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  1. M

    Trying to have a 3mm beam and a low divergence.

    Hi, I am planning to make a red laser with a lpc-815. My goal is to have a beam diameter between 3 and 5 mm and as low divergence as possible. I don't care at all about having high power. I don't want to have good burnig power, i just want a nice beam. Of course i used the search engine of the...
  2. M

    lpc-815 beam

    Hi, I am about to make a laser using a lpc-815 and module coming from modwerx. I am wondering what kind of beam i can get with it ? What is the beam diameter ? Is it easy to have a good collimation or is there some divergences issues ? Thank you !
  3. M

    non lasing mode for a diode

    Hi, I am a french astronome and in order to check the quality of the mirror of my telescope i have made a bath interferometer. You can find what is it here : Bath Interferometer - Starry Ridge For this purpose i use a 1mW green dot laser diode module. It works well but it would be better if i...


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