Title :
Decay behaviour of second-order nonlinearity in GeO2-SiO 2 glass poled with UV-irradiation
Author :
Fujiwara, Toshihito ; Takahashi, Masaharu ; Ikushima, A.J.
Author_Institution :
Frontier Mater. Lab., Toyota Technol. Inst., Nagoya
fDate :
5/22/1997 12:00:00 AM
Abstract :
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
Keywords :
germanate glasses; optical glass; optical harmonic generation; 200 to 500 C; Arrhenius plot; GeO2-SiO2; GeO2-SiO2 glass; UV irradiation poling; activation energy; decay time constant; elevated temperature; second-harmonic generation; second-order nonlinearity; single-exponential process;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970622
