3 research outputs found
Focusing and Diffraction of Light by Periodic Si Micropyramidal Arrays
This research was devoted to modeling of the optical properties of Si
micropyramids aimed at designing optimal structures for applications as light
concentrators in mid-wave infrared (MWIR) focal place arrays (FPAs). It is
shown that completely different optical properties of such structures can be
realized using two types of boundary conditions (BCs): i) periodical and ii)
perfectly matched layer. The first type (periodical BC) allowed us to describe
the Talbot effect under plane wave coherent illumination conditions. This
effect was experimentally demonstrated in the proposed structures. The second
type (perfectly matched layer BC) allows describing the optical properties of
individual micropyramids concentrating or focusing light on the photodetector.
The optimal geometries of micropyramids required for maximizing the intensity
of photonic nanojets emerging from their truncated tips are determined.Comment: 4 pages, 5 figures, GOMACTech 202
Focusing and Diffraction of Light by Periodic Si Micropyramidal Arrays
This research was devoted to modeling of the optical properties of Si micropyramids aimed at designing optimal structures for applications as light concentrators in mid-wave infrared (MWIR) focal place arrays (FPAs). It is shown that completely different optical properties of such structures can be realized using two types of boundary conditions (BCs): i) periodical and ii) perfectly matched layer. The first type (periodical BC) allowed us to describe the Talbot effect under plane wave coherent illumination conditions. This effect was experimentally demonstrated in the proposed structures. The second type (perfectly matched layer BC) allows describing the optical properties of individual micropyramids concentrating or focusing light on the photodetector. The optimal geometries of micropyramids required for maximizing the intensity of photonic nanojets emerging from their truncated tips are determined