Abstract

We studied the second harmonic of 1.06μm in 28/0/100 PLZT thin film under the influence of a picosecond electric field. The field is produced by a photoconductive switch. The switch consists of a coplanar stripline circuit on a semiconductive substrates. The circuit includes a narrow central electrode that is sandwiched between two conductive surfaces. The central electrode and one of the conductive surfaces are at high potential. When a 530 nm picosecond pulse pumps the switch, an electrical pulse is produced and creates as it propagates along the transmission line, a field between the central electrode and the electrode originally at high potential. This electrical field is used to induce the second harmonic generation (SHG) in PLZT film. We press a sapphire plate with a PLZT film on the top of the circuit and direct a probe beam (a picosecond pulse at 1060 nm) onto the sample.

© 1992 Optical Society of America