Title: A Green laser pointer hazard
Description: An inexpensive green laser pointer was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that this infrared emission derives from the design of the pointer, and describe a simple method of testing for infrared emissions using common household items.
Subjects: Semiconductor lasers, Safety measures, Testing, Semiconductor Diodes, Infrared radiation, Light emitting diodes