Enhanced photostability and optical nonlinearity of nickel and cobalt organometallic complexes

K. B. Manjunatha; Ravindra Rajarao; P. Poornesh; B. J. Rudresha; G. Umesh; B. Ramachandra Bhat

doi:10.1016/j.optmat.2019.01.076

Enhanced photostability and optical nonlinearity of nickel and cobalt organometallic complexes

K. B. Manjunatha^*
, Ravindra Rajarao
, P. Poornesh
, B. J. Rudresha
, G. Umesh
, B. Ramachandra Bhat

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Nonlinear optical and limiting properties of nickel, cobalt metal-organic complexes and ligand (L) {L = N,N′-o-phenylenebis (4-hyrdoxy-salicylideneimine)} were studied using Z-scan technique using Q-switched Nd: YAG laser with nanosecond pulses at 532 nm. The results reveal that metal complexes exhibit large negative nonlinear refractive index (n ₂ ) of the order of 10 ⁻¹¹ esu. The metal complexes displays large nonlinearity than the ligand due to effective charge delocalization between metal ion and ligand. The magnitude of ground state absorption cross section is small compared to the effective excited-state absorption cross section implying the observed nonlinearity is due to reverse saturable absorption. Further, metal-organic complexes exhibit enhanced optical limiting behaviour at nanosecond laser pulses.

Original language	English
Pages (from-to)	494-497
Number of pages	4
Journal	Optical Materials
Volume	89
DOIs	https://doi.org/10.1016/j.optmat.2019.01.076
Publication status	Published - 01-03-2019

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Computer Science
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1016/j.optmat.2019.01.076

Cite this

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title = "Enhanced photostability and optical nonlinearity of nickel and cobalt organometallic complexes",

abstract = " Nonlinear optical and limiting properties of nickel, cobalt metal-organic complexes and ligand (L) \{L = N,N′-o-phenylenebis (4-hyrdoxy-salicylideneimine)\} were studied using Z-scan technique using Q-switched Nd: YAG laser with nanosecond pulses at 532 nm. The results reveal that metal complexes exhibit large negative nonlinear refractive index (n 2 ) of the order of 10 −11 esu. The metal complexes displays large nonlinearity than the ligand due to effective charge delocalization between metal ion and ligand. The magnitude of ground state absorption cross section is small compared to the effective excited-state absorption cross section implying the observed nonlinearity is due to reverse saturable absorption. Further, metal-organic complexes exhibit enhanced optical limiting behaviour at nanosecond laser pulses. ",

author = "Manjunatha, \{K. B.\} and Ravindra Rajarao and P. Poornesh and Rudresha, \{B. J.\} and G. Umesh and \{Ramachandra Bhat\}, B.",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = mar,

day = "1",

doi = "10.1016/j.optmat.2019.01.076",

language = "English",

volume = "89",

pages = "494--497",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Enhanced photostability and optical nonlinearity of nickel and cobalt organometallic complexes

AU - Manjunatha, K. B.

AU - Rajarao, Ravindra

AU - Poornesh, P.

AU - Rudresha, B. J.

AU - Umesh, G.

AU - Ramachandra Bhat, B.

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Nonlinear optical and limiting properties of nickel, cobalt metal-organic complexes and ligand (L) {L = N,N′-o-phenylenebis (4-hyrdoxy-salicylideneimine)} were studied using Z-scan technique using Q-switched Nd: YAG laser with nanosecond pulses at 532 nm. The results reveal that metal complexes exhibit large negative nonlinear refractive index (n 2 ) of the order of 10 −11 esu. The metal complexes displays large nonlinearity than the ligand due to effective charge delocalization between metal ion and ligand. The magnitude of ground state absorption cross section is small compared to the effective excited-state absorption cross section implying the observed nonlinearity is due to reverse saturable absorption. Further, metal-organic complexes exhibit enhanced optical limiting behaviour at nanosecond laser pulses.

AB - Nonlinear optical and limiting properties of nickel, cobalt metal-organic complexes and ligand (L) {L = N,N′-o-phenylenebis (4-hyrdoxy-salicylideneimine)} were studied using Z-scan technique using Q-switched Nd: YAG laser with nanosecond pulses at 532 nm. The results reveal that metal complexes exhibit large negative nonlinear refractive index (n 2 ) of the order of 10 −11 esu. The metal complexes displays large nonlinearity than the ligand due to effective charge delocalization between metal ion and ligand. The magnitude of ground state absorption cross section is small compared to the effective excited-state absorption cross section implying the observed nonlinearity is due to reverse saturable absorption. Further, metal-organic complexes exhibit enhanced optical limiting behaviour at nanosecond laser pulses.

UR - https://www.scopus.com/pages/publications/85061544993

UR - https://www.scopus.com/pages/publications/85061544993#tab=citedBy

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DO - 10.1016/j.optmat.2019.01.076

M3 - Article

AN - SCOPUS:85061544993

SN - 0925-3467

VL - 89

SP - 494

EP - 497

JO - Optical Materials

JF - Optical Materials

ER -

Enhanced photostability and optical nonlinearity of nickel and cobalt organometallic complexes

Abstract

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