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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).
In the case of ducted waves, the plasma inhomogeneity is a refractive waveguide for fast magnetosonic waves.
Spectacle lenses alter eye growth and the refractive status of young monkeys.
The cell width increased very slowly, and the refractive index gradients decreased, but the effects were still observable many days later.
Such a refractive index profile will tend to focus the pulse, preventing the natural diffraction and keeping the laser pulse confined in the channel.
The beam thus creates a refractive index profile across its wavefront corresponding to its own intensity profile and focuses of its own.
Such an effect competes with the usual refractive ones, and plays a crucial role in plasma diagnostics, radio-frequency heating and current drive experiments.
Refractive errors were evaluated during rearing in all subjects.
Consequently, the refractive index is not uniform in that region too.
It is of degree 2 + 3s in the square of the refractive index if s is the number of different particle species.
On all illuminated points of one pattern, the refractive index was a near-maximum, while on the other it was a near-minimum.
