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In case you missed it, lately there has been an influx of UFO/UAP reports in NJ, mostly over Morris and Somerset counties. Any thoughts about this? Bonus question: I know quite a few LPF members are from Jersey, and there's a good intersection in the venn diagram of laser people and...

For the uninitiated, 3blue1brown is an educational math youtube channel known for his great explanatory visuals and intuitive explanations of complex topics. He just released this video about transmission holography, and I definitely feel it was worth the 45-minute watch. The approach in the...

This might come off as a dumb question but I wanted to open it up for discussion nevertheless. I've wanted to get more into custom builds and the hands-on electronics side of this hobby for a while. My "excuse" that I've only realized consciously recently is always that I don't have the proper...

Before someone else says it, I can’t afford it either. But does this make sense? You now have a device that shows what’s in front of you, but it’s on a digital display in front of your eyes. In reality, your eyes are separated from the scene by a wall of components inside the headset. Enter a...

I'm clearing out some of my old/unused laser stuff and I wanted to see if anyone here would be interested in this before I toss it, including for the parts or what not. (not included: midi keyboard and notebook in background lol) Warning: this was a cheap "military grade" 532 laser and cheap...

Are you thinking of the same bad idea I’m thinking of?

https://www.nature.com/articles/d41586-023-03047-w

Just a vague question that crossed my mind and left me curious as to what other members would have to say. I own a few lasers in the 100-200mW range and they sort of occupy a space that's too powerful to be safe, but not powerful enough to pack a punch. Mostly pretty to look at (outdoors) or...

I was out the other night taking long-exposure photos of my lasers and the stars, so I thought why not both? Left-to-right: 635nm 50mw (DL Viper), 589nm 20-100mw (DL Spartan), 520nm 50mw (Sanwu Pocket), and 485nm 42mw (small steel host build purchased from a member on LPF). :)

>> Article Here << If my understanding is right, the high-intensity laser pulse blasts a pillar of air particles out of the way, and that low density air pillar becomes the lightning rod. Just nuts The light energy itself isn't conductive of course, but this is a pretty cool almost-direct...

If anyone is interested in purchasing my 200mw 405nm Sanwu pocket edition laser with the charger and safety glasses it came with, PM me to discuss a price. It measures a stable 236mw on my LPM. It is lightly used with care but in excellent condition. I am selling because I have little use for...

This is a page on the official USPS website about prohibitions on shipping to Australia Check out that last item on the list lol I guess my 999,999W build is safe, phew

Going out on a limb with this one—thought I'd check if anyone here works for Thorlabs as I've been applying for data analyst positions and came across a position at the company today. Had no idea they were headquartered in my home state of NJ. Figured I would ask since the company name is...

I have a question about the two most powerful handheld lasers I own. I've looked a bit online but nothing has resolved the specific question I have in mind. Not sure if it's answerable in the way I'm presenting it here but figured it was worth a shot. The two lasers are a 1.1W (measured)...

Here with a (potentially) dumb idea that somebody with a stronger physics/lasers background can hopefully pick apart. So this much I understand about lasers: there is A) a lasing medium, be it solid-state, dye, gas, semiconductor, etc. and B) a pump source such as electricity, light from...

I'm pleased to share that today I received one of Lasence's 561nm <5mw presentation pointers, confirming that it is in fact now possible to ship this item to the US. 😁 I first ordered a unit last summer and it was halted by Chinese customs, but Lara of Lasence recently informed me that they...

I know that a few 420nm diodes exist. Has anyone here purchased or seen one that would like to share some pictures or account of what it looks like? I'm mostly just curious. The closest I found is this 430nm. Other than that I couldn't find much in the way of 420nm while digging through the forum.

Now that I'm done with classes for the semester I finally had time to take some long exposure tripod shots with my lasers. I acquired this custom foam case specifically for this purpose and made space for my four lasers that made the most sense: 485, 520, 589, and 635nm — all close to 50mw. At...

If anyone has a spare they wouldn't mind parting with, I'm willing to buy. I'm avoiding purchasing from Sanwu directly due to the covid situation over there right now. Want to be able to illuminate a plane cross section of some substances for fluid dynamics work. Looking for fast domestic...

Exciting News for the Laser Hobbyist Quantum dot laser diodes have been long sought after for their promise of superior emission quality and wide range of available wavelengths. But due to the complexity of using quantum dots as a gain medium and lack of incentive for mass production, they...