Ultrafast imaging of transient electronic plasmas produced in conditions of femtosecond waveguide writing in dielectrics

Gawelda, W.; Puerto, D.; Siegel, J.; Ferrer, A.; Ruiz de la Cruz, A.; Fernández, H.; Solis, J.
September 2008
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p121109
Academic Journal
Femtosecond laser-induced plasmas in bulk dielectrics are imaged under waveguide writing conditions, for different polarizations, pulse durations, and processing depths, and their temporal evolution is measured using ultrafast pump-probe microscopy. The irradiation beam profile is elliptically shaped yielding a disklike focal volume. We demonstrate for doped phosphate glass that increasing the pulse duration improves the spatial distribution of deposited energy by minimizing beam filamentation and prefocal depletion effects. As a consequence, energy deposition in the desired volume is greatly enhanced. Our results identify key parameters for optimizing femtosecond laser processing of dielectrics and different strategies to minimize energy loss channels.


Related Articles

  • Wakefield Excitation by a Sequence of Electron Bunches in a Rectangular Waveguide Lined with Dielectric Slabs. Kiselev, V. A.; Linnik, A. F.; Marshall, T. C.; Onishchenko, I. N.; Onishchenko, N. I.; Sotnikov, G. V.; Uskov, V. V. // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p851 

    A rectangular dielectric-lined metallic structure was studied that has an advantage over a cylindrical structure from the possibility of exciting by a sequence of bunches many equally-spaced modes, thereby building up a larger mode-locked wakefield. A rectangular vacuum copper waveguide was...

  • Dissipation loss of mid-infrared radiation in a dielectric waveguide. Averkiev, N. S.; Slipchenko, S. O.; Sokolova, Z. N.; Tarasov, I. S. // Semiconductors;Feb2010, Vol. 44 Issue 2, p243 

    Dissipation loss of electromagnetic radiation with wavelengths of 20–55 μm was theoretically studied in a three-layer planar dielectric insulating waveguide combined with a heterolaser. It was shown that the dependence of the loss on the waveguide layer thickness behaves differently...

  • Charged-particle acceleration and energy loss in laser-produced plasmas. Hicks, D. G.; Li, C. K.; Séguin, F. H.; Ram, A. K.; Frenje, J. A.; Petrasso, R. D.; Soures, J. M.; Glebov, V. Yu.; Meyerhofer, D. D.; Roberts, S.; Sorce, C.; Sto¨ckl, C.; Sangster, T. C.; Phillips, T. W. // Physics of Plasmas;Dec2000, Vol. 7 Issue 12 

    Spectral measurements have been made of charged fusion products produced in deuterium + helium-3 filled targets irradiated by the OMEGA laser system [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. Comparing the energy shifts of four particle types has allowed two distinct physical processes...

  • Dynamics of high-temperature plasma formation during laser irradiation of three-dimensionally structured, low-density matter. Gus�kov, S. Yu.; Koshevoi, M. O.; Rozanov, V. B.; Rupasov, A. A.; Shikanov, A. S.; Kas�yanov, Yu. S. // JETP Letters;10/10/96, Vol. 64 Issue 7, p502 

    Results are presented from an experimental investigation of the properties of the plasma produced by the action of a radiation pulse at the second harmonic of a Nd laser, with average intensity ~5�1014 W/cm2 in the focal spot, on flat targets consisting of porous polypropylene (CH)x with an...

  • Optical Properties of Laser-Produced Plasmas from Cd and Layered Crystalline CdAl[sub 2]Se[sub 4] Targets. Shuaibov, A. K.; Shimon, L. L.; Chuchman, M. P. // Technical Physics;May2001, Vol. 46 Issue 5, p590 

    An experimental investigation into emission by plasmas from Cd and crystalline CdA1[sub 2]Se[sub 4] targets irradiated with a pulse-periodic YAG: Nd[sup 3+] laser is presented. The laser operates at a pulse width of 20 ns and provides 1-2 × 10[sup 9] W/cm² at the focus. The spectral and...

  • Vavilov�Cherenkov effect in a chiral waveguide. Barsukov, K. A.; Smirnova, A. A. // Technical Physics;Mar99, Vol. 44 Issue 3, p328 

    The Vavilov�Cherenkov radiation appearing in a circular regular ideal waveguide with a chiral medium is considered. The features of the emission spectrum excited by a charge moving along the waveguide axis are investigated. Expressions for the energy loss of a moving charge are obtained....

  • Losses in polycrystalline silicon waveguides. Foresi, J.S.; Black, M.R // Applied Physics Letters;4/8/1996, Vol. 68 Issue 15, p2052 

    Measures the losses of polycrystalline silicon waveguides clad by SiO[sub 2] by the cutback method. Magnitude of the losses than reported absorption measurements for polySi; Estimation of the losses of waveguides fabricated from unpolished polySi; Agreement between calculated and measured...

  • Analyses of laser-plasma interactions in National Ignition Facility ignition targets. Hinkel, D. E.; Callahan, D. A.; Langdon, A. B.; Langer, S. H.; Still, C. H.; Williams, E. A. // Physics of Plasmas;May2008, Vol. 15 Issue 5, p056314 

    A capability to analyze laser-plasma interactions (LPI) for ignition targets to be fielded at the National Ignition Facility has been developed and exercised. LPI in these targets may cause direct energy loss (backscatter) or energy redirection (beam spray, deflection, and energy transfer)....

  • Nonequilibrium gyrokinetic fluctuation theory and sampling noise in gyrokinetic particle-in-cell simulations. Krommes, John A. // Physics of Plasmas;Sep2007, Vol. 14 Issue 9, p090501 

    The present state of the theory of fluctuations in gyrokinetic (GK) plasmas and especially its application to sampling noise in GK particle-in-cell (PIC) simulations is reviewed. Topics addressed include the Δf method, the fluctuation-dissipation theorem for both classical and GK many-body...


Read the Article


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

Try another library?
Sign out of this library

Other Topics