中国物理B ›› 2013, Vol. 22 ›› Issue (11): 117802-117802.doi: 10.1088/1674-1056/22/11/117802

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Nonlinear optical characterization of phosphate glasses based on ZnO using the Z-scan technique

Masoumeh Shokati Mojdehia, Wan Mahmood Mat Yunusa, Khor Shing Fhanb, Zainal Abidin Taliba, N. Tamcheka   

  1. a Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;
    b School of Electrical Systems Engineering, Universiti Malaysia Perlis, Campus Pauh Putra, 02600 Arau, Perlis Malaysia
  • 收稿日期:2013-03-27 修回日期:2013-06-07 出版日期:2013-09-28 发布日期:2013-09-28
  • 基金资助:
    Project supported by the Ministry of Higher Education (Grant Nos. 1-11-08-664FR/F1 and 01-0410-861FR).

Nonlinear optical characterization of phosphate glasses based on ZnO using the Z-scan technique

Masoumeh Shokati Mojdehia, Wan Mahmood Mat Yunusa, Khor Shing Fhanb, Zainal Abidin Taliba, N. Tamcheka   

  1. a Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;
    b School of Electrical Systems Engineering, Universiti Malaysia Perlis, Campus Pauh Putra, 02600 Arau, Perlis Malaysia
  • Received:2013-03-27 Revised:2013-06-07 Online:2013-09-28 Published:2013-09-28
  • Contact: Masoumeh Shokati Mojdehi E-mail:masoumehshokati@yahoo.com
  • Supported by:
    Project supported by the Ministry of Higher Education (Grant Nos. 1-11-08-664FR/F1 and 01-0410-861FR).

摘要: The nonlinear optical properties of a phosphate vitreous system [(ZnO)x-(MgO)30-x-(P2 O5)70], where x=8, 10, 15, 18, and 20 mol% synthesized through the melt-quenching technique have been investigated by using the Z-scan technique. In the experiment, a continuous-wave laser with a wavelength of 405 nm was utilized to determine the sign and value of the nonlinear refractive (NLR) index and the absorption coefficient with closed and opened apertures of the Z-scan setup. The NLR index was found to increase with the ZnO concentration in the glass samples by an order of 10-10 cm2·W-1. The real and imaginary parts of the third-order nonlinear susceptibility were calculated by referring to the NLR index (n2) and absorption coefficient (β) of the samples. The value of the third-order nonlinear susceptibility was presented by nonlinear refractive or absorptive behavior of phosphate glasses for proper utilization in nonlinear optical devices. Based on the measurement, the positive sign of the NLR index shows a self-focusing phenomenon. The figures of merit for each sample were calculated to judge the potential of phosphate glasses for application in optical switching.

关键词: Z-scan technique, nonlinear refractive index, nonlinear absorption coefficient, phosphate glasses

Abstract: The nonlinear optical properties of a phosphate vitreous system [(ZnO)x-(MgO)30-x-(P2O5)70], where x=8, 10, 15, 18, and 20 mol% synthesized through the melt-quenching technique have been investigated by using the Z-scan technique. In the experiment, a continuous-wave laser with a wavelength of 405 nm was utilized to determine the sign and value of the nonlinear refractive (NLR) index and the absorption coefficient with closed and opened apertures of the Z-scan setup. The NLR index was found to increase with the ZnO concentration in the glass samples by an order of 10-10 cm2·W-1. The real and imaginary parts of the third-order nonlinear susceptibility were calculated by referring to the NLR index (n2) and absorption coefficient (β) of the samples. The value of the third-order nonlinear susceptibility was presented by nonlinear refractive or absorptive behavior of phosphate glasses for proper utilization in nonlinear optical devices. Based on the measurement, the positive sign of the NLR index shows a self-focusing phenomenon. The figures of merit for each sample were calculated to judge the potential of phosphate glasses for application in optical switching.

Key words: Z-scan technique, nonlinear refractive index, nonlinear absorption coefficient, phosphate glasses

中图分类号:  (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

  • 78.20.Ci
78.20.Mg (Photorefractive effects)