Low power CW optical limiting properties of bis(2-aminopyridinium)-succinate-succinic acid (2APS) single crystal

被引：57

作者：

Ramamurthy, N. ^{[1
]}

Dhanuskodi, S. ^{[1
]}

Manjusha, M. V. ^{[2
]}

Philip, J. ^{[2
]}

机构：

[1] Bharathidasan Univ, Sch Phys, Tiruchirappalli 620024, Tamil Nadu, India

[2] Cochin Univ Sci & Technol, Sopisticated Testing & Instrumentat Ctr, Cochin 682022, Kerala, India

来源：

OPTICAL MATERIALS | 2011年 / 33卷 / 04期

关键词：

Organic compounds; Single crystal; Z-scan; Optical limiters; NONLINEARITIES;

D O I：

10.1016/j.optmat.2010.11.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The increase in the usage of low power CW lasers in various applications needs for the design of optical limiters with low thresholds. The optical limiting properties and nonlinear refractive index (n(2) = -2.4189 x 10(-8) cm(2)/W) of transparent organic crystal bis(2-aminopyridinium)-succinate-succinic acid (2APS) single crystal using continuous wave He-Ne laser excitation following Z-scan method have been evaluated. The sample exhibited negative (defocusing) nonlinearity. This thermally induced defocusing nature of 2APS crystal can be used to design the low power optical limiters. As the origin for this nonlinearity is thermal, a complete thermal transport properties such as thermal diffusivity (alpha(s) = 5.97 +/- 0.03 x 10(-3) cm(2)/s), thermal effusivity (e(s) = 1.94 +/- 0.02 x 10(-2) J/cm(2)-K-s(1/2)), thermal conductivity (k(s) = (4.66 +/- 0.04) x 10(-3) W/cm-K)) and specific heat capacity (C-ps = (5.61 +/- 0.05) x 10(-1) J/g-K) of the material were studied following the photopyro electric (PPE) technique. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：607 / 612

页数：6