pucho, the 532nm laser is a diode pumped solid state laser that uses a 808nm infrared laser diode to pump two crystals that are very sensitive to temperature change. In a pointer, the 532nm laser is very erratic in its output power. I built one of these from scratch for my daughter for Christmas which you can see on my albums in my profile. It is not a pointer, but is portable and runs on a single 18650 battery. It contains a fan and the output transistor of the driver is heat sinked with a large copper heat sink. The heat sink for the laser diode is sinked to a large heat sink that is also sinked to the case which is made of aluminum. It is very small, but is also very stable. You should go to my profile and look at it there. Now, I could measure your pointer, but since the Radiant and the LaserBee both use a TEC thermopile, they smooth out the variations of the pointer to some extent. To get an accurate reading you need an Ophir LPM which uses a different type of thermopile and reacts more quickly to changes in the output power. I posted an output of the power on my build for 3 minutes and you can see how stable the reading is over that amount of time. I hope that helps.