non-diffracting self-imaging allows for (a) generating distant focused undistorted ultrashort pulses well beyond the Rayleigh ranges of single focused pulses, and (b) a periodical pulse refocusing. In contrast to classical space-time focusing schemes, the pulse duration remains largely conserved whereas the intensity is found to be periodically modulated. Nondiffractive self-images of amplitude-modulated wavepackets are generated with angular-dependent time delay between the Talbot planes. Thus, the axial positions of self-images and the time scale of subsequent focusing can be tuned with adaptive axicon arrays. Specific self-imaging effects of arrayed orbital angular momentum pulses are the subject of current investigations [2].

 

Publikationen des MBI

erweiterte Suche
Suchergebnisse

Publikationen von 2025

Sortieren: Jahr Autor Titel Journal
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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

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

URL, DOI oder PDF

A3-P-2025.16
35-fs diode-pumped mode-locked ytterbium-doped multi-component alkaline-earth fluoride laser

Z. Zhang, Z.-Q. Li, P. Loiko, H.-J. Zeng, G. Zhang, Z.-L. Lin, S. Normani, A. Braud, F. Ma, X. Mateos, H.-C. Liang, V. Petrov, D. Jiang, L. Su, W. Chen

Optics Letters 50 (2025) 1835-1838

URL, DOI oder PDF

A3-P-2025.17
Diode-pumped few-optical-cycle laser based on an ytterbium-doped disordered strontium yttrium borate crystal

H. Zeng, Z. Lin, S. Sun, P. Loiko, H. Lin, G. Zhang, Z. Lin, C. Mou, X. Mateos, V. Petrov, W. Chen

Optics Letters 50 (2025) 2203-2206

URL, DOI oder PDF

A3-P-2025.18
Refined Sellmeier and thermo-optic dispersion formulas for CdGeAs2

K. Kato, K. Miyata, V. Petrov

Journal of the Optical Society of America B 42 (2025) A24-A28

URL, DOI oder PDF

A3-P-2025.19
Diode-pumped mode-locked Yb:Ca3La2(BO3)4 laser generating 35 fs pulses

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

Optics Express 33 (2025) 22988-22996

URL, DOI oder PDF

Überblick MBI-Projekte Überblick Themen