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Decay behaviour of second-order nonlinearity in GeO2-SiO2 glass poled with UV-irradiation

Decay behaviour of second-order nonlinearity in GeO2-SiO2 glass poled with UV-irradiation

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Quantitative decay measurement of the second-harmonic generation (SHG) at various elevated temperatures is reported for a GeO2-SiO2 glass with 15.7 GeO2 mole %, poled with UV-irradiation. It has been observed that the decay behaviour of the induced SHG is a single-exponential process in the temperature range 200–500 °C. From the Arrhenius plot of the decay time-constant, the activation energy of the induced SHG is 0.41 ±0.05 eV, and the decay time-constant at 15°C is ~280 days.

Inspec keywords: optical glass; germanate glasses; optical harmonic generation

Other keywords: Arrhenius plot; single-exponential process; activation energy; second-harmonic generation; GeO2-SiO2; 200 to 500 C; elevated temperature; UV irradiation poling; decay time constant; GeO2-SiO2 glass; second-order nonlinearity

Subjects: Optical glass; Optical harmonic generation, frequency conversion, parametric oscillation and amplification

References

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    2. 2)
      • R.A. Myers , N. Mukherjee , S.R.J. Brueck . Large second-order nonlinearity in poled fused silica. Opt. Lett. , 22 , 1732 - 1734
    3. 3)
      • T. Fujiwara , D. Wong , Y. Zhao , S. Fleming , V. Grishina , S. Poole . UV-excited poling and electrically tunable Bragg gratings in a germanosilicatefibre. Tech. Dig. OFC
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      • T. Fujiwara , M. Takahashi , A.J. Ikushima . Second-harmonic generation in germanosilicate glass poled with UV-irradiation. Appl. Phys. Lett.
    5. 5)
      • P.G. Kazansky , L. Dong , P.St.J. Russell . High second-order nonlinearities in poledsilicate fibres. Opt. Lett. , 10 , 701 - 703
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19970622
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