Nonlinear Absorption and Limiting Behaviour of Monoclinic and Orthorhombic Copper Niobate

N. Priyadarshani; T.C. Sabari Girisun

doi:10.4028/www.scientific.net/AMM.865.20

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 865Nonlinear Absorption and Limiting Behaviour of...

Nonlinear Absorption and Limiting Behaviour of Monoclinic and Orthorhombic Copper Niobate

Abstract:

Monoclinic and orthorhombic phase of copper niobate was prepared by simple solid state reaction (700°C, 900°C for 12 hours). Formation of two polymorphic phases of CuNb₂O₆ was ascertained by XRD and FTIR analysis. FESEM showed the presence of pore networks in both phases. Third-order optical nonlinearity and their limiting behaviour were studied by Z-scan technique using Ti: Sapphire laser (800 nm, 150 fs, 80 MHz). Both phases of copper niobate exhibit reverse saturable absorption. The observed optical limiting action was ascribed due to two-photon absorption process. Monoclinic copper niobate shows almost 100 times stronger nonlinear absorption behaviour than orthorhombic copper niobate due to peculiar distortion of NbO₆octahedra. Monoclinic copper niobate with high two photon absorption coefficient (85x10^-10 m/W) and low limiting threshold (0.21 μJ/cm²) can be a better alternate for benchmark optical limiters like carbon nanotubes.

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Applied Mechanics and Materials (Volume 865)

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20-24

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https://doi.org/10.4028/www.scientific.net/AMM.865.20

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Online since:

June 2017

Authors:

N. Priyadarshani, T.C. Sabari Girisun*

Keywords:

Copper Niobate, Femtosecond, Optical Limiting, Structural Studies

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References

[1] T. R. James, B. Kim, E. Arnold, J. D. Roberto, Nanostructured resection of malignant brain tumors: Beyond the cutting edge, ACS Nano, 8(10) (2014) 9716-9722.

DOI: 10.1021/nn504854a

Google Scholar

[2] B. Rajashekar, S. Limbu, K. Aditya, G. Nageswara Rao, S. Siva Sankara Sai, Azo doped polymer thin films for active and passive power limiting applications, Photochem Photobiol. Sci. 12(10) (2013) 1780-1786.

DOI: 10.1039/c3pp50065a

Google Scholar

[3] M. Harb, D. Masih, K. Takanabe, Screened coulomb hybrid DFT investigation of band gap and optical absorption predictions of CuVO3, CuNbO3 and Cu5Ta11O30 materials, Phys. Chem. Chem. Phys. 16(34) (2014) 18198-18204.

DOI: 10.1039/c4cp02497d

Google Scholar

[4] M. G. B. Drew, R. J. Hobson, V. T. Padayatchy, Synthesis, Structure and Magnetic Properties of Monoclinic CuNb2O6 and the Electronic Spectra of both Polymorphs of CuNb2O6, J. Mater. Chem. 11(1) (1995) 1779-1783.

DOI: 10.1039/jm9950501779

Google Scholar

[5] N. Priyadarshani, T. C. Sabari Girisun, C. Ravidhas, Enhanced electrical behaviour of monoclinic p-CuNb2O6, Mater. Res. Bull. 84 (2016) 39-45.

DOI: 10.1016/j.materresbull.2016.07.027

Google Scholar

[6] R. Sai Santosh Kumar, S. Venugopal Rao, L. Giribabu, D. Narayana Rao, Femtosecond and nanosecond nonlinear optical properties of alkyl phthalocyanines studied using Z-scan technique, Chem. Phys. Lett. 447(4-6) (2007) 274-278.

DOI: 10.1016/j.cplett.2007.09.028

Google Scholar

[7] L. Polavarapu, N. Venkatram, W. Ji, Q. -H. Xu, Optical-Limiting properties of Oleylamine-capped gold nanoparticles for both femtosecond and nanosecond laser pulses, ACS Appl. Mater. Interfaces, 1(10) (2009) 2298-2303.

DOI: 10.1021/am900442u

Google Scholar