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Etalons
LightMachinery manufactures the world's finest solid and air spaced etalons. Our fluid jet polishing systems allow us to routinely create surfaces that are better than lambda/100 peak to valley.
Solid etalons, air spaced etalons, piezo tunable etalons, Gire Tournois etalons, LightMachinery has extensive expertise in the manufacturing and testing of all kinds of Fabry Perot etalons from 1mm square to 100mm in diameter. These devices require high quality, very flat optical surfaces and extreme parallelism to achieve high performance, making them a good match for the polishing and metrology at LightMachinery.
Etalons can be made from a wide variety of materials including; Fused Silica, Silicon and even Air. Use our simple web based etalon calculator to determine the thickness and coating reflectivity to meet your requirements.
- Etalon Calculator - Our on-line calculator let's you determine the etalon you need.
- Online Catalog - Several types of solid, air spaced and tunable etalons are available directly from our catalog.
- Specifying Custom Fabry Perot Etalons - Learn the theory of etalons
Recent Etalon Projects
2" diameter solid etalons, uniform in thickness to better than lambda/100 Visible fringes prior to tuning a recently completed Magnesium Fluoride 3 piezo air spaced etalon designed for use in the UV These are long solid silicon etalons, 25mm in diameter. The FSR of the etalons is 833MHz. The high index of the material creates a finesse of about 2 without any coatings. However the index also varies with temperature... A 10GHz air spaced etalon with 3 zerodur spacers optically contacted using epoxy free bonding. A very high finesse etalon with a 10mm clear aperture. This is a different view of the etalon shown above. A thin solid etalon 2mm x 4mm x 25 microns thick. Made from fused silica the thin etalon is surprisingly robust but a little tricky to package. Custom R&D Fabry Perot etalons, fresh off of the dicing machine. The etalons are about 1mm thick. The total block size is 2" x 2". This 1/2" air-spaced Fabry Perot etalon spacer is shown along side an interferometric view of the same spacer. The spacers need to be made to etalon tolerances since the spacer determines the separation and tilt between the two end plates. The small air spaced Fabry Perot etalon has now been assembled with a 50um air gap. A small piece of kapton covers the vent hole in the side of the spacer. Mirrors are attached using epoxy free bonding (optically contacted) Shown here next to a Canadian dime. The mirror reflection from the etalon can be seen inside. A block of piezo Fabry Perot etalons during the manufacturing process. Volume manufacturing techniques are utilized to achieve consistent high precision at a reasonable cost. Take a look at our online catalog of small piezo tunable etalons or call us to help configure a tunable etalon to meet your requirements A very large 80mm aperture, piezo tunable Fabry Perot etalon with end plates matched to lambda / 110 (about 6nm) over the entire aperture. This was an extremely challenging and rewarding project. Three piezo stacks allow the end mirrors to be trimmed for perfect alignment, then the FSR can be tuned or scanned through 9um's of movement. Perfect Try our simple web based etalon calculator to determine the thickness and coating reflectivity to meet your requirements. (large file, may take a few seconds to load) Several types of solid, air spaced and tunable etalons are available directly from our online catalog.
However do not hesitate to contact us to help specify your custom etalon or fill out the etalon quote request form.
The instrument also has a 70nm raised step over half the aperture, creating an offset fringe pattern. The piezo tuning is very smooth despite the load of the inch thick ultra-flat plates. A giant 60mm aperture piezo tunable Fizeau interferometer. End plates are matched to lambda/100 over the full aperture. This instrument uses the same method of 3 piezo stacks to allow the end mirror to be trimmed for perfect alignment and then the FSR can tuned or scanned through 9um's of movement. A side view of the instrument sitting on a rotary stage for inspection. The bottom end plate is cemented to the hollow barrel, the top plate is connected to the 3 piezo elements. We are very proud of this tunable etalon. One Fabry Perot etalon is 3mm thick the other is 10mm thick, both have 80% reflectivity on each surface. These large etalons are used in an R&D lab. A tunable Fabry Perot etalon uses piezo electric cylinders to adjust the size of the air gap and sweep the peaks of the etalon. Take a look at our online catalog of small piezo tunable etalons or call us to help configure a tunable etalon to meet your requirements Two different designs of micro-cavity air spaced etalons for 1550nm . Each etalon is about 3mm in size and more temperature insensitive than solid etalons. Bulk processing techniques allow these types of etalons to be manufactured in high volume at reasonable cost with epoxy free bonding (optical contacting) This optic has a 1 meter radius and is matched to another identical optic to form a confocal resonator (a long air spaced etalon with curved mirrors). Try our simple web based etalon calculator to determine the thickness and coating reflectivity to meet your requirements. Several types of solid, air spaced and tunable etalons are available directly from our online catalog.
However do not hesitate to contact us to help specify your custom etalon or fill out the etalon quote request form.
Information or Quote Request
Just fill out the form below to send us your quote request or click here to send us an email and you can attach a drawing.
