Parabolic lens
Collimation and focusing using parabolic lenses
Last updated
Collimation and focusing using parabolic lenses
Last updated
In the examples/parabolic_lens_collimation.py
example, we create a collimated phonon flux by reflecting phonons from a parabolic surface. The figure below illustrates the concept:
We place the parabolic boundary at the bottom and move the hot spot that emits the phonon to y = 300 nm, as shown in the input file:
Note that angle_distribution="uniform"
because we need to emit phonons in all directions evenly. This model produces the following structure, which collimates phonons after reflection from the parabolic boundary:
The parabolic lens can also be inverted and placed at the top as follows
Here, the source is place in the bottom, while parabola at the top.
Singh et al.