you are completely right, but there is a funny thing about many “green” lasers: it is common for them (including this one) to be infrared lasers in disguise, which pump crystals to achieve shorter wavelengths, in this case green. the infrared wavelengths emitted internally look to usually be closer to 800nm, but it is entirely possible to remove the crystal (and IR filter, if there is one) in even a weaker green laser and have a reasonably bright infrared laser!
of course, there is still a blinding hazard, despite IR not being visible to the eye, beyond perhaps a faint red speck on a surface; even some unmodified cheaper diode-pumped green lasers can leak lots of infrared light through! diode pumping is not a very efficient process, so the strength of the internal laser diode must considerable for an acceptable output of green light. of course, this does mean that if you do want an infrared laser, it’s not the trickiest thing ever.
With that attitude!
you are completely right, but there is a funny thing about many “green” lasers: it is common for them (including this one) to be infrared lasers in disguise, which pump crystals to achieve shorter wavelengths, in this case green. the infrared wavelengths emitted internally look to usually be closer to 800nm, but it is entirely possible to remove the crystal (and IR filter, if there is one) in even a weaker green laser and have a reasonably bright infrared laser!
of course, there is still a blinding hazard, despite IR not being visible to the eye, beyond perhaps a faint red speck on a surface; even some unmodified cheaper diode-pumped green lasers can leak lots of infrared light through! diode pumping is not a very efficient process, so the strength of the internal laser diode must considerable for an acceptable output of green light. of course, this does mean that if you do want an infrared laser, it’s not the trickiest thing ever.
stay safe and have fun!