Photonics

Technologies related to photonics allow for precise control of the interaction between light and matter in terms of emission, detection, absorption, transmission, amplification, analysis, and more.
Photonics is present in countless devices, such as optical instruments, optical fibers, touch-sensitive electronic displays, laser printing systems, autonomous vehicle sensors, and others.

What HEF offers:

Precision polishing:

  • Various substrates – silica, sapphire, silicon, germanium, ceramics, quartz, etc.
  • Multiple geometries – windows, mirrors, prisms, lenses, wave plates, filters, etc.
  • Surfaces up to 1000 mm in diameter.


  • Precision up to λ/20 for diameters smaller than 300 mm.


Lens manufacturing

  • Strength enhancement through chemical treatment
  • Hardening through heat treatment
  • Glass painting (screen printing)
  • Laser engraving and surface conditioning

Masking and lithography

  • Etching using different types of technologies – photolithography, lift-off, wet etching, laser
  • Masking and creation of complete optical components
  • On substrates with diameters from 50 to 200 mm
  • Resolution up to 1 µm in width and 0.15 µm in depth
  • Different types of substrates – gold, aluminum, silver, chromium, copper, nickel, etc.

Electroforming

  • Nickel deposition with thicknesses of 30 to 200 µm
  • Application in circles, slits and closed shapes
  • Coating for emission and reflection

Precision cutting

  • Technologies – laser, scoring cut, water jet, wafer cutting
  • Materials – glass, silicon wafers, metals, plastics
  • Thicknesses up to 0.05 mm
  • Lateral roughness up to 3 µm
  • Usinagem CNC


Coating with optical films

  • Deposition technologies – electron beam, ion assisted, sputtering, thermal CVD, evaporation
  • The deposited layers can be used to control light beams with wavelengths ranging from 200 nm (UV) to 20 nm (infrared)
  • Substrates – glass, crystals, chalcogens, metals, semiconductors, etc.
  • Types of treatment / coating
  • Anti-reflective, metallic, dielectric, beam splitter, filters, polarizer
  • Multispectral coating
  • Broadband and narrowband filters
  • Black coatings
  • Transparent conductive coatings (ITO)
  • Hydrophobic treatment
  • Coatings with a high laser damage threshold
  • Coatings resistant to harsh environments

HEF Technologies:

HEF’s photonics division comprises the following subsidiaries, which can work individually or in combination to offer innovative and efficient solutions for a wide range of demands:


• Abriga Technologies
• Stingy
• Recorded
• HEF Photonics Saint-Etienne
• Kerdry
• Neyco
• Optimask
• Photo Sciences
• Telic Company
• Agama Glass Technologies

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