Skip to main content
Solved

Wavefront map units

  • January 25, 2023
  • 3 replies
  • 991 views

Baraka

Hello,

I wanted to get the wavefront map of a cerain zernike coefficient representing an aberration. Is there a way to change the unit ‘WAVES’ into ‘mm’ or ‘nm’?

 

Best answer by Sandrine Auriol

The wavefront map is always given in waves.

View original
Did this topic help you find an answer to your question?

3 replies

Forum|alt.badge.img+2

The wavefront map is always given in waves.


Baraka
  • Author
  • Monochrome
  • 3 replies
  • January 30, 2023

Could you help me with this unit ‘Waves’ then as I don’t fully understand it? To be able to convert it to ‘mm’ for example, can I multiply it by the waelength of the source?


Forum|alt.badge.img+2

Hi @Baraka 

The wavefront map shows optical path differences between rays of a field and the chief ray of that same field at a given wavelength.

The path is measured with a unit of length, like mm and then converts to waves.

If your wavelength is for example 0.55um, then the conversion will be:

wave = 0.55um = 0.00055 mm

OPD in wave = OPD in mm / (0.00055 mm)


Reply


Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings