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FrozenGate by Avery

laser wavelength change?

Fiddy said:
what did you do with your 'sometimes ~500nm' one?
Click to expand...

yeah i exchanged it cuz it began putting out a noticeably lower output. even the dot became dimmer. so i wasnt gonna let my money go to waste. and yeah, the darn thing mode hopped to TEM30 constantly and soon i gave up :yabbmad:...
 





VERY rude tags you guys..... He seems to know more than any tr0ll and I don't blame 'em a bit for returning a mode hopping laser. Just say'n.
 
Well, I didn't put those tags at all ... I just saw them and I thought it was funny :D

Don't take everything to seriously... after all the OP didn't actually have serious proof about the whole thing ... so people assumed it might be fake..

that's how the world goes :D
 
Blade said:
i never tried this, but i believe you might be able to use a prism. (just another alternative maybe)

BTW i recieved my replacement laser not too long ago and its way more stable than the other :wave:
Click to expand...

I tried a prism, didn't see more than one wavelength.

I'll try the diffraction grating when I get one, meanwhile I welcome any suggestions.
 
foulmist said:
Well, I didn't put those tags at all ... I just saw them and I thought it was funny :D

Don't take everything to seriously... after all the OP didn't actually have serious proof about the whole thing ... so people assumed it might be fake..

that's how the world goes :D
Click to expand...


i dont blame them for thinking that, which is why im not worried bout the tags. but i didnt have the right stuff to give real proof and stuff so thats another reason i gave up. but i still thought it was worth posting to see if anyone else had similar experiences or had any info on such phenomena.
 
Hi all,

Im new here and i know ur reaction might be "whaa?" I work with graphics, designs, etc... Im not accusing "Blade" guy i just want to show something and you all can decide urself. Here is the same picture on the left (original has natural consistent exposure fading ) and edited on the right (added HUE of blue and creating a visible exposure "ring " barrier ):
howto532nmto500nm.jpg

Then try to compare his two types of photos. Any other explanation is welcome.
My english is not very good so i hope you understood well what i was trying to say here.

Thanks

Dave.
 
So your saying that when you change or add blue in that photo with PS you can expose the littlebit of 473nm in 532 laser light ?
 
No, you are simply changing the hue of the overall colour. The amount of 473nm light emitted is so tiny, that some lasers won't produce any at all, and others will look like a very faint blue dot if you look into them with goggles. You can't actually see the dot on the wall at all.
 
Forget about lasers.. Ever you used photoshop or any other picture editor? if yes you must be heard of HUE so i think it was easiest way to make it that kinda color, ofc w/o knowledge of photo being affected and any guy like me would definitely notice "cheap" trick.
 
LOL don't think i belive that photoshop crap can reveal the blue in a green laser
 
i dont even own any photo editing program :crackup: and that ring thing is from the laser being so bright. you can probably get that from any laser dot you take a picture of, especially with cheap cameras. and of course that ring is gonna be different if the color is different... btw i saw a post of someone else having a similar experience on this forum (not sure where though)

and welcome to the forum G4nJ4M4n :D
 
As i said im not accusing so you dont need to explain urself, it was only an opinion if it were a fake. You know best if it's true or not so chillax :umbrella:
 
weeba, he was just showing you how easy it is to falsify pictures. He's not trying to show how to detect other wavelengths that lasers are emitting. Cameras just aren't good for that sort of stuff. I don't know why you think that adjusting the hue of a photo can give you information about constituent wavelengths of a beam, but you are wrong on that bit. You can modify a photo to show whatever you want. I can take a picture of a green laser and make it look like a rainbow. That doesn't mean that the green laser is a full-spectrum eximer or something crazy.

Thanks, ganjaman, for the example :beer:
 
yeah, I'm still waiting for someone to make a handheld argon first ;-)

Who knows, maybe you got lucky and got some strange crystal set for another f-doubled laser. All the crystals probably look about the same to the people manufacturing the huge batches of 'em...
 
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