Ultra-low absorption line of thin film coatings

Precision Photonics (PPC) has announced the availability of its ultra-low absorption line of thin film coatings.

Using in-house metrology and ion beam sputtered deposition PPC is able to produce anti-reflection coatings with losses less than 0.5ppm, and high-reflection coatings with losses less than 2ppm.

These losses are achieved with a measurement sensitivity of less than 0.1ppm for optical materials like fused silica. The sensitivity is attained using photothermal common path interferometry combined with proprietary calibration methods.

PPC will also provide measurement services to customers wishing to measure absorption in their own coatings or substrates. Two dimensional mapping of surfaces is also available.