Thorlabs S121C - Standard Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW.
One unit from 2009. One from 2011.
This unit has a neutral density filter, instead of the frosted glass look like window.
Working properly.
Thorlabs S121C - Standard Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW.
One unit from 2009. One from 2011.
This unit has a neutral density filter, instead of the frosted glass look like window.
Working properly.