Electro-optic measurement of the electric-field distributions in coplanar-electrode poled polymers

Abstract

Electric-field distributions in coplanar-electrode configurations are studied experimentally through the hnear electro-optic (EO) measurements in poled EO polymers. Thermoplastic poling of an isotropic guest-host polyimide system was employed to investigate the electrostatic factors determining the field distribution inside the EO polymer. Electrostatic analysis of the field distribution shows that the introduction of a new boundary condition formed by the polymer surface is necessary to account for field distributions measured by the linear EO efFect.PACS number(s): 42.65.Vh, 41.20.Cv, 42.70. Nq, 78.20.Jq

Planar polymeric multilayer structures for electro-optical applications

“…This procedure consists in holding the material close to its T g temperature in an intense electric field and subsequently cooling down to room temperature with the electric field on. NLO characterization was made on the basis of SHG measurements of the material [9][10][11][12][13]. SHG measurements were performed using a Q -switched Nd:YAG laser.…”

Mach-Zehnder Interferometry Measurement of the Elctro-Optic Effect in a Poled Polymer Film

“…This corresponds to the determination of EO coefficients in Eq. (8). We iiidepeiideritly determine the EO coefficients of the poleil polymer film by plotting the intensity ratio as a function of the modulation voltage for p and s-polarized light for the reflection configura.tion.…”

“…A thin film of polymer, approximately 3pm, is spin-coated onto an IT0 glass (reflection) or onto an optical substrate with a 10pm gap CP electrode (transmission) and cured a t an elevated temperature. [8] T h e film is electrically poled at a field strength of 72V/pm a t 220°C. A He-Ne laser was used as the light source and the photodiode W M used for detection, and a linear polarizer arid a half-wave plate combination controls t h e POlarizatiori angle of incident light.…”

Determination of the Pockels tensor component ratio by Mach-Zehnder interferometry in a poled polymer thin film

“…The PP and CP electrode samples are prepared by following a standard procedure. [6][7] [12] For example, the CP sample geometry and the experimental setup for the MZI measurement is shown in Figure 1. A similar MZI is adopted for a PP electrode sample geometry, where the electroded sample serves a one reflection mirror in the interferometer.…”