1 Mega Watt Pulse Laser Gun in High Speed

[AnselmoFanZero]

Ferrari sucks
Mercedes, Audi...way cooler cars.

No need to be jealous. My chest aint swelling because of it. I am a modest guy.

 

[Trevor]

i stepped in because even from my point of view you came off very dickish and you are insinuating anselmo is tossing numbers out there trying to "boost" his e-laser reputation when in actuality he probably did whatever he could to give the most accurate reading.

I really don't feel like dealing with your wall of text at the moment, but I'll respond to this. The most an SSY-1 can output is in the kilowatt range. The laser rod not a megawatt-class piece of equipment. This is relatively common knowledge.

-Trevor

 

[DJNY]

You built it for a right-minded person, there wasn´t an open sale thread - ptherwise I would totally understand worries!

 

[AnselmoFanZero]

It was a favor...not more. Never thought it would end up with 165k views, a webTV show and 100 mails EVERY 2 hours.

Dont start with common knowledge. Some days ago they thought, we live on a flat pizza shaped planet...remember? Must have been a 1000 years ago or so.

 

[anselm]

These threads like you one on Photonlexicon are great for profiling the members.
You get to see which are plain envious and which are able to give credits where they are due.

AnselmoFanZero:
That gun you made is supercalifragilisticexpialidocious.
It looks absolutely gorgeous on the outside, and it is an incredibly cool and unique toy.
Instant nerd-vana. They should feature it on the "Big Bang Theory" IMO.

Yeah maybe the range is not terribly useful when the zombie apocalypse comes a-rollin'
and maybe your guess about the power was off an order of magnitude or two, but who cares?

 

[AnselmoFanZero]

DUUDE xD DONT WRITE STUFF LIKE THAT!
That might happen. Any more mails, and I am gonna freak out. I am so nice and answer each and every one within one day ._. so tired. Moin früh arbeiten..............

It will be on WebSoup...maybe...at least they told me so. MIGHT increase number of clicks :'( it was a favor.........

 

[Trevor]

Dont start with common knowledge. Some days ago they thought, we live on a flat pizza shaped planet...remember? Must have been a 1000 years ago or so.

The power that an SSY-1 rod can handle and its optimum pulse width is known like how 445nm diodes output around a watt at around an amp.

I'm not telling you the earth is flat.

-Trevor

 

[AnselmoFanZero]

You know what? Proove it. Already admitted I cant, so you have to proove the opposite...that its NOT possible to get a MW from a SSY. There was this dude, spot-welding with an SSY. The lamp should burst, but it aint.

 

[Trevor]

You know what? Proove it. Already admitted I cant, so you have to proove the opposite...that its NOT possible to get a MW from a SSY. There was this dude, spot-welding with an SSY. The lamp should burst, but it aint.

When you pump it with a lot of energy over 100-200us it will give you multiple lower power pulses over a longer period of time. It's on the FAQ.

-Trevor

 

[AnselmoFanZero]

Thats what the smart people say. Try it out ^^

 

[anselm]

Sorry to say this AFZ, but "extraordinary claims require extraordinary evidence", so
the burden of proof is actually on you on this one.

That is, of course, if you really want to pursue this issue.

 

[Cyparagon]

You know what? Proove it. Already admitted I cant, so you have to proove the opposite...that its NOT possible to get a MW from a SSY.

I just got 20 watts out of a 445nm diode. Prove I didn't.

 

[AnselmoFanZero]

xD
Sorry....it was late last evening.
I dont even wanna fight about it any more. Already admitted I might be wrong. Another dude calculated and said 800kW might be possible.

I
Dont
Care

Neither does Arayan...he is the owner...just a quick reminder here ;-)

 

[Seoul_lasers]

Whatever, the fact remains that there is some awesome talent for building. Can we leave it at that. There is some truly remarkable stuff out there.

Anyone here ever played with Pulse discharge equipment or Tesla Coils? I am curious. Am I alone in dealing with high energy, high voltage endeavors?

 

[Krogith]

I just got 20 watts out of a 445nm diode. Prove I didn't.

ROFL that is awesome.

He doesn't has time to "Waste" to do things that down puff up hes ego.

 

[goninanbl00d]

i, for one, am in talks with anselmo as we speak for a pulse gun. i am new to lasers but experienced enough to understand wavelength and output power thanks to jayrob, jakegt, anselmo, dtr

the bottom line is this ---

no one out on the internet is cranking out the things anselmo is. the iron man gloves.. these pulse guns. his cool little builds.... im going to tell you something also, something like that is so complicated,ridiculous and unknown that there is no point to really worry about measurements why? because there is no point or basis of comparison. i guess anselmo could lay out alll and any specs he has, but what would it mean? its not like you can compare it to plasma guns.com or pulserifleusa.com

als, anselmo could have taken huge advantage of me and gave me a rip off ridiculous price. but when talking to other vets on here and displaying videos to them, they also would ask about specs but realized while it would be nice, its not necessary because it didnt take long to get caught up in how groundbreaking the footage was that we were all sharing and rejoicing in (4 year old on their bday syndrome, i call it.)

anselmo also felt bad i bought an underspec'd arctic and wanted to throw on a 1W 445nm beam into my custom build pulse gun (to double as handheld also) for completely free.

so, honestly, i don't think any specs matter (not to me at least) because even i realize that something like what anselmo is doing requires thousands of dollars of equipment alone probably to even get accurate readings on.

he has a great rep. he told me that for 24 months if there was an issue that he would help me with whatever i needed. he gave me a 6-8 week time slot and asked for half up front when i was ready to go forward. and i will say this, the price he offered me is very reasonable considering the reputation behind the builder, the promise of great customer service and help when need be and the fact remains... i ask.. where the hell else could i get something like that?

(anselmo, you know who i am buddy, and you know the price we agreed upon. ill be on msn again in the next day. mardi gras really kicked my ass.)

lastly, the fact remains. he spent over 100 man hours assembling a gun to look like a friggin rifle from halo dude. halo. its beautiful, gorgeous and a work of art in itself. the added feature of being able to let loose a charge per minute and 20-30 charges before a recharge is a plus to me.

is it beautiful awesome original functional and insanely dope? yes. anselmo is crossing a threshold with selfbuilds that make things so advanced that its like asking someone whether their i7 8 core is at 1.6 or 2.2ghz who cares!

i stepped in because even from my point of view you came off very dickish and you are insinuating anselmo is tossing numbers out there trying to "boost" his e-laser reputation when in actuality he probably did whatever he could to give the most accurate reading.

oh and ps just for the record anselmo is only taking up my project because his favorite band, pantera, is from my home town of new orleans, louisiana. if it wasn't for this, we would have had no common ground to spark up a conversation and therefore i doubt a price or build would have been even agreed upon!

Your attitude here is absolutely disgusting, even for a new member. You barge into a thread on a topic which you obviously don't know anything about, and start bashing a veteran who actually knows what they're talking about.

First of all, you quite obviously don't know enough about wavelength or power to understand what is going on here. "Jayrob, jakegt, dtr, anslemo". They will teach you just about nothing when it comes to Q-Switched, pulsed DPSS systems. Heck, ask any of them what a Q-switch does and they probably won't know. Why? Because they don't need to. It's out of their league.

twhite28 has worked with more lab solid state and gas lasers than the majority of members on this board, myself included. He certainly isn't being dickish. He speaks the truth.. Not because he wants to be a killjoy or be 'dickish', but simply because he knows more about what's going on than everyone else here, with the exception of Cyparagon.

Let me start by redefining your definition of 'power'. What you're used to hearing about is CW laser systems, where it is always emitting. This is a pulsed laser. This laser delivers energetic pulses with a 'recharge' time. (Yes, dumbed down, but people need to understand here).

The peak power of a pulse depends on two factors- the amount of power being transferred into the rod, and the pulse duration. The amount of power is measured in joules, while the pulse duration (for a Q-switched laser such as this one) is measured in nanoseconds.

1 watt= 1 joule per second.

Using the above equation, it becomes possible to calculate (roughly) the peak power of a pulsed laser, if you know the output power and pulse duration. If you want to learn more, here's a good link.

There's heaps of variables involved, and that's why you don't just get a 'watt' rating on a pulsed laser. You get given a pulse length and pulse power instead.

The laser has the right PFN to theoretically achieve a 1MW output given the right conditions (pulse length, Q-switch condition, etc). Take note of the latter part- the right condition is very important.

This laser uses a slow PFN, it's obvious. Large-capacity low-voltage capacitors are used, instead of the proper high-voltage low-capacity capacitors. In the end, the amount of watts being pumped into the lamp may be the same given both options, but using low-voltage capacitors means that the energy takes more time to move through, meaning the pulse length will be much, much higher.

Now, you might shrug and think why is it so damn important to have a short pulse length. Remember the equation?

If you move 1 joule per second, that's an average power of one watt.

If you move the same joule in 0.1 seconds, that's an average power of 10 watts.

The Q-switch goes a long way when it comes to reducing pulse duration, it brings a 100ns pulse down to a few ns (I can't remember the exact figure off the top of my head). But when it's pumped with a less-than-optimal capacitor bank, such as one from a flash camera, the pulse length may be extended from 100ns up to 1ms.

That's a big difference in peak intensity. And because there's no way the average power is 1MW, the peak power will definitely not be 1MW with the pulse length drawn out so far.

By extension, though, the calculation of peak power (the 1MW figure) from both an optimal Q-switched pulse length (a few ns) and the capacitor raw output (a few joules) is just plain wrong.

Why? Because not everything in the capacitor is converted into light, and not all light from the flashlamp is absorbed by the gain medium (the Nd:YAG rod) either.

To put it into perspective, 15 Joules into the flashlamp results in an output of around 200mJ on a good SSY-1 head.

15 joules to 200 millijoules is a big difference. I suppose the math is starting to make sense now?

Besides, the spot-welding example is just plain stupid. Spot welding can easily be achieved at a 100mJ, and over a 200uS pulse, that's still nowhere near a megawatt of average power, and well within the specs for the lamp. There will be no explosions because the laser can output the power needed to spot-weld while still running within spec. End of story.

Trevor doesn't have anything to prove. You do.

The bottom line is: You've started coming in and talking about something which you clearly know absolutely nothing about. Congratulations, you've just earned yourself a -rep for being an inconsiderate suckup. If you choose to turn into a valuable member who decides to contribute, I'm more than happy to fix that for you.

And did I ever mention your analogy was invalid?

If Intel ever sold a chip at 2.2GHz, and it only did 1.8GHz, there would be outrage. Regardless of whether there was a comparable chip or not. The point remains- if you paid for something that was advertised to deliver X, and it failed to do so, you would be disappointed. Regardless of whether there was a comparison or not.

If we all bought crappy products on the basis that it's 'good enough and there's no comparison', I'm sure the notion of quality would have disappeared long ago.



I'm also surprised nobody mentioned the safety aspect of this thing. You have a completely invisible, pulsed, Q-switched Class IV laser device in something that is essentially a toy. There's no safety features, nothing even near compliance of the FDA 5-point safety system, or even the looser IEC standards.

It's not about 'Oh, yeah, it's safe, so nothing will happen'. It's about what can and will go wrong in a device of such high power. I'd have expected some form of lockout system including a dongle and a key switch. There is none.

Q-Switched Nd:YAG lasers are responsible for more eye injuries than any other type of laser system combined. Period.

Their danger comes from their peak output power. Take this completely plausible scenario into consideration:

You have a 532nm CW laser at 15mW, and you take a specular reflection from a pane of glass to the eye. Assuming glass reflects 5%, that means you only take 0.75mW to your eye, which is well within Class II limits.

You have a 532nm Q-switched laser with an average power of 15mW, a pulse duration of 10ns and a pulse power of 3uJ. That equates to an average power of 100W per pulse. (For those of you who have picked it up, this is CNI's MPL-III-532).

Assuming glass reflects 5%, you've just taken a 5W pulse to the eye. That's no longer Class II, by the way.

Now, combine this insane amount of power with a completely invisible beam, and it's no surprise that there's so many eye injuries. You wonder why everyone's so damn scared of Q-switched and 1064nm YAG lasers. That's exactly why. They have the potential to do serious damage, even with a split-second slip-up.

There's also a point where goggles for yourself is no longer adequate. Measures will need to be taken to protect others- what if the beam is accidentally fired out a window and strikes someone else?

There's no mention of any safety precautions that should be taken, such as beam termination. Safety measures that are mandatory when working with Class IV devices in any lab, yet aren't here. Why? Because someone took a dangerous Class IV pulsed, Q-switched YAG and shoved it into a toy.

Hurrah.

And you wonder why all the knowledgeable members are reluctant to post. And you wonder why the forum is slowly being dumbed-down. And you wonder why PhotonLexicon thinks everyone here is stupid.