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. Applied Physics Letters, (2023)