Measurement of the internal electric field in periodically poled congruent lithium niobate crystals by far-field diffraction

被引：3

作者：

Prasath, Ragothaman K. ^{[1
]}

Rajan, Indumathi Ravi ^{[1
]}

Madhupriya, G. ^{[1
]}

Meerasha, Mubarak Ali ^{[1
]}

Boomadevi, Shanmugam ^{[2
]}

Pandiyan, Krishnamoorthy ^{[1
]}

机构：

[1] SASTRA Deemed Univ, Ctr Nonlinear Sci & Engn CeNSE, Sch Elect & Elect Engn, Thanjavur 613401, Tamil Nadu, India

[2] Natl Inst Technol, Dept Phys, Tiruchirappalli 620015, Tamil Nadu, India

来源：

APPLIED OPTICS | 2021年 / 60卷 / 13期

关键词：

FERROELECTRIC DOMAINS; POLARIZATION REVERSAL; QUALITY EVALUATION; REAL-TIME; LINBO3; TEMPERATURE;

D O I：

10.1364/AO.421735

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple nondestructive diffraction method is introduced to estimate the internal electric field present in the congruent lithium niobate crystal. Due to the presence of an unrelaxed internal field, the as-poled sample acts as an index grating and diffracts the incident light beam. By analyzing the diffraction patterns, we calculated the refractive index difference (Delta n = 1.52 x 10(-4)) between the poled and the unpoled domains, and the duty cycle error of 7.9%. Using the Pockels effect, the internal field E-i present in the periodically poled lithium niobate crystal is estimated to be 2.56 kV/mm. (C) 2021 Optical Society of America

引用

页码：3791 / 3796

页数：6

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