589nm vs. 594nm Yellow Wavelength Comparison

[Sowee7]

That's happened each time so far I've tried to get a 575nm or 577nm from Alibaba... I was hoping the 589nm would be a more available and mature product, fingers crossed!

The 575s and 577s got discontinued by lasence quite a long time ago

 

[liveforphysics]

If you want to sell your 577nm anytime my friend.... I would be honored and be first in line to buy.

 

[kecked]

To all as I’m getting messages. I’m holding on to the modules I have as no more look to be coming.

 

[Commander J. Bloodmaker]

Lasers are like pringles to me, I can't just have one. I have to play pokemon with them and catch them all!!!!!!

 

[skydives13]

Hi, I am George, am from Greece and there are no points for sale for yellow laser pointer so I bought one from other country.
I have no idea whether it is 589 or 593.5 nm colour, how can I know? Thanks a lot!

 

[kecked]

You need a known reference. Order some LEDs near each wavelength to compare. 594 will be more orange than 589 but both will look amber. Or get a spectrometer. Or build your own. Get a prism and measure the displacement. If you have a hene you can use that as a single calibration point.

Or enjoy it and don’t bother. If you want yellow look for tinker on eBay.com. And order a 574 from him. It looks very yellow. Tinkerco? has a longer name I forget search the forum.

DIY Low Cost Spectrometer

DIY Low Cost Spectrometer: Being a final-year undergraduate student majoring in physics, I believe that labs and practical experiments are just as important as the theory when it comes to subjects like physics. Lab sessions and experiments provide tangible results which often…

www.instructables.com

It really is as simple as basic math and measuring an angle. You really don’t need software.

https://web.pa.msu.edu/courses/2002summer/PHY252/Prism.pdf

This one is easiest to follow. Good luck. Personally I’d not bother and just enjoy it.

 

[Gryphon]

If you paid less than $100 it most likely 593.5nm if it was closer to $300-400 its most likely a 589nm

 

[paul1598419]

There are also 591nm lasers. I got one for ~ $75.

 

[CurtisOliver]

There are also 591nm lasers. I got one for ~ $75.

Which is 593.5nm in reality.

 

[paul1598419]

Which is 593.5nm in reality.

I'll have to check that with my spectrometer when I get the chance.

 

[CurtisOliver]

I'll have to check that with my spectrometer when I get the chance.

People have already checked and so have I. These are the classic 1064+1342nm SFG’s from years ago that have made an affordable resurgence. Ironic considering this method is actually less efficient and more unstable than the 589’s. And they were more expensive than 589’s too. These modules are still unstable at low temperatures but I haven’t ran into mode hopping like they normally suffer from.

 

[Gryphon]

True, all my "591's" are just 593.5's. On a spectrometer I can even see the green (532) and red (671 I think) lasing at the same time as the orange.

 

[paul1598419]

People have already checked and so have I. These are the classic 1064+1342nm SFG’s from years ago that have made an affordable resurgence. Ironic considering this method is actually less efficient and more unstable than the 589’s. And they were more expensive than 589’s too. These modules are still unstable at low temperatures but I haven’t ran into mode hopping like they normally suffer from.

Haven't noticed any mode hopping on mine. But, don't usually let it run more than a couple of minutes.

 

[CurtisOliver]

True, all my "591's" are just 593.5's. On a spectrometer I can even see the green (532) and red (671 I think) lasing at the same time as the orange.

Nice! SHG of both Nd:YVO4 lines. I see 532nm, but as for 671nm I haven’t observed it yet.

 

[ChromeCaviar]

This thread inspired me to attempt a wavelength measurement using a cheap Amazon spectroscope. I don't think I got an accurate measurement, but it was fun to try. The lasers are 488, 505 and 591 nominally.