Spatial-chirp compensation in dynamical holograms reconstructed with ultrafast lasers

Martínez-León, Lluís; Clemente, Pere; Tajahuerce, Enrique; Mínguez-Vega, Gladys; Mendoza-Yero, Omel; Fernández-Alonso, Mercedes; Lancis, Jesús; Climent, Vicent; Andrés, Pedro
January 2009
Applied Physics Letters;1/5/2009, Vol. 94 Issue 1, p011104
Academic Journal
A computer generated hologram (CGH) reconstructed with a sub-100-fs laser pulse at the focal plane of a conventional refractive lens experiences a large amount of spatial chirp. We report the shaping of a 12 fs laser pulsed beam by means of a Fourier CGH implemented onto a spatial light modulator, using a hybrid diffractive-refractive lens triplet that provides spatial-chirp compensation. Experimental results demonstrate that parallel, arbitrary, and high-resolution patterning is possible with the proposed device.


Related Articles

  • Independent control over the amplitude, phase, and polarization of femtosecond pulses. Plewicki, M.; Weber, S.M.; Weise, F.; Lindinger, A. // Applied Physics B: Lasers & Optics;Jan2007, Vol. 86 Issue 2, p259 

    We introduce a shaper setup which takes advantage of laser pulses passing through a spatial light modulator twice, thereby effectively utilizing a four-liquid crystal mask configuration. This approach grants control not only over the phase and polarization but also the amplitude. The Jones...

  • Spatial optimization of filaments. Walter, D.; Eyring, S.; Lohbreier, J.; Spitzenpfeil, R.; Spielmann, C. // Applied Physics B: Lasers & Optics;Jul2007, Vol. 88 Issue 2, p175 

    We demonstrate the spatial homogenization of intense laser pulses by adaptive minimization of spatial chirp of the spectrally broadened output pulses of a filament. A liquid-crystal-based two-dimensional spatial light modulator is used to control the spatial phase of the driver pulse. An...

  • Femtosecond pulses leave thermal footprints. Wallace, John // Laser Focus World;Jan2007, Vol. 43 Issue 1, p34 

    The article provides information on the underlying physical mechanisms of femtosecond laser pulses. In this connection, there are many groups that have adopted the technique to manufacture optical waveguides. The fabrication process is often substandard for several contemplated commercial...

  • Extending Femtosecond Filamentation of High Power Laser Propagating in the Atmosphere. Eisenmann, Shmuel; Sivan, Yonatan; Fibich, Gadi; Zigler, Arie // AIP Conference Proceedings;7/15/2008, Vol. 1024 Issue 1, p257 

    We show experimentally for ultrashort laser pulses propagating in air, that the filamentation distance of intense laser pulses in the atmosphere can be extended and controlled with a simple double-lens setup. Using this method we were able to achieve a 20-fold delay of the filamentation distance...

  • Multiplex frequency conversion of femtosecond laser pulses in trefoil and quatrefoil channels of a holey fiber. Ji, L.; Lu, P.; Dai, N.; Zhang, J.; Yang, Z.; Li, Y.; Chen, W.; Jiang, Z.; Li, J. // Applied Physics B: Lasers & Optics;May2008, Vol. 91 Issue 2, p295 

    We report that trefoil and quatrefoil silica channels with sizes ranging from 0.6 μm to as large as 4–5 μm in a holey fiber can strongly confine the light field and act as highly nonlinear waveguides. Supercontinuum emissions, efficient dispersive-wave generation and parametric...

  • Observation of filamentation-induced continuous self-frequency down shift in air. Chen, Y.; Théberge, F.; Marceau, C.; Xu, H.; Aközbek, N.; Kosareva, O.; Chin, S. L. // Applied Physics B: Lasers & Optics;May2008, Vol. 91 Issue 2, p219 

    We observed a new filamentation nonlinear process: continuous self-frequency down shift inside the filament zone during the propagation of a femtosecond laser pulse in air. The frequency shift depends strongly on the length of the self-guided column (filament).

  • Multifilamentation of femtosecond laser pulses propagating in turbulent air near the ground. Spindler, G.; Paunescu, G. // Applied Physics B: Lasers & Optics;Jul2009, Vol. 96 Issue 1, p185 

    The propagation of femtosecond laser pulses in turbulent air near the ground is analyzed. Confining to a power regime distinctly above the critical power for self-focusing, i.e. P≈100 Pcr, and concentrating on initial peak intensities around 2.5×1011W/cm2, the onset and early evolution...

  • Multifilamentation of femtosecond laser pulses induced by small-scale air turbulence. Paunescu, G.; Spindler, G.; Riede, W.; Schröder, H.; Giesen, A. // Applied Physics B: Lasers & Optics;Jul2009, Vol. 96 Issue 1, p175 

    We report on experimental and numerical investigations of femtosecond pulse propagation locally disturbed by the turbulent flow field of a hot-air blower. The experiments show that turbulence may shorten the collapse/filamentation distance and induce the onset of multiple filaments. This is...

  • Pulse shaping and diffraction properties of multi-layers reflection volume holographic gratings. Yan, A.; Liu, L.; Wang, L.; Liu, D.; Sun, J.; Wan, L. // Applied Physics B: Lasers & Optics;Jul2009, Vol. 96 Issue 1, p71 

    The multi-layers coupled-wave theory is extended to systematically investigate the pulse shaping and diffraction properties of a system of multi-layers reflection volume holographic gratings (MRVHG) under ultrashort laser pulse (ULP) readout. The combined effects that the grating parameters such...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics