Accession Number : ADP006765

Title :   Photoinduced Charge Transport in Optical Damage Resistant LiNbO sub 3:Me (Me = Mg, Zn),

Corporate Author : MOSCOW STATE UNIV (USSR)

Personal Author(s) : Volk, T. R. ; Ivanov, M. A. ; Shchapov, F. Ya. ; Rubinina, N. M.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Photoinduced charge transport in lithium niobates is defined by presence of a iron-like impurity, Fe(2+) being the donor, Fe(3+) - the acceptor of electrons. Two level scheme gives the linear dependence of photoconductivity (that is of inverse response times of photorefraction) on the light intensity. We discuss the influence of Me impurities (Me = Mg,Zn). provided for optical damage resistance in LiNbO3, on photoelectric phenomena. Me impurity affects photoconductivity of LiNbO3 rather than photovoltaic properties. Investigations of charge transport phenomena in LiNbO3 :Me reveal some threshold Me concentrations (5.5 mol.%Mg(3) or 7.7mol.%Zn(4)) which coincide with those in optical measurements.

Descriptors :   *PHOTOCONDUCTIVITY, DAMAGE, ELECTRONS, IMPURITIES, INTENSITY, LIGHT, MEASUREMENT, RESISTANCE, RESPONSE, TRANSPORT, REFRACTION, PHOTOVOLTAIC EFFECT, OPTICAL PHENOMENA, SYMPOSIA.

Subject Categories : Optics
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE