- #1
AaronBurr
- 5
- 0
Thank you all for any help or advice you can give.
1. Homework Statement
What is the fabrication Wavefront error (WFE) of a mirror with a PV surface error of 1 um? Express your answer in terms of RMS waves at lambda = 0.633 um
WFE=2*SFE
I know to start by calculating the WFE. I know the SFE=1um
WFE=2*1um
WFE=2um PV
I don't know how to convert PV into RMS. Everything I've read says there is no set ratio between PV and RMS measurements. But that values from 3-5 are commonly used depending on the surface error. So I'm a little confused.
Thank you again for any help you can offer.
1. Homework Statement
What is the fabrication Wavefront error (WFE) of a mirror with a PV surface error of 1 um? Express your answer in terms of RMS waves at lambda = 0.633 um
Homework Equations
WFE=2*SFE
The Attempt at a Solution
I know to start by calculating the WFE. I know the SFE=1um
WFE=2*1um
WFE=2um PV
I don't know how to convert PV into RMS. Everything I've read says there is no set ratio between PV and RMS measurements. But that values from 3-5 are commonly used depending on the surface error. So I'm a little confused.
Thank you again for any help you can offer.