INTENSE LASER-INDUCED SELF-EMISSION OF ELECTRONS FROM FERROELECTRICS

被引：13

作者：

GEISSLER, K ^{[1
]}

MEINEKE, A ^{[1
]}

RIEGE, H ^{[1
]}

SCHMIDT, K ^{[1
]}

HANDEREK, J ^{[1
]}

机构：

[1] SILESIAN UNIV,INST PHYS,PL-40007 KATOWICE,POLAND

来源：

PHYSICS LETTERS A | 1993年 / 176卷 / 05期

关键词：

D O I：

10.1016/0375-9601(93)90938-V

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on laser-induced electron emission (LIEE) from ferroelectrics (FE) at 266, 355 and 532 nm wavelength without any extraction voltage. Emitted charges of up to 4 nC/cm2 with kinetic energies of up to 10 keV, currents exceeding 100 mA, and emitted current densities of several A/cm2 were observed with PLZT ceramics at laser pulse energies of 1 to 2 mJ (10(6) W/CM2) and a pulse width of 5 ns FWHM. The driving electric field is generated by the switching of the spontaneous FE polarization P(s) in a thin surface layer at the time scale of 1 ns. The extraction-field-free emission can be maintained at a constant level, when the polarization switching of the FE cathode is regularly repeated. Reliable long-term LIEE operation of FE cathodes, emitting nC electron charges, has been demonstrated.

引用

页码：387 / 392

页数：6

共 13 条

[1]

BOIMOND D, 1992, CLIC182 NOT

[2]

BOIMOND D, 1992, CERNAT9235 DI

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