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I just went down to the local hardware store and purchased surgical tubing. works just fine.

Well the debate can continue until the cows come home but once the FDA announces all portable/pointer lasers fall under 21 CFR 1040.11(b) anything more powerful than 5mW will be outright banned regardless of safety features. Previously you could import a class IIIb portable laser if it had an...

No portable class IV laser is FDA approved, period. Furthermore, portables and pointers will soon if not already fall under 21 CFR 1040.11(b) surveying, leveling, and alignment laser products with maximum of class IIIa output per information I received from the CDRH.

Here's an interesting article about using IR lasers to create condensation in the atmosphere. Laser Beams May Be Next Rainmakers | Cloud Seeding & Weather Control | Weather Modification Techniques & How to Make It Rain | LiveScience

If you are really concerned about on and off, just alter the output power and leave the laser on. It'll switch incredibly fast if you are only varying the output level. The nature of photodectectors allows you to see the received input as a voltage level. The circuitry is easy enough to build to...

The complete equipment already exists but you have to look on the telecom side of the house. All telecom backbones are now serviced by Optical Carriers (OC). You may have heard of OC-3 or OC-12 or OC-192 or even larger pipes. These numbers indicate the bandwidth of the fiber carrier. Telecom...

Thanks guys for your support. We currently have 9 frame styles available but we have a new frame style (style 56) that is out now but not on our website. It is a narrow wrap around that looks slick as well as fits very comfortably. I used to use style 33 in the lab, now I use the 56 in the ARG...

The glasses mentioned conform to EN166 standards. These are the impact resistance standards of CE. They are simple eye protection from flying debris certified. The lenses are polycarbonate which filters UV light by it's normal chemical nature thus usable by dentists who are curing UV activated...

Since I work in the laser field, my optometrist photographs my retinas and compares them at each checkup. It allows her to see changes that might not be obvious when just visualizing them. She has a pretty slick system to take the photos.

@DJNY, The girl burning stuff is Hillary (Hilldog). She does a lot of the testing in our lab. Unfortunately, she is leaving at the end of April. Her husband got a job in Idaho so she's moving.

I finally got the chiller working so here is the video of my 40W CO2 laser in operation. QNlw47HOKZI

I fixed the chiller and made a video of the CO2 in operation. I've got some editing to do but it will be up soon. I'll tell you now, that sour apple jolly rancher candy never stood a chance.

There is a huge list of books you could choose from for reference. Some of the more common one are: Lasers by Siegman, Anthony (in depth, theoretical) Photonics and Lasers by Quimby, Richard S. (General photonics, 2nd half is lasers) The Physics and Engineering of Solid State Lasers by Kalisky...

Well your choice of Nd:YAG will make life much easier. Getting Nd:YAG to lase is far easier than some other rod configurations. I see the mirrors have a damage threshold of 500MW/cm^2. You now have a place to start your calculations. You will need to know the amount of energy your flashlamp will...

The power supply will run as is using the test button. You can connect TTL+ or TTL- signals as well as PWM to control the laser as well as interlocks if you wish to use them. The tube is a common Chinese manufactured tube costing me a couple hundred dollars including the power supply. The...

My system is a recirculating chiller. It cools the water via TEC. It will actually heat the water if I wanted it to. I have it set to standard temperature (25C).

It hasn't yet but I only tested it for a few seconds. Didn't see or hear any arcing. I'll make any adjustments tomorrow when I video it. I really wasn't going to run it today. My main goal was to test the cooling system and verify there were no leaks.

Yeah with that glass tube in your dorm room with the water cooling lines, your friends will probably be trying to stuff their smoke into your new "bong."

I don't get to play with CO2 systems much but they are always fun when I do. No need to be afraid, just be respectful. Sealed CO2 systems are some of the least expensive, high powered systems you can get.

Here's a few photos I took today of a 40W CO2 laser setup. I'll be videoing it tomorrow so a video will be available soon. I fired it up today as it was slow in the afternoon. All I can say is to keep flammable items out of the beam, lol. This is the tube on the bench with the cooling lines and...