High gain beam compression in new-generation thin-film x-ray waveguides

Jark, W.; Cedola, A.; Di Fonzo, S.; Fiordelisi, M.; Lagomarsino, S.; Kovalenko, N. V.; Chernov, V. A.
February 2001
Applied Physics Letters;2/26/2001, Vol. 78 Issue 9, p1192
Academic Journal
X-ray waveguides can compress an incident beam for microscopy applications above 8 keV photon energy to sizes smaller than 100 nm in one dimension, a range which is not routinely accessed with other x-ray optics (e.g., Fresnel zone plates). Beryllium, because of its low absorption, is expected to provide the highest intensity gain. Measured gains for a beryllium waveguide of 74 nm thickness exceed values of 100 at 13 and 20 keV photon energy, which is an improvement by an order of magnitude compared to previously reported performances. The same object works also at 8 keV with gain 43. © 2001 American Institute of Physics.


Related Articles

  • Dielectric functions and critical points of Be[sub x]Zn[sub 1-x]Te alloys measured by spectroscopic ellipsometry. Buckley, M. R.; Peiris, F. C.; Maksimov, O.; Muñoz, M.; Tamargo, M. C. // Applied Physics Letters;12/30/2002, Vol. 81 Issue 27, p5156 

    Using a rotating analyzer spectroscopic ellipsometer, we have investigated the complex dielectric function of a series of ternary Be[sub x]Zn[sub 1-x]Te thin films in the energy range between 0.7 and 6.5 eV for alloy concentrations between x=0.0 and x=0.52. After determining the alloy...

  • Metal film's resistance to conductivity limited.  // Design News;6/18/2001, Vol. 57 Issue 12, p24 

    Reports on a study on the resistance of beryllium thin metal films to conductivity. Impact of the application of magnetic field on the resistance of beryllium to conductivity; Basis of the universal standard for limiting a metal film's resistance to conductivity.

  • Electrical characterization of acceptor levels in Be-implanted GaN. Nakano, Yoshitaka; Jimbo, Takashi // Applied Physics Letters;11/18/2002, Vol. 81 Issue 21, p3990 

    We have investigated electrically the acceptor levels that are present in Be-implanted GaN. Slight p-type conductivity was attained in undoped GaN films by Be implantation and subsequent annealing at 1050 °C with a SiO[sub 2] encapsulation layer. Capacitance-frequency measurements showed a...

  • Low loss photoinduced waveguides in rapid thermally annealed films of chalcogenide glasses. Ramachandran, S.; Bishop, S. G. // Applied Physics Letters;1/4/1999, Vol. 74 Issue 1, p13 

    Studies low loss photoinduced waveguides in rapid thermally annealed films of chalcogenide glasses. Superior quality films yielded; Magnitude of photoinduced index changes.

  • Optical waveguide formed by cubic silicon carbide on sapphire substrates. Tang, Xiao; Wongchotigul, Kobchat; Spencer, Michael G. // Applied Physics Letters;3/4/1991, Vol. 58 Issue 9, p917 

    Demonstrates optical confinement in beta silicon carbide (beta-SiC) thin films on sapphire substrate. Performance of measurements on waveguides formed by the mechanical transfer of thin beta-SiC films to sapphire; Technological viability of optoelectronic devices from silicon carbide; Far-field...

  • Time-resolved waveguide modulation of a conjugated polymer. Sinclair, M.; McBranch, D.; Moses, D.; Heeger, A. J. // Applied Physics Letters;12/12/1988, Vol. 53 Issue 24, p2374 

    We present a new pump and probe technique for measuring intensity-dependent refractive indices (n2) of waveguide quality thin films, and we apply it to films of polydiacetylene-(CH2)4OCONHOCOC4H9 (PDA-4BCMU). Just below the exciton absorption band, the real part of n2 is negative with magnitude...

  • Optical properties of low-pressure metalorganic vapor phase epitaxy al[sub x]Ga[1-x]N thin-film... Dogheche, E.; Remiens, D. // Applied Physics Letters;6/28/1999, Vol. 74 Issue 26, p3960 

    Studies the optical properties of low-pressure metalorganic vapor phase epitaxy Al[sub x]Ga[sub 1-x]N thin film waveguides by prism coupling technique. Optical transmission measurements in the ultraviolet-visible-near infrared wavelength range.

  • High-velocity waveguide acoustic modes in solids. Darinskii, A.N.; Weihnacht, M. // Journal of Applied Physics;7/1/2000, Vol. 88 Issue 1, p471 

    Reports that a layered waveguide can support the propagation of nonattenuated acoustic modes of which the phase velocity exceeds the velocity of both the quasitransverse bulk waves in the medium that surrounds the waveguide. High-velocity modes guided by thin layers; Numerical computations.

  • Degenerate four-wave mixing in planar CS2 covered waveguides. Karaguleff, C.; Stegeman, G. I.; Fortenberry, R.; Zanoni, R.; Seaton, C. T. // Applied Physics Letters;4/1/1985, Vol. 46 Issue 7, p621 

    Degenerate four-wave mixing in a thin-film waveguide is demonstrated for the first time. A reflectivity of 10-9 at a power density of 5 MW/cm2 was obtained for liquid CS2 placed on top of a glass waveguide.


Read the Article


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

Try another library?
Sign out of this library

Other Topics