Verifying Laser Parameters

[MoNotts]

Hi,

I was wondering what methods exist to verify the laser parameters of a Nd:YAG laser. Basically if I'm firing on a sheet of metal is there a quick way to makes sure that frequency, speed and power are correct (the same as the laser claims them to be).
This might be a really basic question but I'd be really interested what ways you use to ensure the parameters are the same as the laser claims them to be.

Thanks a lot!

 

[HenryRollins]

Have you contacted the manufacturer of the laser and requested a print out or default set of parameters? That would be a good way to start.

-HR

 

[MoNotts]

Hi,

Thank you for your quick response. Yeah I have got all the default parameters. My question concerns more how I can verify them. E.g. if I'm setting my laser to a frequency of 40 kHz how can I verify that it is actually firing with 40 kHz and not with 38 or something similar.

I hope this is more clear now .

 

[JayMaechtlen]

Interesting - I'd guess you'll need some test equipment, and some service documentation.
Then look at the docs, and figure out where you can monitor the firing signal that drives the excitation system. (flashlamps, I imagine)

or, some way to look at the flash of the pulsed beam on some material and time that.
Monitor a Photodiode with a frequency counter?

For other parameters, it could be trickier. But in truth, why do you care if it is exactly some frequency?

regards
Jay

Jay Maechtlen

http://www.laserpubs.com/techcomm

 

[MoNotts]

Hi,

thanks for your suggestions. I'll have a look at that.

Urm, it's just for an experiment as this is a newly purchased laser and I had the feeling some parameters are not what they are supposed to be.

Thanks again!