4 ms·
It looks like that this solution corrects for dispersion in group velocity [1], but it's unclear that it can correct for dispersion in phase velocity at the sam
by steerablesafe 5y ago
It looks like that this solution corrects for dispersion in group velocity [1], but it's unclear that it can correct for dispersion in phase velocity at the same time [2]. My intuition that the latter is not possible this way, but optics is not my field.
Correcting for dispersion in group velocity seem to have applications in pulsed-laser experimental setups (as presented), but correcting for dispersion in phase velocity would be required for correcting for the more conventional chromatic aberration people are familiar with in photography.
[1] https://en.wikipedia.org/wiki/Group_velocity https://en.wikipedia.org/wiki/Group_velocity
[2] https://en.wikipedia.org/wiki/Phase_velocity https://en.wikipedia.org/wiki/Phase_velocity
- beervirus 5y agoIsn’t group velocity (transmission speed) what you want to fix for chromatic aberration issues?
- steerablesafe 5y ago> For light, refraction follows Snell's law, which states that, for a given pair of media, the ratio of the sines of the angle of incidence θ1 and angle of refraction θ2 is equal to the ratio of phase velocities (v1 / v2) in the two media, or equivalently, to the indices of refraction (n2 / n1) of the two media. [1] https://en.wikipedia.org/wiki/Refraction https://en.wikipedia.org/wiki/Refraction
- beervirus 5y agoHuh, ok. I stand corrected.