Is there a beam difference between 520nm and 525nm?

[QiQi]

Hello,
I wanted to ask if there is any beam difference between 520nm and 525nm
Does one have a tighter/better beam than the other? like different lenses or something?
because i want to buy a Sanwu 1.2W green laser but i have an option between the two
The 1.2W 520nm is 40$ cheaper than the 1.2W 525nm and i have no idea why
thanks in advance

 

[skijohn]

Yes, 5nm!

 

[Encap]

Yes, 5nm and also $40 difference. lol

Ask Sanwu about the beam quality of their products.
They know which diode and lens they use and what the beam specs are.

PS You have the costs backwards, the Sanwu 520nm 1.2W is $40 more than the 525nm --different wavelength hand held lasers have different associated diodes and costs + have different component and finished product specs.

 

[QiQi]

woops my bad,
alright i will ask sanwu
thanks for the info

 

[CurtisOliver]

IMO, if you own a 532 and want to make the most of a new wavelength then go for a 520nm. Then you will be able to observe a colour difference between them. As Encap said, it is not 100% what diodes are being used in both to determine whether they have noticeable difference in beam specs. It doesn't always have to be a different diode, Sanwu checks the wavelength and will separate low and high hitting diodes. They do this with the 488 and 492nm.

 

[gazer101]

Odd, the 525nm laser diode is actually cheaper than the 520nm one...

 

[CurtisOliver]

Might be a more available diode for them maybe?

 

[skijohn]

Might be a more available diode for them maybe?

Curtis, every time I see your avatar it makes me think of the scene from Futurama where Fry says "wow the 3D is great" and Leela says "mines not working"!

 

[RedCowboy]

Yes you can see the difference, the 525 is slightly more yellowish green but still very much green, now 505 is a beautiful emerald green, more blueish green but still very much green, I think 505 and 488 are a couple of my favorites next to red.

 

[skijohn]

Curtis, every time I see your avatar it makes me think of the scene from Futurama where Fry says "wow the 3D is great" and Leela says "mines not working"!

View attachment 72010
View attachment 72011

BTW this was meant to be in fun and is not a dig...

 

[Encap]

Here is a good DTR posted overview of the 525nm NUGM03 1W diode's atypical beam quality outputing 2 beams at same time projecting a square dot instead of the commonly seen rectangular output of blue diodes. + some good comments on other diodes as well by DTR and several other members

https://laserpointerforums.com/threads/nugm03-1w-525nm-laser-diode.104328/