Reply To: detector view

[Elham Sarbazi]

Hi Arezoo,

Thanks for reaching out to us!

Incoherent Irradiance is the power per area, so it is a function of spatial position on the detector with units Watts/area (e.g, Watts/cm2 as in your screenshot). Radiant Intensity is the power per solid angle, so it is a function of ray’s incident angle upon the detector, with unit Watts/steradians.

If you need to check the distributed power on the detector then coherent/incoherent irradiance metrics seems more relevant. Note that, when computing the incoherent irradiance, OpticStudio adds up the power of each ray that strikes the same pixel without considering the phase of the rays. On the other hand, when obtaining the coherent irradiance, OpticStudio sums the complex amplitude of each ray that strikes the same pixel, keeping track of the real and imaginary parts separately considering the phase of each ray.

You can find these details at the link below (section “Discussion”).
Detector Viewer

Please also refer to section “Comments on coherent data computations” at Detector Rectangle Object  to check the assumptions made by OpticStudio when calculating the coherent irradiance.