Noise in photodetectors (Shot noise)

After my recent post on power and energy meters, I’d like to speak about the different kind of noises that affect a photodetector and how to model them.
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Buying a laser power meter: check-list

Because of the wide range of power and energy meter available on the market, and even more because they tend to be not totally versatile, you need to carefully examine your needs against the capabilities of the instrument you are planning to acquire.
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A short review of laser power and energy measurement devices

The base of laser beam diagnostic is to know how much average power you got. Available off the shelves form different manufacturers are three main type of devices, based either on a photodiode, a thermopile or a pyroelectric detector.
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