Laser Power in Watt v.s. Real optical Power

Community Laser Talk
1

Simple Question for those how know the answer:
A Laser power is advertised as 20 Watt, what is the real optical power?

I like to hear from you experts.
and by the way, I love the LIGHTBURN software
Greetings, Martin Brandsma

2

Probably 3.5W to 5.5W

3

I have a 20W Neje laser and the optical output is 5.5W. Most would be in that range.Their 30W is 7.5W output and their 40W is 15W output.

4

Thank You for the information.

5

Thank You very much for the information.