Heavy noble gas (Kr, Xe) irradiated (111)InP nanoporous honeycomb membranes with enhanced ultrafast all-optical terahertz emission

Authors

Krunal Radhanpura, University of WollongongFollow
Stuart Hargreaves, University of WollongongFollow
Roger A. Lewis, University of WollongongFollow
L Sirbu, Academy of Sciences, Moldova
Ion M. Tiginyanu, Technical University of Moldova

RIS ID

34185

Publication Details

Radhanpura, K., Hargreaves, S., Lewis, R. A., Sirbu, L. & Tiginyanu, I. M. (2010). Heavy noble gas (Kr, Xe) irradiated (111)InP nanoporous honeycomb membranes with enhanced ultrafast all-optical terahertz emission. Applied Physics Letters, 97 (18), 181921-1-181921-3.

Abstract

Nanoporous honeycomb membranes on InP (111) surfaces emit ultrafast coherent terahertz pulses under near-infrared optical excitation. Irradiating the membranes with heavy noble gas Kr or Xe ions enhances the terahertz emission. The emission does not vary with in-plane magnetic field rotation and exhibits three-cycle dependence on azimuthal-angle rotation. Both suggest the terahertz source is not transient currents but optical rectification enhanced by the heavy-ion irradiation.