Two-dimensional mapping of electro-optic phase retardation in lithium niobate crystals by digital holography

被引：22
|
作者：
de Angelis, M
De Nicola, S
Finizio, A
Pierattini, G
Ferraro, P
Grilli, S
Paturzo, M
Sansone, L
Alfieri, D
De Natale, P
机构：
[1] CNR, Ist Cibernet, I-80078 Pozzuoli, NA, Italy
[2] Ist Nazl Ott Applicata, I-80078 Pozzuoli, NA, Italy
来源：
OPTICS LETTERS | 2005年 / 30卷 / 13期
关键词：
D O I：
10.1364/OL.30.001671
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate accurate two-dimensional mapping of the phase retardation induced by the electro-optic effect in lithium niobate crystals. Off-axis digital holography is used to investigate congruent z-cut crystals. The spatially resolved optical path difference is interferometrically measured while a linearly rising voltage ramp is applied to the crystal. This procedure provides information on the uniformity of crystals' electro-optic properties and offers the ability to detect the presence of defects that is of fundamental importance for reliable processing of photonic devices. (c) 2005 Optical Society of America.
引用
收藏
页码：1671 / 1673
页数：3
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