Who did CONANs show

[mliptack]

Beautiful!

1st: "The Plastic Light", Friedrich Forster

What the crap is that? haha

-Max

Edit: Can someone tell me what the vag burners are actually used for?

[dsli_jon]

Edit: Can someone tell me what the vag burners are actually used for?

Hey Max -



...SURGERY, man!!!!! (which is WHY all the 'ranting' over stuff like the 'laundry-room death-star', there, is both ILLEGALLY modified, and SUPER DANGEROUS!!! - and he wants me to sell him galvos...
..yeah, later, taco..)

...oh, boy, I'm ranting again...

peace..

- J

[mliptack]

Well like what kind of surgery? I mean is it used to cauterize? Or what? I guess I just cannot fathom a particular use for the beast. Well besides a damn awesome laser show ... when safely done of course.

[mliptack]

http://www.youtube.com/watch?v=iy6PHvOepUc

Also in the video above what causes the laser to flicker at the end? Is he blanking the beam? Am a seeing the harmonies with the q-switch?

[dsli_jon]

Well like what kind of surgery? I mean is it used to cauterize?

Hey Max -

Actually, a LOT of different types of surgeries / treatments - best to visit http://www.laserscope.com/company/index.html for fuller details, but basically, INSIDE the body, docs use a device called an 'endoscope' http://en.wikipedia.org/wiki/Endoscope whereby a 'tube' gets inserted into an area of the body requiring surgical treatment (ie: intestines, gall badder, prostrate, etc), which, traditionally, you'd have to OPEN the body-cavity up to GET to, thereby being more 'invasive' and causing more trauma, longer heal-times, higher-risk of infection (more exposure to air), etc, etc....

..NOW, with an 'endoscope' (among-other devices / techniques), the surgeon inserts just a relatively-small tube (thru a much smaller-than-previously-needed cut / opening = less trauma, risk of infection, etc, etc), thru which they insert #1- a hi-res, fiber-optic camera-scope (to SEE what they are doing), #2- a dremel-style cutter/suction/water/extraction tube, and, #3- thanks to 'Laserscope', a fiber-optic, with 20-40W of raw laser-power at the tip (see that above shot with the glowing fiber and the 'E.T'-finger tip ) which can cut, (ablate), vaporize, shatter (stones), and best of all, cauterize (seal) at nearly the same time, so there is usually, MUCH less loss of blood - and the high-temp of the cauterizing-action sterilizes, (kills any contact-bacteria) at the same time.

Really, when people speak of the 'miracle' of laser surgery, they're RIGHT! - there are many, many, many benefits..Then, with different wavelengths, (ie: the 1064nm, coming out of the SAME laser, same time / alternating) the docs can effect specfic types of tissues (ie tumors) and pigments (ie: tattos, etc) - without harming / destroying too much of the surrounding tissue (which is great if your trying to seal an annurysm in someones' aorta, or brain, right?? )

I have some EXTREMELY COOL video somewhere (I'll have to dig thru my archives ) of one of these lasers (with 1064nm, so, beam NOT visible, obviously, just the result) of a doc doing a demo, where he runs the beam across THE EXPOSED YOLK of an EGG - and it creates a cut / seal at the same time - BUT THE YOLK DOES NOT BREAK!!! (later he 'pops' it with his finger, so you know it was not 'hard boiled' ) THEN, he melts holes in the side of a styrofoam cup - full of water - but it only melts it to the point of a micro-thin 'skin' (which you can SEE into) - and yet, the WATER DOES NOT SPILL OUT!!!! - Last one is him REMOVING THE SHELL off an EGG, underwater, WITHOUT breaching the 'membrane' so the yolk/white does not spill into the tank!!!! (this was to demo 'shattering' of calcium-based 'stones' inside a gall-badder, with laser-light-based 'shockwaves' (!!!) ...but I think that last laser was not a Laserscope - but was from a high-power 1064nm pulsed 'Sharplan' or something, don't remember..) One of the coolest demos I've ever seen...

Also in the video above what causes the laser to flicker at the end? Is he blanking the beam? Am a seeing the harmonies with the q-switch?

No, looks to me like this dope either FORGOT or DOES NOT KNOW that when you remove the 'motherboard', to 'hot-rod' these things, you also remove the 'KTP-oven' heater / controller (the 'oven' is literally a little ceramic heater that slowly warms the KTP crystal to the 'optimal' temperature (which is balanced out by a cooling-water jacket), as it is about to get 'blasted' by an awful lot of laser energy, and this (simple explanation) allows it to lase more 'stable', 'cause obviously you don't want wild swings of laser power inside someones' spleen! )

whew. still with me? OK, now if the KTP 'oven controller' is MISSING, the KTP crystal will 'struggle' to adjust to all that power blowing thru its' keister (again, this is the 'simplified' version ) but once the Q-Sw kicks in, it adjusts and 'stabilizes' very quickly, which you can see when he kicks it on in the other video, and you see the power jump on his meter, but then slowly climb and 'level-off' - well, when the Q-is suddenly shut off, without the oven keeping it at that 'optimal' temp., the KTP is now 'struggling to adjust' to that lower 'temperature', thus the 'fluttery' output.

This can also result from a poorly aligned 'focal-spot' on the KTP itself - something which we can conclude this guy ALSO knows nothing about, as when he first turns it on in the other video (where he keeps saying 'BAM' ) the laser is only doing a Watt-n-change (???!!) - bad alignment, and likely, no oven-control = low, fluttery CW output (and likely, DAMAGE to his crystal - SOON! mark my words - I'll get a frantic email soon - will post results for a good laugh! - boy, that's mean.. aah, with this 'hack', I don't care.. ) Properly-aligned + temp-controlled, these lasers should do anywhere from 5-6W up to 16-18W - CW!! (median is usually about 8-9 W or more...)

...Answer your question?? Hope it helped...

peace..

-J

[dsli_jon]

...sorry - PS -

Just re-read that little 'endoscope' article from wiki, and I just couldn't resist... here's an 'intriguing' quote from the 'History' subhead:

"The first endoscope, of a kind, was developed in 1806 by Philip Bozzini with his introduction of a "Lichtleiter" (light conductor) "for the examinations of the canals and cavities of the human body". However, the Vienna Medical Society disapproved of such curiosity."

..So, Pat- is THIS where you got your inspiration for calling Laserscopes: "Vag--- Burners"???

sorry...

- J

[mixedgas]

Beautiful!

1st: "The Plastic Light", Friedrich Forster

What the crap is that? haha

-Max

Edit: Can someone tell me what the vag burners are actually used for?

KTPs are mainly
gynecology, prostrate, kidney and bone. blood absorbs that green almost as well as it adsorbs argon blue, so any where you have tough bloody tissue, you use a ktp, and since you have it lying around, and it costs 250K new, you use it for other things like derm too.

As I understand the latest 80 watt varient for prostrate (and it has been considerably hackerproofed and has a sealed resonator) has feedback through the fiber that looks at the type of tissure (prostrate cancer) and decides if the surgeon can fire. You then have a vacuum pump running through a tube next to the fiber to suck the vapors/fluids/carbonized tissue out.

At like gigawatts of peak power, nothing tissue based is gonna stand up to a KTP beam.

Soem of them have IR mode to make them even more versatile, and there was a 8 watt red dye attachment for photodynamic therapy. My budd has a ktp dye attachment for sale if anybody wants it. I'll then fly out to whomever buys if (well. if they are in the states) to see what 8 watts of 640 looks like. Amazing machine, but NOT for amatuers, and the modified medical ones take skill to keep going.

For example, you dont initially tune them for max green, you tune them for max IR leakage at the fold mirrors. Thus it takes skill.


hope this answers your question.

Steve

[nanoWatt]

80 watts is crazy. According to this document, I'm reading that you're not supposed to have more than 12 watts in a laser show. What I'm wondering is how they figured the 12-watt cutoff.

http://www.fda.gov/cdrh/radhlth/pdf/llsgde01.pdf

It's on page 20, and says "

FAA will not object to open
air shows with Class IV laser
beam powers between one-half
and 12 watts if the laser manufacturerloperator
informs FAA
of the location, time and laser
output sufficiently in advance
of the show and if FAA can
restrict the air traffic in the
area.
In most cases, FAA will object
if the laser beam power is
greater than 12 watts. A laser of
this power is rarely needed for
an effective light show and
could require extensive restrictions

on air traffic."

[Laserman532]

...sorry - PS -

Just re-read that little 'endoscope' article from wiki, and I just couldn't resist... here's an 'intriguing' quote from the 'History' subhead:

"The first endoscope, of a kind, was developed in 1806 by Philip Bozzini with his introduction of a "Lichtleiter" (light conductor) "for the examinations of the canals and cavities of the human body". However, the Vienna Medical Society disapproved of such curiosity."

..So, Pat- is THIS where you got your inspiration for calling Laserscopes: "Vag--- Burners"???

sorry...

- J

My first KTP show was done with a Medical Laserscope '90 or '91- never mind how i got a hold of it...I DID and thats all that matters. I duct taped a set of scanners on the front and as far as I know that was the first time.

I was doing mirror alignments in the high noon bright sunlight that day and was so blown away. That day i made a plan to sell my 171's (i owned 6 at the time) I had just come off the 88 olympics in seoul with IE, LM, and a few other folks.

A 171 does 20 watts of light for 480VAC 3 Phase at 50 Amps & 6 GPM of FRESH water at 60 psi

I was playing with a laser that did 40 watts of green 220VAC single phase air cooled. You dont need to be a friggin rocket scientist (buffo) to have a tad bit of vision.

I forged a relationship with laserscope and started designing the Ultra Ray- TWO YEARS OF SECRECY. The product was born and introduced and got second place????? (sold 38 units) ILDA at that time had some of the brightest people in the world (at least I thought) Vision is a rare trait that few share, Floyd and I shared vision and set the bar as high as you can put it. The only bar higher in my opinion was the COBRA YAG (still unsurpassed in my opinion) (sold 5 units) Because vag burners become surplus "Why purchase something for $30K that has some precision & class, when i can get a POS for $5k" I have no respect for WALMART MENTALITY!

You hit it Jon- set your standards high and you can achieve ANYTHING.

Vag Burner - one of the little talked about secrets of Co2 & KTP lasers is to remove venerial warts (sorry about spelling, i never had them)

second place...HA! I dont know if I am or whatever.............

[Hayden]

80 watts is crazy. According to this document, I'm reading that you're not supposed to have more than 12 watts in a laser show. What I'm wondering is how they figured the 12-watt cutoff.

http://www.fda.gov/cdrh/radhlth/pdf/llsgde01.pdf

It's on page 20, and says "

FAA will not object to open
air shows with Class IV laser
beam powers between one-half
and 12 watts if the laser manufacturerloperator
informs FAA
of the location, time and laser
output sufficiently in advance
of the show and if FAA can
restrict the air traffic in the
area.
In most cases, FAA will object
if the laser beam power is
greater than 12 watts. A laser of
this power is rarely needed for
an effective light show and
could require extensive restrictions

on air traffic."

Interesting read... I found the little section in there that states that performers cannot be exposed to anything more than class II