Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures

Albin Antony; P. Poornesh; I. V. Kityk; K. Ozga; Reji Philip; Ganesh Sanjeev; Vikash Chandra Petwal; Vijay Pal Verma; Jishnu Dwivedi

doi:10.1117/12.2516768

Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures

Albin Antony
, P. Poornesh
, I. V. Kityk
, K. Ozga
, Reji Philip
, Ganesh Sanjeev
, Vikash Chandra Petwal
, Vijay Pal Verma
, Jishnu Dwivedi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We report the energetic 8 MeV electron beam induced modification on linear and nonlinear optical process in Mn doped ZnO (MZO) thin films at different irradiation dosage. The modifications incorporated on third order nonlinear optical absorption were studied using Z-Scan technique in both continuous and pulsed laser regime. Open aperture Z-scan measurement indicates that pristine and film treated at 15 kGy electron beam dosages reveals reverse saturable absorption (RSA) mechanism and films treated at 5 kGy, 10 kGy and 20 kGy exhibits saturable absorption (SA) phenomena. The irradiation resulted in a high βeff value of 12.1 ×10 ^-2 cm/W in continuous wave excitation and 5.6×10 ^-4 cm/W for pulsed excitation as compared pristine films. Gaussian deconvolution fitting on room temperature PL spectra shows a quenching of defect centers upon electron beam irradiation. The observed decrement in PL emission intensity for the films treated with energetic electron beam can be probably due to recombination of defect centers and enhanced non radiative defects. The decrease in the energy band gap and increase in the urbach energy of the MZO thin films was observed due to creation of deep energy levels into the band gap. The irradiation treatment resulted in significant changes on the crucial parameters of optical sensing such as limiting threshold and optical clamping. The present study indicates that nonlinear parameters of MZO thin films can be tuned by choosing appropriate electron beam dosage for photonics applications.

Original language	English
Title of host publication	Oxide-Based Materials and Devices X
Editors	David J. Rogers, Ferechteh H. Teherani, David C. Look
Publisher	SPIE
ISBN (Electronic)	9781510624801
DOIs	https://doi.org/10.1117/12.2516768
Publication status	Published - 01-01-2019
Event	Oxide-Based Materials and Devices X 2019 - San Francisco, United States Duration: 03-02-2019 → 07-02-2019

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10919
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Oxide-Based Materials and Devices X 2019
Country/Territory	United States
City	San Francisco
Period	03-02-19 → 07-02-19

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2516768

Cite this

Antony, A., Poornesh, P., Kityk, I. V., Ozga, K., Philip, R., Sanjeev, G., Petwal, V. C., Verma, V. P., & Dwivedi, J. (2019). Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures. In D. J. Rogers, F. H. Teherani, & D. C. Look (Eds.), Oxide-Based Materials and Devices X Article 1091924 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10919). SPIE. https://doi.org/10.1117/12.2516768

@inproceedings{5a57ca5dc03344f488e971c0946a2304,

title = "Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures",

abstract = " We report the energetic 8 MeV electron beam induced modification on linear and nonlinear optical process in Mn doped ZnO (MZO) thin films at different irradiation dosage. The modifications incorporated on third order nonlinear optical absorption were studied using Z-Scan technique in both continuous and pulsed laser regime. Open aperture Z-scan measurement indicates that pristine and film treated at 15 kGy electron beam dosages reveals reverse saturable absorption (RSA) mechanism and films treated at 5 kGy, 10 kGy and 20 kGy exhibits saturable absorption (SA) phenomena. The irradiation resulted in a high βeff value of 12.1 ×10 -2 cm/W in continuous wave excitation and 5.6×10 -4 cm/W for pulsed excitation as compared pristine films. Gaussian deconvolution fitting on room temperature PL spectra shows a quenching of defect centers upon electron beam irradiation. The observed decrement in PL emission intensity for the films treated with energetic electron beam can be probably due to recombination of defect centers and enhanced non radiative defects. The decrease in the energy band gap and increase in the urbach energy of the MZO thin films was observed due to creation of deep energy levels into the band gap. The irradiation treatment resulted in significant changes on the crucial parameters of optical sensing such as limiting threshold and optical clamping. The present study indicates that nonlinear parameters of MZO thin films can be tuned by choosing appropriate electron beam dosage for photonics applications. ",

author = "Albin Antony and P. Poornesh and Kityk, \{I. V.\} and K. Ozga and Reji Philip and Ganesh Sanjeev and Petwal, \{Vikash Chandra\} and Verma, \{Vijay Pal\} and Jishnu Dwivedi",

note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Oxide-Based Materials and Devices X 2019 ; Conference date: 03-02-2019 Through 07-02-2019",

year = "2019",

month = jan,

day = "1",

doi = "10.1117/12.2516768",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Rogers, \{David J.\} and Teherani, \{Ferechteh H.\} and Look, \{David C.\}",

booktitle = "Oxide-Based Materials and Devices X",

address = "United States",

}

Antony, A, Poornesh, P, Kityk, IV, Ozga, K, Philip, R, Sanjeev, G, Petwal, VC, Verma, VP & Dwivedi, J 2019, Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures. in DJ Rogers, FH Teherani & DC Look (eds), Oxide-Based Materials and Devices X., 1091924, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10919, SPIE, Oxide-Based Materials and Devices X 2019, San Francisco, United States, 03-02-19. https://doi.org/10.1117/12.2516768

Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures. / Antony, Albin; Poornesh, P.; Kityk, I. V. et al.
Oxide-Based Materials and Devices X. ed. / David J. Rogers; Ferechteh H. Teherani; David C. Look. SPIE, 2019. 1091924 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10919).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Electron beam induced modifications in third harmonic process of spray coated Mn

T2 - Oxide-Based Materials and Devices X 2019

AU - Antony, Albin

AU - Poornesh, P.

AU - Kityk, I. V.

AU - Ozga, K.

AU - Philip, Reji

AU - Sanjeev, Ganesh

AU - Petwal, Vikash Chandra

AU - Verma, Vijay Pal

AU - Dwivedi, Jishnu

PY - 2019/1/1

Y1 - 2019/1/1

N2 - We report the energetic 8 MeV electron beam induced modification on linear and nonlinear optical process in Mn doped ZnO (MZO) thin films at different irradiation dosage. The modifications incorporated on third order nonlinear optical absorption were studied using Z-Scan technique in both continuous and pulsed laser regime. Open aperture Z-scan measurement indicates that pristine and film treated at 15 kGy electron beam dosages reveals reverse saturable absorption (RSA) mechanism and films treated at 5 kGy, 10 kGy and 20 kGy exhibits saturable absorption (SA) phenomena. The irradiation resulted in a high βeff value of 12.1 ×10 -2 cm/W in continuous wave excitation and 5.6×10 -4 cm/W for pulsed excitation as compared pristine films. Gaussian deconvolution fitting on room temperature PL spectra shows a quenching of defect centers upon electron beam irradiation. The observed decrement in PL emission intensity for the films treated with energetic electron beam can be probably due to recombination of defect centers and enhanced non radiative defects. The decrease in the energy band gap and increase in the urbach energy of the MZO thin films was observed due to creation of deep energy levels into the band gap. The irradiation treatment resulted in significant changes on the crucial parameters of optical sensing such as limiting threshold and optical clamping. The present study indicates that nonlinear parameters of MZO thin films can be tuned by choosing appropriate electron beam dosage for photonics applications.

AB - We report the energetic 8 MeV electron beam induced modification on linear and nonlinear optical process in Mn doped ZnO (MZO) thin films at different irradiation dosage. The modifications incorporated on third order nonlinear optical absorption were studied using Z-Scan technique in both continuous and pulsed laser regime. Open aperture Z-scan measurement indicates that pristine and film treated at 15 kGy electron beam dosages reveals reverse saturable absorption (RSA) mechanism and films treated at 5 kGy, 10 kGy and 20 kGy exhibits saturable absorption (SA) phenomena. The irradiation resulted in a high βeff value of 12.1 ×10 -2 cm/W in continuous wave excitation and 5.6×10 -4 cm/W for pulsed excitation as compared pristine films. Gaussian deconvolution fitting on room temperature PL spectra shows a quenching of defect centers upon electron beam irradiation. The observed decrement in PL emission intensity for the films treated with energetic electron beam can be probably due to recombination of defect centers and enhanced non radiative defects. The decrease in the energy band gap and increase in the urbach energy of the MZO thin films was observed due to creation of deep energy levels into the band gap. The irradiation treatment resulted in significant changes on the crucial parameters of optical sensing such as limiting threshold and optical clamping. The present study indicates that nonlinear parameters of MZO thin films can be tuned by choosing appropriate electron beam dosage for photonics applications.

UR - https://www.scopus.com/pages/publications/85065758927

UR - https://www.scopus.com/pages/publications/85065758927#tab=citedBy

U2 - 10.1117/12.2516768

DO - 10.1117/12.2516768

M3 - Conference contribution

AN - SCOPUS:85065758927

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Oxide-Based Materials and Devices X

A2 - Rogers, David J.

A2 - Teherani, Ferechteh H.

A2 - Look, David C.

PB - SPIE

Y2 - 3 February 2019 through 7 February 2019

ER -

Antony A, Poornesh P, Kityk IV, Ozga K, Philip R, Sanjeev G et al. Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures. In Rogers DJ, Teherani FH, Look DC, editors, Oxide-Based Materials and Devices X. SPIE. 2019. 1091924. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2516768

Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures

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