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Came upon this Ophir. Any idea just what it is?

Question for those who have built their own TEC based LPM's. I am getting ready to put everything together, and noticed that one of the leads attached to the TEC seems rather unstable and about to break. Is there a recommended way to "seal" or "protect" those connections? I was thinking of...

Greetings! I ordered a laser from a recommended ebayer dennyzhaogoods. Just had a question about Customs. I've ordered and received several lasers from China with no difficulty, but this one seems to be stuck in customs? I know it's just been a little over a week, just wondering if this is...

Just got a few new lasers, I'm still waiting for my LPM materials to get here to get them measured, but when looking at the 75mW 405nm laser focus all the way out, I noticed some spots in the beam. Are these normal? I haven't checked my other lasers, but will.

Since number of junctions is important when selecting a TEC for an LPM project, I've been looking at quite a few online. One thing that I'm not finding easily is just how many junctions a particular TEC has. Can anyone shed any light on how to figure this out based on a website or a datasheet...

Greetings everyone! I'm very interested in building an LPM. An inexpensive one. I don't need 1% accuracy, just something within say 10%. There are several good threads about the <$50 LPM builds, but they are rather necrotic, and I don't want to resurrect them as that's usually frowned upon...

Greetings all! A newbie here, and wanted to introduce myself. I'm from WA state, near the Seattle area. I'm familiar with electronics, and have always been fascinated with lasers, but never really did anything with that fascination until now. I've ordered 6 lasers from various sources...