Electric field-excited electron emission from PLZT-X/65/35 ceramics

Modeling Electric Field Induced Effects in PLZT EO Devices

PLZT 8.8-9.5/65/35 electrooptic (EO) devices subject to electric fields on the order of 1 V m μ can become highly scattering and depolarizing as well as exhibit high-order EO effects. We describe a method of modeling EO modulators that encounters for these effects. Utilizing these characteristics in simulating surface electrode devices we compare our model to measurements of a fabricated device...

Influence of the Electric Field on Secondary Electron Emission Yield

We present results of the investigation of secondary electron emission from spherical amorphous carbon grains of 3 to 6 micrometers in diameter affected by a high surface field. In our experiment, we have applied a technique based on levitation of a single charged grain in the quadrupole trap. This grain was charged by an electron beam with an energy tunable up to 10 keV. During this process, t...

Characterization of PLZT Ceramics for Optical Sensor and Actuator Devices

Laser-induced ultrafast electron emission from a field emission tip

We show that a fi eld emission tip electron source that is triggered with a femtosecond laser pulse can generate electron pulses shorter than the laser pulse duration (100  fs). The emission process is sensitive to a power law of the laser intensity, which supports an emission mechanism based on multiphoton absorption followed by over-the-barrier emission. Observed continuous transitions betw...

Field - Free and Field - Stimulated Electron Emission from Solids

Electron irradiation of solids produces a backemission of secondary electrons (energies between 0 and 50 eV) and re ected primaries (energies between 50 eV and that of the incident beam). For insulators, it is shown that an externally applied positive electric eld penetrating into the solid material, energizes electrons generated by the primary irradiation and enables them to travel back to the...