Yellow Laser Experimentation

[euxenite]

Hello everyone, first post here. I'm an experimental physicist looking for some answers =)

Does anyone here have a Yellow laser, a green filter, and a red filter??

If they do.. could you tell me if you can filter out the collimated green or red laser and have the opposite initial laser emit?

Even better... do you have a spectrometer? if so please post what results you get.

Thanks in advance for any responses.

 

[pseudonomen137]

You mean a true yellow laser, or a RGY yellow laser? A true 593.5nm yellow laser is simply 593.5nm. You cannot filter this into red and green components because it doesn't have any. 593.5nm is its only component.

If you were to make a "yellow" beam by combining 532nm and 650nm or some other red, yes, you could use filters to split it back up into those components.

 

[euxenite]

I'm interested in both cases actually. I'd like to see something through a spectrometer more specifically to get an idea of it's curve in the 590-600nm range.

 

[euxenite]

from what I understand the yellow laser comes from 2 frequencies and 1064 and 1342nm
I'd like to see how stable the 593.5nm frequency is for consumer yellow lasers.

 

[pseudonomen137]

593.5nm is produced by "sum frequency generation" through a NLO with 1064 and 1342nm. However, it is not composed of them. You can use a spectrometer if you want, but regardless of what red/green/etc filter you stick in from of a 593.5nm laser, all you're gunna get is 593.5nm. The filter can decrease the power, but 593.5nm if 593.5nm is 593.5nm... end of story there. If you split 593.5nm into its component wavelengths, you get 593.5nm and 593.5nm

A combo of 532nm and 650nm will appear yellowish, but its still a combo 532nm and 650nm beam. If you stuck it on a spectrum analyzer you'd see a peak at 532nm and 650nm. It doesn't become a yellow wavelength though, it just APPEARS to be yellow to your eyes.

 

[euxenite]

What i'm mostly concerned about is how "strong" the yellow beam is at the 593.5nm range in comparison to a non interactive sum frequency mixed laser. As in if the curve peaks as strongly per mW as other lasers like a green laser. Thanks for the responses btw!

 

[Cyparagon]

That's actually a good question. You're trying to ask "what's brighter, 20mW of 594nM, or 5mW of 532nM combined with 15mW of 650nm," right?

 

[FrothyChimp]

20mW of 593.5nm will appear more stable on a spectrograph since the light is coherent. A combination of 650nm and 532nm will produce various standing waves as if one was modulating the other. Visually I don't suspect you could see any difference in brightness except that the eye is much more responsive to green wavelengths and since 532nm is a component of a mixed yellow it may appear a bit brighter than pure 593.5nm. I don't think it would be on an order large enough to be discernible, however.

 

[euxenite]

actually Cyparagon, that's another good question. But let me rephrase what i'm trying to ask. Every laser has a curve on a spectrometer where the peak is somewhere around the major wavelength. Take a look at this www lexellaser com/techinfo_wavelengths.htm to get an idea'ish of what i mean about that, you can see DPSS in there right at 532nm. Now what i'm interested in is the characteristics of the curve of the laser under a spectrometer only because i'm interested in how the differences of the actual curve of 2 lasers of equivalent power, say 2 5mW lasers one being DPSS and the other being the Yellow sum version. As in is the curve of the yellow laser just as strong or is it more "rounded out" than the green 532nm counterpart. For an interesting writeup look at this article too, though it does not list the yellow laser. www lexellaser com/techinfo_gas-ion.htm I should just purchase a yellow laser and try it out; just hoping for the prices to drop sometime soon. (sorry about the weird links, I'm not cool enough to link =X )

 

[euxenite]

Actually... I found my answers thanks to this review...

edmuseum candlepower us/tenth/rigel2.htm