A pulsed optical absorption spectroscopy study of wide band-gap optical materials / Ogorodnikov I. N.,Kiseleva M. S.,Yakovlev V. Yu. // OPTICAL MATERIALS. - 2012. - V. 34, l. 12, SI. - P. 2030-2034.

ISSN/EISSN:

0925-3467 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The paper presents the results of a study on the formation and evolution of short-lived radiation-induced defects in wide band-gap optical materials with the mobile cations. The spectra and decay kinetics of transient optical absorption (TOA) of radiation defects in crystals of potassium and ammonium dihydro phosphates (KH2PO4 and NH4H2PO4) were studied by means of the method of pulsed optical absorption spectroscopy with the nanosecond time resolution under excitation with an electron-beam (250 keV, 10 ns). A model of electron tunneling between the electron and hole centers under conditions of the thermally stimulated mobility of one of the recombination process partners was developed. The model describes all the features of the induced optical density relaxation kinetics observed in nonlinear optical crystals KH2PO4 and NH4H2PO4 in a broad decay-time range of 10 ns-10 s after the pulse of radiation exposure. The paper discusses the origin of radiation defects that determine the TOA, as well as the dependence of the decay kinetics of the TOA on the temperature, excitation power and other experimental conditions. (C) 2012 Elsevier B.V. All rights reserved.

Author keywords:

Spectroscopy with time resolution; Luminescent materials; Transient optical absorption; Decay kinetics POTASSIUM DIHYDROGEN PHOSPHATE; RESOLVED LUMINESCENCE SPECTROSCOPY; SELF-TRAPPED EXCITONS; KH2PO4 CRYSTALS; NH4H2PO4 CRYSTALS; ADP NH4H2PO4; KDP KH2PO4; IDENTIFICATION; CONDUCTION; AMMONIUM

DOI:

10.1016/j.optmat.2012.03.010

Web of Science ID:

ISI:000309316400016

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT
Note	3rd International Workshop on Advanced Spectroscopy and Optical Materials (IWASOM), Univ Gdansk, Inst Expt Phys, Gdansk, POLAND, JUL 17-22, 2011
Organization	Polish Acad Sci Warsaw, Inst Phys; Polish Phys Soc; Branch Gdansk; Gdansk Univ, Fdn Dev
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	POTASSIUM DIHYDROGEN PHOSPHATE; RESOLVED LUMINESCENCE SPECTROSCOPY; SELF-TRAPPED EXCITONS; KH2PO4 CRYSTALS; NH4H2PO4 CRYSTALS; ADP NH4H2PO4; KDP KH2PO4; IDENTIFICATION; CONDUCTION; AMMONIUM
Research-Areas	Materials Science; Optics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Optics
Author-Email	i.n.ogorodnikov@gmail.com
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011 Yakovlev, Victor/P-4197-2015
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Number-of-Cited-References	21
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	18
Journal-ISO	Opt. Mater.
Doc-Delivery-Number	013PD