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Hi all, since I'm fascinated by lasers and I'm studying superconductivity and related phenomenona such as magnetic levitation due to Meissner effect and so on, I wonder if there is any experiment that can be achieved by using both superconductors and (low powered, <5W) lasers :evil:. Somewhere I...

Hi all, I'm new to this hobby. During this last month I've been building my first blue laser using the 9mm diode sold by DTR. Tonight I read something about "LEDing a diode" and I got scared about the possibility I LEDed my poor diode. I'm running it with a single 3.7V 18650 cell (it's fairly...

Hello everybody! Firstly I present myself: I'm Daniele 18 years-old from Milan, Italy. I decided to learn something more about lasers since I've seen some amazing videos on youtube. I was searching for some more detailed information about lasers on the Internet when I came across this wonderful...