- Thread starter DrSined
- Start date

Hi, simple question, What exactly mean value "Laser Power Stability (rms)" at DPSS laser module?

Please explain as detailed as possible.

Thank you.

Please explain as detailed as possible.

Thank you.

-Alex

Laser stability means how stable a laser is. For example, a laser with a stability of 10% will not drift more then 10mW's, while a laser with a stability of 1% will not drift more then 1mW :yh:

-Alex

-Alex

A 1W Laser with a stability of 10% will drift no more than 100mW. It's a percentage of total output.

Last edited:

A 100mW laser* with those stability numbers will drift no more than you say.

A 1W Laser with a stability of 10% will drift no more than 100mW. It's a percentage of total output.

A 1W Laser with a stability of 10% will drift no more than 100mW. It's a percentage of total output.

-Alex

Dangit!

-Alex

-Alex

Don't sweat it!

- Joined
- Mar 10, 2013

- Messages
- 2,823

- Likes
- 470

- Points
- 83

yes. basically if a laser says ">100mW 5% stability over 4 hours RMS" it means that its guarenteed to output at least 100mW average or better minimum with no more than a deviation of 5% total output power over 4 hours at a consistent ambient room temperature while running with adequate heat-sinking/cooling.

Last edited:

Mr. kaiser is confusing rms with peak. "5% rms" is COMPLETELY different from "5% peak." A 100mW 5% (rms) stability laser will vary considerably both **over** 105mW and **under** 95mW. I'm not going to try to explain rms in one forum post, but the easiest plain-English approximation is "average noise." The google can tell you all about rms if you want to know more.

Last edited:

- Joined
- Mar 10, 2013

- Messages
- 2,823

- Likes
- 470

- Points
- 83