Enhanced non-linear optical response in hybrid GSPN crystals: Structural, optical and dielectric analysis

被引：4

作者：

Khandpekar, M. M. ^{[2
,3
]}

Dongare, S. S. ^{[2
,3
]}

Patil, S. B. ^{[1
]}

Pati, S. P. ^{[4
]}

机构：

[1] KG Karjat Coll ASC, Dept Phys, Karjat 410201, Raigad, India

[2] Birla Coll, Mat Res Lab, Kalyan 421304, India

[3] Univ Bombay, Bombay 400032, Maharashtra, India

[4] Sambalpur Univ, PG Dept Phys, Burla 768019, Orissa, India

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 06期

关键词：

Crystal growth; Structure; Optical; SHG efficiency; Hardness; GAMMA-GLYCINE; GROWTH;

D O I：

10.1016/j.optcom.2010.11.036

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Transparent and well defined crystals of GSPN series have been grown with alpha-glycine in simultaneous presence of two nitrates (NaNO3 and KNO3). Transparent and well defined crystals (22 mm x 13 mm x 5 mm) have been obtained in 3-4 weeks time by slow cooling. Addition of a strong acid (0.5% HCl) during growth is seen to enhance solubility, SHG efficiency by 2.78 times, Meyer's hardness index by 1.7 times and M.P by 42 degrees C of that of GSPN crystals. The SHG efficiency of acid added-GSPN has been found to be more than that of KDP crystal. GSPN is found to crystallize in orthorhombic symmetry and the presence of chemical components/groups has been identified by CHNS. EDAX and NMR analysis. Comparative FTIR and Laser Raman analysis shows the presence of active peaks indicating the molecule with a lack of center of symmetry. The UV spectrum shows existence of wide transparency window suitable for optoelectronic applications with band gap energy of about 5.72 eV. The crystals exhibit linear I-V characteristic followed by switching at 41 V/cm. The dielectric loss was seen to decrease exponentially with applied frequency from 100 Hz to 1 MHz. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1583 / 1588

页数：6

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