0 causing, caused by, or connected with light or sound changing direction or separating when it travels through water, glass, etc.:
a refractive surgeon
The rays fall on the lens, and are bent by the refractive power of the glass.
Powerful lenses are needed to correct severe refractive errors.
Here we restrict ourselves to quantify the strength of the thermal lensing and hence fit a parabola to the refractive index profiles.
However, at the intensity maxima, the self-focusing effect is masked by the saturation effect of the nonlinear refractive index.
These are mica flakes 0.5pm thick, 5-20pm diameter, coated with titanium dioxide to raise their refractive index.
These results investigate various illustrations given for the refractive index, power threshold, and self-focusing lengths as a function of laser intensity and density.
The second acoustic mode, with a phase velocity less than the thermal velocity, is found to be evanescent (refractive index purely imaginary).
