wavelengths
 

Gradient Output Couplers and Filters

Variables

A special machine setup is required to ma­nufacture gradient optics that allow the central wavelength to change with its position on the substrate. So it is possible to change the opti­cal properties without any beam displacement by shifting a rectangular plate across the beam.

Given tolerances show the minimum variation on a standard substrate 50x27 mm if the plate is shifted within about 40 mm (right-middle-left position).

Variable coatings
GOC
GOC
λ [nm]right→ left T =method 
193 1% → 70% MS  
532 85% → 25% IAD  
1064 25% → 75% IAD  

Gradient Output Coupler GOC
Changes the reflection-transmission-ratio.

GP
GP
λ [nm]right→ left T =method 
532 1% → 95% IAD GLP
1064 1% → 95% IAD GLP
  95% → 1% IAD GSP

Gradient Pass Filter GP
The incoming light passes through in one position and will be blocked in the other one, available as long pass GLP and short pass GSP.

If a GLP and GSP are used in combination, the resulting bandwidth can be varied in a large wavelength area.

GNF
GNF
λ [nm]right→ left T =method 
808-914 1% → 90% IAD  
976-1064  0.5% → 90% IAD  

Gradient Notch Filter GNF
Transmits one wavelength and blocks another one in left position and reversely in right position.

GIF
GIF
λ [nm]right→ left T =method 
476-514  on request IAD  

Gradient Interference Filter GIF
Gives the opportunity to select various wa­ve­lengths, e.g. for fast external change of multiline noble gas ion lasers.

All values are given for standard coatings. Customized coatings available for all types.

Coating methods available:

EBEIADIPMSIBS
GOC 193 nm /0°
[B-00810]GOC 193 nm /0°

193 nm: right → left position; T= 1% → 70% (MS-coating)

GOC 532 nm /0°
[B-05980]GOC 532 nm /0°

532 nm: right → left position; T = 85% → 25%
(IAD-coating)

GLP 532 nm /0°
[B-05986]GLP 532 nm /0°

532 nm: right → left position; T= 1% → 95%
(IAD-coating)

GSP 1064 nm /0°
[B-05984]GSP 1064 nm /0°

1064 nm: right → left position; T = 95% → 1%
(IAD-coating)

GNF 808-914 nm /0°
[B-05991]GNF 808-914 nm /0°

808 nm: right → left position; T = 90% → 1%;
914 nm: right → left position; T = 1% → 90%
(IAD-coating)

GIF 476-514 nm /0°
[B-06004]GIF 476-514 nm /0°

tolerances on request (IAD-coating)