OPTICAL-PROPERTIES OF REDUCED LITHIUM-NIOBATE SINGLE-CRYSTALS

被引：157

作者：

DHAR, A

MANSINGH, A

机构：

[1] NATL PHYS LAB, NEW DELHI 110012, INDIA

[2] UNIV DELHI, DEPT PHYS & ASTROPHYS, DELHI 110007, INDIA

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 68卷 / 11期

关键词：

D O I：

10.1063/1.346951

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optical transmission of LiNbO3 single crystals has been measured in the wavelength range 200-900 nm, for different degrees of reduction, to study the effect of reduction on the optical characteristics of LiNbO 3 near the fundamental absorption edge. The optical transitions in LiNbO3 were found to be indirect and the band gap decreased with increasing degree of reduction. The band observed at 2.48 eV in the absorption spectrum in heavily reduced samples has been attributed to the formation of polarons, and the theoretical model of Reik and Heese [J. Chem. Solids 28, 581 (1967)] for small polarons is used to correlate the optical and electrical properties.

引用

页码：5804 / 5809

页数：6

共 33 条

[1] IMPROVED ELECTROOPTIC MATERIALS AND FIXING TECHNIQUES FOR HOLOGRAPHIC RECORDING
AMODEI, JJ
STAEBLER, DL
PHILLIPS, W
[J]. APPLIED OPTICS, 1972, 11 (02): : 390 - &
[2] DEFECTS INDUCED IN PURE AND DOPED LINBO3 BY IRRADIATION AND THERMAL REDUCTION
ARIZMENDI, L
CABRERA, JM
AGULLOLOPEZ, F
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (03): : 515 - 529
[3] OPTICALLY-INDUCED REFRACTIVE INDEX INHOMOGENEITIES IN LINBO3 AND LITAO3 - (FERROELECTRIC MATERIALS - NONLINEAR OPTICS - E)
ASHKIN, A
BOYD, GD
DZIEDZIC, JM
SMITH, RG
BALLMAN, AA
LEVINSTEIN, JJ
NASSAU, K
[J]. APPLIED PHYSICS LETTERS, 1966, 9 (01) : 72 - +
[4] BEBALAEV KG, 1978, FIZ TVERD TELA, V20, P1458
[5] ORIGIN OF PHOTOELECTRONS AND CONCENTRATION OF POINT-DEFECTS IN LINBO3 CRYSTALS
BOLLMANN, W
[J]. PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 40 (01): : 83 - 91
[6] DISORDER OF LINBO3 CRYSTALS
BOLLMANN, W
GERNAND, M
[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1972, 9 (01): : 301 - +
[7] ELECTRONIC-STRUCTURE AND OPTICAL INDEX DAMAGE OF IRON-DOPED LITHIUM-NIOBATE
CLARK, MG
DISALVO, FJ
GLASS, AM
PETERSON, GE
[J]. JOURNAL OF CHEMICAL PHYSICS, 1973, 59 (12) : 6209 - 6219
[8] POLARONIC HOPPING CONDUCTION IN REDUCED LITHIUM-NIOBATE SINGLE-CRYSTALS
DHAR, A
MANSINGH, A
[J]. PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1990, 61 (06): : 1033 - 1042
[9] DHAR A, 1987, THESIS U DELHI
[10] LOW-TEMPERATURE BEHAVIOR OF SPONTANEOUS POLARIZATION IN LINBO3 AND LITAO3
GLASS, AM
LINES, ME
[J]. PHYSICAL REVIEW B, 1976, 13 (01) : 180 - 191

← 1 2 3 4 →