Sep 1, 2017 #17 Alaskan 0 Joined Jan 29, 2014 Messages 12,025 Points 113 Yes, I was disappointed when I received my PL520, I expected it to produce a round dot, not!
Sep 2, 2017 #18 Richie89 0 Joined May 9, 2015 Messages 1,181 Points 113 paul1598419 said: No direct diode laser gives TEM00 modes. They don't produce a Gaussian beam. Even single mode diodes have a rectangular emitter that becomes the dot when collimated. Click to expand... Oh I didn't know that. It would make sense. Alaskan said: Yes, I was disappointed when I received my PL520, I expected it to produce a round dot, not! Click to expand... I'll have to take another look at mine, because mine appears to have a nice round dot, but I could be wrong.
paul1598419 said: No direct diode laser gives TEM00 modes. They don't produce a Gaussian beam. Even single mode diodes have a rectangular emitter that becomes the dot when collimated. Click to expand... Oh I didn't know that. It would make sense. Alaskan said: Yes, I was disappointed when I received my PL520, I expected it to produce a round dot, not! Click to expand... I'll have to take another look at mine, because mine appears to have a nice round dot, but I could be wrong.