PR

Partial Reflection Subtypes

Reduce or split the incoming light

 


PR with fixed reflection / transmission ratio

PR : Single PR Coating

Constant reflection / transmission for one single wavelength or a narrow band

Find an example here and for an overview click here.


 

DPR : Double PR Coating

Constant reflection / transmission for two wavelengths, ratio can be optimized separately

Find an example here.


 

BBPR : Broadband PR Coating

Constant reflection / transmission for a broadband wavelength range

Find an example here.

 

 PR changes reflection / transmission ratio with AOI

VA : Variable Attenuator

Transmission can be varied continuously by changing the AOI (e.g. 0-45°), also available as Inversely Variable Attenuator (IVA)

Find examples here.

 

 PR changes reflection / transmission ratio with beam position

GOC : Gradient Output Coupler

Transmission can be varied continuously by shifting a rectangular plate across the beam (right-middle-left position)

Find examples here.

For PR coatings with areas of high transmission
see coating type "Filter".