Physicochemical properties of cesium tetroxalate dihydrate single crystal: An efficient material for nonlinear optical applications

被引：17

作者：

Hegde, Tejaswi Ashok ^{[1
]}

Dutta, Atanu ^{[1
]}

Jauhar, RO. MU. ^{[1
]}

Karuppasamy, P. ^{[2
]}

Pandian, M. Senthil ^{[2
]}

Abith, M. ^{[3
]}

Girisun, T. C. Sabari ^{[3
]}

Vinitha, G. ^{[1
]}

机构：

[1] Vellore Inst Technol, Sch Adv Sci, Div Phys, Chennai 600127, Tamil Nadu, India

[2] SSN Coll Engn, SSN Res Ctr, Chennai 603110, Tamil Nadu, India

[3] Bharathidasan Univ, Sch Phys, Nanophoton Lab, Tiruchirappalli 620024, India

来源：

OPTICAL MATERIALS | 2020年 / 107卷 / 107期

关键词：

Optical materials; Crystal growth; X-ray diffraction; Nonlinear absorption; Z-scan; Optical limiting; Z-SCAN; POTASSIUM TETRAOXALATE; GROWTH; MICROHARDNESS; REFRACTION; FRACTURE; PHOTOCONDUCTIVITY; ABSORPTION; MECHANISM; EMISSION;

D O I：

10.1016/j.optmat.2020.110033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Herein we report the tunable optical limiting property of a metal-organic cesium tetroxalate dihydrate (CTD) complex. Temperature and pH were optimized to be 40 degrees C and 3.5 respectively to grow CTD single crystal using the solvent evaporation method. The compound formation was confirmed by its response to single crystal and powder x-ray diffraction analysis. Thermal, mechanical, dielectric, linear optical, photoconductivity and photoluminescence properties of title crystal are reported. Nonlinear coupling between delocalized pi-electrons of metal-ligand interaction and the oscillating electric field of a laser beam enhanced the nonlinear optical parameters. The third order nonlinear refractive index (n(2)), absorption coefficient (beta) and susceptibility (chi((3))) of CTD complex under continuous-wave laser excitation are found to be (3.26 +/- 0.033) x 10(-8) cm(2) W-1, (10.33 +/- 0.41) x 10(-4) cmW(-1) and (8.98 +/- 0.35) x 10(-5) esu respectively. Variation in two-photon absorption (2PA) coefficient measured under nanosecond pulsed laser excitation of different intensities confirmed the presence of sequential 2PA in CTD complex. The optical limiting threshold was investigated under different intensities were found to vary from (1.09 +/- 0.05) x 10(12) Wm(-2) to (2.49 +/- 0.05) x 10(12) Wm(-2) showing the intensity tunable optical limiting property of CTD material.

引用

页数：15

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