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With DPSS lasers, the wavelength is converted, while with diode lasers, the laser is emitted directly without conversion. Now I've noticed that other than red (standard pointers) and violet (bluray player) diode lasers, most diode-based lasers (including blue, green, and yellow) are DPSS lasers...

I found it interesting, and while I was aware many such incidents have occured, it wasn't until recently that I found good documentation of such incidents. But that's still documentation of incidents that happened a while ago. I've not recently found news of ANY such incidents that had happened...

Here's a news story about some guy busted for shining a laser pointer at a helicopter. Quoting the story: Ha ha, PWNED! And here's what he said about the incident (also in the story). And I'm thinking, you're sure right you did something wrong and dumb. What a n00b he was to think he could do...

Where does the static come from? Shuffling your feet on the carpet while wearing socks, and then touching one terminal of the capacitor while the other terminal of the capacitor is grounded?

650nm is a standard diode laser wavelength. No DPSS needed. Green and blue wavelengths (until just VERY recently) needed DPSSFD techniques because semiconductor materials that had the right properties hadn't been found until very recently. In fact, the green diode-only lasers are a brand new...

How do electrolytics regain charge, even after fully discharged and shorted, once the shorting wire is removed? Where's the source of the electric charge, when its not in any circuit?

The old new is that turret mounted weapon that blinded the American pilot. This actual handheld laser RIFLE though is new news.

Actually I wasn't certain that laser safety and laws was the correct section for it to be in. So when I found a different similar laser weapon, I decided to start a new thread in the general laser section, and refer back to this old one as needed from the new thread. Yeah, you can't use a...

Re: Mistakes That Can Happen To Anybody... Regarding the opening post of this thread: That's odd. A low battery means less power to the diode and so should have less potential to damage the diode. And if it has a shutoff circuit, then that even MORE is a protection to the diode. Also how does...

Not all laser diodes need a heat sink. If you run a true diode laser (not DPSS, as these DO have an expiration time), then you don't need a heat sink for low power (5mw or less). And certainly if you are going with Class II (< 1mw) then you for SURE don't need a heat sink.

That's odd. In a laser forums, I would have thought this thread would have gotten more attention than it has.

I always thought multimode meant like wideband and would work with any wavelength, but singlemode meant it was tuned for a specific wavelength, allowing that wavelength to travel very long distances compared to other wavelengths (and other wavelengths got attenuated) much like a resonant waveguide.

My green laser pointer had the DPSS 1064nm built right into the brass mount behind the ktp crystal, and the ktp crystal bonded to the front of this. There is no output coupler mirror in front of the ktp crystal (its likely between the ktp frequency doubler crystal and the DPSS laser crystal...

Wait I thought that multimode produced the oval beam, and the singlemode produced the circular beam.

What prevents multiple rays from entering? If I shine in a red and a green laser, a yellow beam will emerge from the other end.

Is there a 780nm diode I think? Also, what makes the 1064nm IR beam in a green laser pointer, prior to it being frequency doubled to 532nm? I thought that there was a 1064nm laser diode behind the KTP crystal? I took apart a green laser pointer once, and the optical components I found were (in...

This brings me to the next question, what are Single versus Multi mode fiber optic cables?

So does this mean if I buy a laser diode labeled Single Mode, it will produce a truly circular beam instead of eliptical? It also would be a simpler design and thus be cheaper right?

Do you also sell raw laser diodes? I would be interested in purchasing raw diodes in any of the available wavelengths that a laser diode can produce without using DPSS technology (405, 447, 635, 650, 808, 1064nm). Also I'd be interested in perchasing a colimation optics sled (I think that's what...

And they meet US regulations, even though they aren't in the US?