Enhancement of Photorefractive Two-Beam Coupling in KNbO3

Dublin Core

Title

Enhancement of Photorefractive Two-Beam Coupling in KNbO3

Description

A theoretical study has been done to investigate the significant enhancement of the photorefractive and photovoltaic effects of a new co-doped potassium niobate crystal (KNbO3: Fe: Ag) as compared to the result obtained for singly doped potassium niobate crystals. The co-doped Ag impurity enters the K site, rather than the typical Nb site, thus changing the local field in the lattice. It is believed that Fe perturbed by the Ag in the K site is responsible for an enhancement of the linear absorption and photocurrent, as well as for the probable increase in the effective trap density. An enhanced trap density is likely the cause of the increased photorefractive counter-propagating two-beam coupling efficiency.

Creator

Subarna Sarker Rupa, Dr. Yasmeen Haque, Dr. Sushanta Kumar Das

Source

Scirj Volume II, Issue VII, July 2014 Edition

Publisher

Scientific Research Journal (Scirj)
ISSN: 2201-2796

Date

26 Aug 2014

Identifier

http://www.scirj.org/jul-2014-paper.php?rp=P0714157

Citation

Subarna Sarker Rupa, Dr. Yasmeen Haque, Dr. Sushanta Kumar Das , “Enhancement of Photorefractive Two-Beam Coupling in KNbO3 ,” Scientific Research Journal -> Research Library, accessed February 22, 2019, http://scirj.org/rp/items/show/92.

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