Our precision AR coating service is engineered for high-performance optical components, including Ge components, infrared lenses, laser crystals (TGG/LBO/BBO/KTP), and precision prisms. We deliver tailored solutions to minimize surface reflection, maximize light throughput, and eliminate ghost images—critical for laser systems, infrared imaging, and precision optical instruments.

Description

This is the transmittance spectrum of a CaF₂ window with double-side AR coating (AR+AR), tested over the 3.7–4.8 μm MWIR band.

Average transmittance: 99.43% (excellent anti-reflection performance, with >99% transmittance across most of the range)
Small ripples/dips in the 4.0–4.3 μm range are most likely caused by CO₂ absorption in the test environment (not the sample itself).
Recommendation: Re-test with N₂/Ar purging of the spectrometer chamber to eliminate air interference.

CaF₂ AR+AR Coating(3.7-4.8μm)

Description

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