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Search Publications by: Alexana Roshko (Fed)

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Displaying 126 - 150 of 172

Growth morphologies of heteroepitaxial rutile films on sapphire substrates

July 1, 1997
Author(s)
P. A. Morris-Hotsenpiller, Alexana Roshko, J. B. Lowekamp, G. S. Rohrer
The growth morphologies of (1 0 0), (1 0 1) and (0 0 1) rutile films grown on sapphire substrates by the ion-beam sputter deposition technique have been examined as a function of film/substrate orientation, film thickness, substrate surface preparation

Surface resistance and morphology of YBCO films as a function of thickness

June 1, 1997
Author(s)
F. J. Stork, James A. Beall, Alexana Roshko, Donald C. DeGroot, David A. Rudman, Ronald H. Ono, Jerzy Krupka
We have examined the thickness dependence of the growth morphology and surface resistance Rs of laser ablated YBa 2Cu 3O 7-x films with transition temperatures over 89 K and critical current densities greater than 10 6 A/cm2 at 76 K. The thickness was

Passively Q-switched Nd-doped waveguide laser

November 15, 1994
Author(s)
J. A. Aust, K. J. Malone, D. L. Veasey, Norman Sanford, Alexana Roshko
A passively Q-switched waveguide laser operating at 1.054 υm has been demonstrated in a Nd-doped phosphate glass. The channel waveguide was fabricated by K-ion exchange from a nitrate melt. Passively Q-switched pulses were achieved by placement of an