ideas needed for 50-100W medical laser

Fiddy said:

its a disease for stupid people

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wow...personally, i don't think hes stupid for having flesh eating parasites, but that's just me :thinking:

ever try a hot tub or sauna?

slight temperature change such as what a sauna would provide is not enough. You have to almost burn the skin with heat or cold to kill the parasite. Using heat (such as a red hot knife blade) is the ancient way to treat the disease. ouch!

Dry ice rather than a laser.

I have not seen dry ice available here in South America

Curling iron? I don't know :/ or a soldering iron. Ouch. Might as well be that hot knife. But honestly I think I would use the hot knife. Grit your teeth and improve your symptoms. The momentary pain would be worth it imo.

That is not applicable to my type of leish. It occupies spaces under the skin undetectable when the population is small. So I need something with large coverage and that can penetrate skin (such as red or infrared light).
Well, I thouoght for sure someone on a laser forum could tell me what laser LED to use but I guess that was just asking too much.

It's not people don't want to help Jag it's the question you are asking is outside of what anybody who has experience of powerful gas lasers would help with.
100 watt tubes are usually in the 6mm diameter beam size basic output from a DC tube. You suggest 200 - 400 watts per SQcm,

3.5W per Sq MM from a 100 watt 6mm beam diameter source or 350 watts per SQcm.

That sounds about right.

Something has been miss reported or missed somewhere then because I just fired a 100 watt tube @ 100% power non focussed at a 2mm thick piece of MDF (composite wood)(6mm diameter beam) and it burned through in under a second.
At 50% power (50 watts) it still sets the material on fire instantly.
At 25% power it STILL sets the material on fire instantly.
At 12.5% power (the lowest setting the 100 watt will fire at) it STILL chars and sets 2mm MDF on fire.

Something is wrong with the numbers or your understanding of them.Power density of that order of magnitude is NOT going to work if you set it up yourself.You will simply burn yourself BADLY (possibly leading to secondary infections of god knows what)

The guys aren't trying to be obtuse or unhelpful, they simply understand laser physics to know at it's most base level anything you try like this isn't going to end well.

You mentioned RED or IR, they are worlds apart, that alone would stop me trying anything like this (and I understand how desperate you are I really do) but all it will achieve is worsening your situation and not making it any better.

cheers

Dave

Not knowing much anything about lasers I first asked for a high power one.
Then, if you read all my posts, I asked for anything that can heat the skin without burning it. Maybe this forum is not the right place to ask. A pen laser that a teacher uses is non-damaging and non thermal. That is one end of the spectrum. Then there are lasers that can cut through wood and other materials. That is the other end of the spectrum. Maybe no one on this forum has experience with in-between lasers.

Your probably right. Good luck. C-ya

yea you might have better luck in a MEDICAL forum instead of with a bunch of guys that play with hobby lasers.

wow

Hi knife forum. I need a giant knife to cut off a tumor.

"probably not a good idea, big knives are dangerous "

Well I just need to get rid of it, how about a smaller knife


" still going to hurt yourself man. Just don't "

Well maybe you guys just can't tell me the knife I need.

" regardless the knife you need, no one will aid you perform a treatment like this and be the one who told the guy what knife to use"

Plenty of experience Jag, lasers per-se have no heat, they have no molecules to vibrate ergo no temperature to measure. What they do have is power, from next to nothing to massive depending on input power / efficiency. Then you have to consider the wavelength, some materials absorb lasing radiation at different levels depending on the wavelength, for example a 250 watt YAG will do very little to wood, it will cut 6mm steel but just about scorch wood,a 250 watt CO2 is still an IR laser but will cut wood easily but be reflected by steel (until you reach far higher power levels) that's just two IR lasers. Go to the other end at the UV spectrum and while you may find relief from your current unpleasant condition that will pale into insignificance when you potentially develop cancer 2 years down the road.

A pen laser that a teacher uses is non-damaging and non thermal

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Not correct, a beam from a 30mW teachers pointer can cause permanent eye damage, but as you say it's non thermal per-se as it has no specific heat value of it's own.

I asked for anything that can heat the skin without burning it.

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That's the issue, lasers don't have a temperature of target cut off, they simply continue to generate heat in the target until they either run out of power or your pain tolerance is reached.

Lasers are simply the wrong tool for the job unless manufactured as medical systems to very tight tolerances and quality standards (and very strict legal controls) lasers and high energy light in general can cause all manner of chemical changes in the body past just generating heat, even the medical research profession spend years testing and retesting before considering aiming that sort of equipment at living beings.

There are a vast number of sources in the EM spectrum, X-ray,Microwave, Radio, visible light etc etc....guessing which one to use based on hope and desperation is something nobody here is willing to do. Why? because 99% of us here understand the physics behind what your asking and know how dangerous it will be to attempt it.

cheers

Dave

jaguar said:

Not knowing much anything about lasers I first asked for a high power one.
Then, if you read all my posts, I asked for anything that can heat the skin without burning it. Maybe this forum is not the right place to ask. A pen laser that a teacher uses is non-damaging and non thermal. That is one end of the spectrum. Then there are lasers that can cut through wood and other materials. That is the other end of the spectrum. Maybe no one on this forum has experience with in-between lasers.

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again the No No heats up anything under the skin with a flash of the xenon lamp in it and sort of concentrates the light in a smaller area. an optical pump sort of. this is the only safe thing I could think up. Look for the No No on Ebay or just google it and go to their site.

I thought it was for hair removal didn't know it was for acne

jaguar said:

OK, for 1 there are no doctors doing this kind of therapy for people suffering with leishmaniasis. It is DIY or nothing.

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There is the answer--if lasers were a good treatment then someone would be offering same.

Maybe go see a dermatologist with a skin resurfacing laser machine and see if you can work something out with him as to treatment.