In dependence of the outer temperature, after appr. 5 minutes the red LED lights off, which indicates that the thermostatic device has reached the set temperature and is ready for work.
Nonlinear viscoelastic's ZWT constitutive model which used in aircraft windshield and has a strain rate dependence is written, and ZWT is described point-device, especially, effect in stain rate.
The dependence of optimal notch pump power on concentration of erbium ions, signal power and coupling coefficient of pump light is investigated, which provides theoretic basis for device design.