Recent content by Rintec

Re: Beam expander to focus laser bearm Thanks a lot. I think I have figured out what I have to do. Now I am waiting for my laser source and lenses to make experiment. Regards

Re: Beam expander to focus laser bearm Steve001, Alaskan, Singlemode, and others. Thank you for commenting in this thread. I tried to summarize what I can understand from the discussion and from the source out there. Please evaluate attached files. Whether theoretically I am right or...

Re: Beam expander to focus laser bearm Let' say 50 m away. Correct me if i m wrong. Illustration: I have a source of 1 watt laser with 5mm dia beam. I want to make a spot of 2.5 mm dia 50 m away. I can setup an expander (reducer) so that the output beam is a collimate one with 2.5mm dia...

Re: Beam expander to focus laser bearm I found this literature very interesting but failed to understand deeply the mathematical expression. http://www.telfor.rs/telfor2005/radovi/OT-6.3.pdf Hope you can understand this and teach me back. Best regards.

Hello. I'm new to this forum, and just recently started to get interested in lasers. I am a mechanical engineer but so far in my career never seriously using laser. After googling for some hours I found this site looks very informative.

Re: Beam expander to focus laser bearm whew..it was a bunch. Thank you! I am reading on it.

My project is to make a laser beam expander so that a laser beam can be focused far away from the source. I have read some sources on the internet but it ended up in "collimate the laser". For example galilean telescope. What I need is not just collimating, but to focus laser beam (waist become...