Variables
Subtypes
Change transmission/reflection with the angle or the beam position
Subtypes
VA : Variable Attenuator
Transmission can be varied continuously by changing the AOI (e.g. 0-45°), also available as Inversely Variable Attenuator (IVA)
Find an example here.
GOC : Gradient Output Coupler
Transmission can be varied continuously by shifting a
rectangular plate across the beam (right-middle-left
position)
Find an example here.
GP : Gradient Pass Coating
By shifting a rectangular plate across the beam, the incoming light passes through (right position) or will be blocked (left position), shown as Gradient Short Pass GSP, also available as Gradient Long Pass GLP
Find an example here.
GNF : Gradient Notch Filter
By shifting a rectangular plate across the beam, the band around λ1 passes through (right position) or will be blocked (left position) and reversely for λ2
Find an example here.
GIF : Gradient Interference Filter
By shifting a rectangular plate across the beam (left-right position), various wavelengths can be selected, e.g. for fast external change of multiline noble gas ion lasers
Find an example here.