Solid Etalons
Description
Solid Etalons typically have fused silica substrates with the material grade (e.g. UV-visible or IR) dependent on the spectral region. The faces are ground, polished, and figured typically to better than l/100 flatness with similar quality parallelism between the faces. Dielectric (or, rarely, metallic) coatings provide the reflectivity necessary for the required finesse.
Solid Etalons
Specifications |
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|---|---|
| Interferometer Configuration: | Not Specified |
| Light Source: | |
| Output Polarization: | Not Specified |
| RMS Repeatability: | Not Specified |
| RMS Precision: | <0.01 waves |
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Frequently Asked Questions
Deposited Etalons are used for intracavity laser wavelength tuning.
MicroEtalons are used for fiber optic communication applications such as DWDM (dense wavelength division multiplexing), line narrowing, and channel monitoring.
Solid Etalons typically have fused silica substrates with the material grade (e.g. UV-visible or IR) dependent on the spectral region.
Air-Spaced Etalons have appropriate grade fused silica (UV-visible or IR) substrates. Outside-face AR coatings and wedges on the substrates prevent extraneous interference patterns from forming. Spacers, optically contacted to the substrates, determine the parallelism of the mirrored surfaces and the etalon’s free spectral range.
Air-Spaced Etalons have spacers that determine the parallelism of the mirrored surfaces and the etalon’s free spectral range, while Solid Etalons have dielectric (or, rarely, metallic) coatings that provide the reflectivity necessary for the required finesse.