Virtual Journal of Laser

Author(s): T. M. Flanagan and J. Goree
Thermal creep flow (TCF) is a flow of gas driven by a temperature gradient along a solid boundary. Here, TCF is demonstrated experimentally in a dusty plasma. Stripes on a glass box are heated by laser beam absorption, leading to both TCF and a thermophoretic force. The design of the experiment allo...
[Phys. Rev. E 80, 046402] Published Tue Oct 13, 2009

Author(s): Eric C. Dykeman, Daryn Benson, K.-T. Tsen, and Otto F. Sankey
We develop a theoretical framework, based on a bond-polarizability model, for simulating the impulsive force experienced on a protein or an assembly of proteins from a pulsed light source by coupling the laser electric field to an atomic distortion. The mechanism is impulsive stimulated Raman scatte...
[Phys. Rev. E 80, 041909] Published Wed Oct 07, 2009

Author(s): Pedro A. Quinto-Su, Kang Y. Lim, and Claus-Dieter Ohl
We study experimentally the dynamics of laser-induced cavitation bubbles created inside a narrow gap. The gap height, h , is varied from 15 to 400 μm and the resulting bubble dynamics is compared to a semiunbounded fluid. The cavitation bubbles are created with pulsed laser light at constant lase...
[Phys. Rev. E 80, 047301] Published Tue Oct 06, 2009

Author(s): Filipe R. N. C. Maia, Tomas Ekeberg, Nicuşor Tîmneanu, David van der Spoel, and Janos Hajdu
X-ray lasers may allow structural studies on single particles and biomolecules without crystalline periodicity in the samples. We examine here the effect of sample dynamics as a source of structural heterogeneity on the resolution of the reconstructed image of a small protein molecule. Structures fr...
[Phys. Rev. E 80, 031905] Published Fri Sep 18, 2009

Author(s): V. I. Geyko, G. M. Fraiman, I. Y. Dodin, and N. J. Fisch
The oscillation-center Hamiltonian is derived for a relativistic electron injected with an arbitrary momentum in a linearly polarized laser pulse propagating in tenuous plasma, assuming that the pulse length is smaller than the plasma wavelength. For hot electrons generated by collisions with ions u...
[Phys. Rev. E 80, 036404] Published Tue Sep 15, 2009

Author(s): Chong-Wai Io and Lin I
We experimentally investigate the multitime scale diffusion and the spatiotemporal behaviors of the degrees of enhancement for the longitudinal and the transverse diffusions in a confined mesoscopic quasi-two-dimensional dusty-plasma liquid sheared by two parallel counterpropagating laser beams. The...
[Phys. Rev. E 80, 036401] Published Fri Sep 04, 2009

Author(s): I. Gatare, M. Sciamanna, M. Nizette, H. Thienpont, and K. Panajotov
We report theoretically on the interplay between polarization switching and bifurcations to nonlinear dynamics in a vertical-cavity surface-emitting laser (VCSEL) subject to orthogonal optical injection. Qualitatively different bifurcation scenarios leading to polarization switching are found and ma...
[Phys. Rev. E 80, 026218] Published Fri Aug 28, 2009

Author(s): H. Erzgräber, S. Wieczorek, and B. Krauskopf
Single-frequency operation or locking in a lateral array of three laser oscillators is studied within the composite-cavity-mode approach. We compute the regions of stable locking, which have a nontrivial shape in the plane of coupling strength versus frequency detuning. The locking regions depend dr...
[Phys. Rev. E 80, 026212] Published Thu Aug 20, 2009

Author(s): Andreas Mandelis, Chi-Hang Kwan, and Anna Matvienko
The technique of modulated luminescence of bones was developed experimentally and theoretically and was subsequently used to interpret measurements performed on the cortical layer of human skull bones. The photophysical theory is based on the optical excitation and decay rate equations of the fluore...
[Phys. Rev. E 80, 021920] Published Wed Aug 19, 2009

Author(s): Steven Henck, Eric Treacy, and Jie Yang
With a device that uses microscopic imaging as the signal detection method for online laser light scattering of solutions driven to flow in a capillary tube, we have found that mixing of a solution with water and vice versa induce large numbers of aggregates in the free flow stream. The degrees of a...
[Phys. Rev. E 80, 026306] Published Tue Aug 18, 2009