However, ironically for him, he is alarmed that many green laser pointers are more powerful than they are supposed to be. Sure, you often want a powerful laser, but if you think a laser is safe ...

The process is only about 48% efficient, meaning that IR leaks out along with the green light. The better quality DPSS laser pointers include a quality IR filter to remove it; cheaper ones often ...

For years, scientists have successfully created tiny, high-quality lasers that emit red ... and advanced optical devices. While green laser pointers have existed for 25 years, their light output ...