Nonlinear optical absorption in Bi3TiNbO9 thin films using Z-scan technique

Bin Yang, Hengzhi Chen, Mingfu Zhang, Feiyan Wang, Kokwai Cheah, Wenwu Cao

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Bi3TiNbO9 (BTN) thin films with layered perovskite structure were fabricated on fused silica by pulsed laser deposition. The XRD pattern revealed that the films are single-phase perovskite and highly (00l) textured. Their fundamental optical constants, such as band gap, linear refractive index, and linear absorption coefficient, were obtained by optical transmittance measurements. The dispersion relation of the refractive index vs. wavelength follows the single electronic oscillator model. The nonlinear optical absorption of the films was investigated by single beam Z-scan method at a wavelength of 800 nm with laser duration of 80 fs. We obtained the nonlinear absorption coefficient β=1.44×10-7 m/W. The results show that the BTN thin films are promising for applications in absorbing-type optical devices.

Original languageEnglish (US)
Pages (from-to)1017-1021
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume96
Issue number4
DOIs
StatePublished - Sep 2009

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Perovskite
Light absorption
Refractive index
Thin films
Wavelength
Optical constants
Opacity
Fused silica
Pulsed laser deposition
Optical devices
Energy gap
Lasers
perovskite

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Chemistry(all)

Cite this

Yang, Bin ; Chen, Hengzhi ; Zhang, Mingfu ; Wang, Feiyan ; Cheah, Kokwai ; Cao, Wenwu. / Nonlinear optical absorption in Bi3TiNbO9 thin films using Z-scan technique. In: Applied Physics A: Materials Science and Processing. 2009 ; Vol. 96, No. 4. pp. 1017-1021.
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Nonlinear optical absorption in Bi3TiNbO9 thin films using Z-scan technique. / Yang, Bin; Chen, Hengzhi; Zhang, Mingfu; Wang, Feiyan; Cheah, Kokwai; Cao, Wenwu.

In: Applied Physics A: Materials Science and Processing, Vol. 96, No. 4, 09.2009, p. 1017-1021.

Research output: Contribution to journalArticle

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AU - Yang, Bin

AU - Chen, Hengzhi

AU - Zhang, Mingfu

AU - Wang, Feiyan

AU - Cheah, Kokwai

AU - Cao, Wenwu

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AB - Bi3TiNbO9 (BTN) thin films with layered perovskite structure were fabricated on fused silica by pulsed laser deposition. The XRD pattern revealed that the films are single-phase perovskite and highly (00l) textured. Their fundamental optical constants, such as band gap, linear refractive index, and linear absorption coefficient, were obtained by optical transmittance measurements. The dispersion relation of the refractive index vs. wavelength follows the single electronic oscillator model. The nonlinear optical absorption of the films was investigated by single beam Z-scan method at a wavelength of 800 nm with laser duration of 80 fs. We obtained the nonlinear absorption coefficient β=1.44×10-7 m/W. The results show that the BTN thin films are promising for applications in absorbing-type optical devices.

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