I have a question regarding the expected light power at the output port of an integrating sphere.
What light power can be expected at the output port of an integrating sphere when a fiber laser with 450nm and 1mW power is coupled in (without considering the coupling losses of the fibers). Can anyone tell me the approximate power to expect for a 100mm or 150mm sphere with a BaSO4 (97% reflectance) and or PTFE coating (99% reflectance)?
Many thanks
Dear Daniel Schneider ,
please have, for example, a look at the section
'Total exit irradiance'
of:
https://en.wikipedia.org/wiki/Integrating_sphere
There is a formula presenting the exit irradiance E as a function of
a) the input flux, b) the radius and c) the reflectivity ...
You may also have a look at the original reference of that formula (ref. 6) therein....
In the special case of your fiber optic input you may 'go through' the follwing pdf:
https://www.labsphere.com/wp-content/uploads/2021/09/Integrating-Sphere-Theory-and-Applications.pdf
Best regards
G.M.
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