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very useful calculator. isnt it nessesscary how much ampere the battery outputs?

Hey there, I was inspired by another threat to look for the strongest laser diode I can find that a person can buy on the internet and I found THIS: Osram 70W laserdiode Now I tried to find more information about this but wasnt too sucessful. After reading this pdf I still dont excactly know...

thanks a lot! really helpful comment and it tought me a lot :) have a way better picture now of what polarization is and I didnt think you can actually influence or make this visible by just rolling the source. I liked how your answers went from "yep" over" "kind of" to "almost" ;) as my...

function over fashion :) who cares how one looks while experimenting anyways xD

i thought you could use the cameras optics to change the focus and have a permanent lens in between. but seems like thats too inefficient as you say

how about prefocusing the laser before it goes into the objective lens and use it just to change focus?

Hey! I was thinking that maybe the best protection for the eyes against all colors of laserlight would probably be some videoglasses hooked up to a camera, because no matter how strong the beam is the lcds of the glasses cant blind you (except maybe for some really crappy glasses) Also this...

so power is more important than reflection?

but it isnt just the power that makes them cut metal right?

What's wrong with my suggestion? i thought it was mainly about power :)

and wich lasers are used for cutting metal? isnt it hard to find one that isnt reflected by its shiny surface?

So when I want to build one that never exceeds the diodes max in ampere how can I calculate how much ohm the resistors and poti has to have?

so UV diodes are less "picky" about heating up materials but IR lasers are available in higher powers right? So what are IR and UV diodes used normally for?

Ok now for some details: I heard about ar coated lenses that pass through laser better.. how and why das that work? Andfor the camera lens: would only the focus be interesting? Or could I also use the zoom for effects on the beam?

aaaah very interesting so under 1,000nm doesnt do much to the glass?

hmm ok cool and about the glass? i know there are lasers that engrave glass. do they still use glass lenses?

thanks man sounds really interesting so what do common lasers use in order to get different colors? I thought it was most times an IR laser hitting some material that changes the frequency?

so the deeper the less reflectable? and also less visible i guess. But I heard that there are far stronger IR diodes available than UV so it probably depends on the material right? for engraving in metal uv would be better? And I heard IR is good for engraving glass (how comes it doesnt melt the...

WOW great threat and great pictures! Just one question: does this method apply for other laser colors too? In other words: wich colors can i also achieve with this method?

Hey after reading this threat I still have some questions about UV lasers: So they are way more dangerous than IR lasers? just from reflections? I heard they burn better than any other laser and are less reflected (wich is one thing that would make them safer than IR lasers I thought) Are there...