Self-emission and enhancement of laser-induced emission of electrons from ferroelectrics

被引：0
|
作者：
Geissler, K.K. [1 ]
Meineke, A. [1 ]
Riege, H. [1 ]
Handerek, J. [1 ]
机构：
[1] CERN, Geneva, Switzerland
来源：
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 1994年 / A340卷 / 01期
关键词：
Ceramic materials - Electric charge - Electric field effects - Electron energy levels - Ferroelectric materials - Laser applications - Laser beam effects - Laser pulses - Polarization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report on laser-induced electron emission (LIEE) from ferroelectrics (FE) at 266, 355 and 532 nm wavelength. The self-emission of charges up to 20 nC/cm2 with kinetic energies up to several keV was observed with PLZT ceramics at laser-pulse energy densities of 13 mJ/cm2 and a pulse width of 5 ns FWHM after high-voltage-induced polarization switching. The driving electric field is generated by the laser-induced change of the spontaneous polarization in a time scale of 1 ns. The dependence of the emission on the laser-pulse energy density is shown and the relation between the enhancement of LIEE and the laser-induced self-emission is discussed.
引用
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页码：96 / 101
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