Fabry-Perot-Interferometerplates
The plates are manufactured as pairs and are used as mirror substrates in Fabry-Perot interferometers with air space. This requires an extremely high parallelism of the inner surfaces. We offer pairs with parallelism of λ/50 and λ/100.
To keep spurious reflections out of the interference pattern the back surface is slightly wedged. The pairs are provided without coating and without holder.
The prices refer to pairs of plates.
Optical specifications
| material | fused silica |
| parallelism of the inner surfaces | λ/50, λ/100 |
| flatness of the inner surfaces | <λ/20 |
| flatness of the back surfaces | <λ/10 |
| wedge angle | 30' |
Standard dimensions
| Diameter | 25 mm | 30 mm | 40 mm | 50 mm | 60 mm | 70 mm |
| thickness | 6 mm | 8 mm | 10 mm | 15 mm | 15 mm | 18 mm |
| Art. No. | IPL 5.25 | IPL 5.30 | IPL 5.40 | IPL 5.50 | IPL 5.60 | IPL 5.70 |
Prices
| order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
|---|---|---|---|
| IPL 5.25 | 1724.- | 1494.- | 1310.- |
| IPL 5.30 | 2181.- | 1878.- | 1636.- |
| IPL 5.40 | 2687.- | 2314.- | 2015.- |
| IPL 5.50 | 3203.- | 2814.- | 2503.- |
| IPL 5.60 | 3689.- | 3241.- | 2882.- |
| IPL 5.70 | 5374.- | 4798.- | 4510.- |
Standard dimensions
| Diameter | 40 mm | 50 mm | 60 mm | 70 mm |
| thickness | 10 mm | 15 mm | 15 mm | 18 mm |
| Art. No. | IPL 10.40 | IPL 10.50 | IPL 10.60 | IPL 10.70 |
Prices
| order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
|---|---|---|---|
| IPL 10.40 | 3529.- | 3010.- | 2595.- |
| IPL 10.50 | 4742.- | 4050.- | 3497.- |
| IPL 10.60 | 5546.- | 4737.- | 4090.- |
| IPL 10.70 | 6550.- | 5848.- | 5497.- |
Price custom version
| option | order-no.: | additional price |
|
coating with partially refelcting silver layer reflectivity as per specification |
IPL 1.700 | 885.- |
| dielectric coatings | --- | on request |
| plates made from other materials | --- | on request |
| solid state etalons | --- | on request |
