<635nm

[pyromancer]

Do any of you know of a red laser pointer that is less than 635nM but over 610nM? I'm looking for something a bit different.

Thanks

 

[Hemlock_Mike]

Maybe a 635 heated or cooled might shift a bit but brobably not that much. 610 is getting kinda pumpkin color !!

Mike

 

[pseudonomen137]

As Mike said, you could make a true 636nm diode really cold to get it a little less. There's also HeNe at ~632.8nm and a few other wavelengths such as a weak wavelength ~610. Other than that though, you don't have many real options.... yet

 

[likewhat]

I remember some people at a conference that were using a 650 nm diode that was cryogenically cooled so they could get it to 600 nm. I will try to find what they did and add it.

 

[Switch]

That sounds cool.Maybe we could dump an aixiz module in some liquid N[sub]2[/sub] to make some brighter red But if you get it as low as 600nm, I would think that's pretty orange.

 

[wooooooolazer]

i dont know about you but id be afraid to put my newly got laser in a thing of liquid nitrogen....

...lazer.... ;D ;D ;D

 

[Switch]

i dont know about you but id be afraid to put my newly got laser in a thing of liquid nitrogen....

...lazer.... ;D ;D ;D

You can just try it with a crappy 5mw diode....Don't know where to get liquid nitrogen though....anyone? :-?

 

[Benm]

Too bad i don't work in the chemistry labs anymore, there it was pretty easy to come by. Most chemistry and medical labs will have the stuff though, and it's not expensive. If it's just for a single experiment you could drive by and ask if you can dunk your laser in a dewar full, people might be insterested to see your laser change color

I wouldn't use a good laser for this though. The problem is not so much in dropping in in the n2, but what happens after you pull it out. Moisture from the air will freeze to it immediately, and could be difficult to get rid of later.

 

[Switch]

But you make some sort of custom cooling system that won't screw with the diode and lens....