In fact, this is a problem that some of you may not have even imagined existed. Without knowing it, you might just have a laser/detector combination for which it’s actually not a problem at all.
It really depends on three things: how slow is a “low repetition rate”, how long is the pulse, and what technology your power meter relies on to make accurate measurements.
On the market, you’ll come across various technology options. These tend to be linked to a certain power range so you’ll realize that some applications might be more susceptible to face measurement problems related to low repetition rates than others.