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Hey folks, it's been years since I've been on here. But I'm glad it's still around. So lasers are harder to come by these days, so I'm hoping to buy here. I'm not picky, I'm looking for some high power greens and blues. I prefer the higher frequency blues, and greens I am not worried about...

Hello everyone! It's been years since I've been a regular visitor of LPF, but just recently I had an old associate ask me what was happening in the laser world these days. To which I had the answer: No fucking clue. The guy was disappointed, and I was ashamed. So, here I am, looking for some...

Going through some tough times now and I may have to get rid of some lasers. I have a functioning 589 that I have not metered but based on it's luminescent qualities I'd say it's safely above the 35mw mark easy. Pictures are possible. It was bought in a group.buy several years ago and I was...

So this is old news but perhaps new to many of us here. Eta carinae, one of th largest stars we have observed, has been proven to produce uv wavelength spatial and temporally coherent light. That's right folks! The only known natural object to emit laser particles! Thoughts ? Comments?

This is not as newb of a question as the title would make it seem. The temporally and spatially coherent light we get from our lasers are a product of excited crystals (or gas, dye, etc) trying their damndest to stay in their happy ground state. We all know the basics of electromagnetism or the...

I made a small like 3 or 5 dollar donation and was told I'd receive confirmation, however it was never sent and my donation wasn't recieved, I've done th e process a f3w times same results, what might I be doing wrong here folks? Any help appreciated

I have a laser; 532nm, advertised as 1w but does more near .1w or 100mW, and the thing to note is the key lock tail cap security feature. No LED indicator. Now it takes a single 18650 so ~500mW pump diode, not sure what amperage an 808nm diode would use for 500mW, let's say 1.5, which is close...

Has anyone done tests on this diode to determine it's output through varying mA? DTR site says 120mw. Doesn't specify the current setting though. Are they capable of 200mw, 250mw? Any input is appreciated.

Does someone here know how to calculate temperature based on wattage for a given surface area? Say 1mm^2 with 1w. How can the temperature be determined mathematically? We can assume a perfect absorption by the surface material for the sake of ease. Obviously temperature has much to do with how...

Okay, once again this is NOT a very comprehensive review. I am going to break it down into several parts and include some photos. All I have are general measurements, and they are not the best. Here it goes: Host: The host was another Eghemus host, nice design on it. The main reason I chose it...

I have a HL-532-300 from laserBTB. It seems to mode hop alot and when I first turn it on it'll shine bright before dimming a bit where it's easily noticeable. When it's cold cold it needs to warm up real quick before coming to full power and then drops down again. However it drops from high to...

I am looking for the threaded gratings that spin and thread into the end of the laser after your main lens. not looking for flat gratings I need to position seperately from the laser. Anyone know where these can be bought my themselves? I've only come across to them as part of a laser package...

First off this review has no solid definite measurements, only subjective opinions of the lasers im going to discuss. No complaining. I first contacted Wannaburnstuff when I fried my first build (also a 405nm) which happened to be my second 405nm that I had killed. I was so distressed and...

Recently I found a website selling infrared lasers 908nm for curing all kinds of ailments for vet purposes. They say their lasers put our 210w! But do not induce heat in the tissue. I don't see how this is possible. Someone please explain for me better how this is possible or it'll it's a...

First off, this is NOT a comprehensive review. So no complaints about the information given, after all its your choice to read or not read my posts.. So secondly I made another purchase through LPF directly. For simply shipping costs Tha Greenlander sent me a very high quality <5mW 650nm pen...

I know this is a newb question but which end of the battery goes in the host first and which connects to thr tailcap? I cant use the forum search on my phone and I've fried a diode before by putting the battery in backward on accident. Its assembled but I wont risk frying a 90 dollar module and...

This wont be much of a post but it'll be updated with pics and such when I am finished. My 405nm 450ma module from DTR came in today and I couldnt help but test it with a 18650 battery and WOW, works great! Host should be in tomorrow and I just gotta take a look to see where the solder points...

Does anyone know a good place, preferably in the US that sells diffraction gratings? For anyone unfamiliar with the term, im talking about the pieces that are threaded on your laser AFTER the main lens and pivot along the beams axis to create changing patterns on walls or trees etc,.. I only...

This site has some good lasers and some Shit lasers but they delivery fast and reliably. I used to like them you just have to know what your buying first half their lasers are Underspec and over priced but they do have a few good deals.however my Google account is now being hacked from China and...

Title says it all. What a sad day I loved my 405nm dearly. Guess its time to give laserbtb a try. This sucks!