Sunday, 30 August 2020

experimental physics - Photometer: measured Irradiance L converted to photon rate


I am conducting an experiment in which the power meter reading of $410\,nm$ narrow bandpass stimulus is noted to be 30 $\frac{\mu W}{cm^2}$ at a distance of 1 inch away from the light source.


I wish to convert this to $\frac{\text{photon}}{ cm^{2} s}.$


Can anyone tell me how to do this?




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