Injected-charge-driven increase in electro-optic effect of KTN crystals
Author(s) -
Seiji Toyoda,
T. Imai,
Jun Miyazu,
Yuichi Okabe,
Masahiro Ueno,
Junya Kobayashi
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4876237
Subject(s) - dielectric , materials science , electron , charge carrier , optics , condensed matter physics , optoelectronics , physics , quantum mechanics
We report a significant increase in the electro-optic (EO) effect of KTaxNb1-xO3 (KTN) crystals that we achieved by injecting carriers into them. The dielectric constant of KTN was increased approximately twofold by carrier injection. The EO beam scanning performance was effectively improved by the increase in the EO effect resulting from the increased dielectric constant. The estimated densities of the trapped electrons were as small as 5.8 × 1020m-3. The very small quantity of injected electrons greatly affected the dielectric constant and EO effect of the KTN crystals
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