Optics

Optical Coatings

Coating Capabilities

LT-Pyrkal has a number of highly qualified and experienced scientists and technicians in the field of coatings. The Company possesses the appropriate equipment to perform dielectric and metallic coatings on a wide variety of substrate materials Technologies used are electron beam vacuum, sputtering vacuum and galvanic deposition. We are regularly investing for the upgrading experimentation. Particular importance to the reliability of our laser related optics and laser components We keep in touch with technological developments in the field of thin film coatings and we are enhancing our knowledge and broadening our production methods through continuous of our coating equipment as we are placing.

Coating Equipment and Technologies

Coatings encompass an increasingly broad field of optical and laser optical applications. Our expertise and equipment are mostly related to laser applications and correspondingly to coatings for high power lasers.

We have good experience in narrow-band V and W types of AR dielectric and metallic coatings, using electron beam, vacuum sputtering and galvanic technologies.

Our Coatings Unit is divided to the Chemical Preparation Section, the Coatings Section and the Measuring and Control section. Main equipment for dielectric AR and HR & metallic coatings

  • High Vacuum Deposition Worksation I (LEYBOLD AG A 700).
    Used for multi-layer narrow band AR and HR dielectric coatings. Equipped with dual electron beam guns for oxide deposition on substrates and semi-automatic control.
  • High Vacuum Deposition Worksation II.
    Used for multi-layer narrow band AR and HR dielectric coatings. Equipped with dual electron beam guns for oxide deposition on substrates and semi-automatic control. Ability to perform thin metallic film coatings by resistive evaporation.
  • High Vacuum Deposition worksation III.
    Used for multi-layer narrow band AR and HR dielectric coatings. Equipped with dual electron beam guns for oxide deposition on substrates and semi-automatic control.
  • One workstation for Electrochemical Deposition of metallic coatings from Silver, Gold, Copper and Nickel (galvanic coating).
  • Four workstations for High Vacuum Silver Deposition on AO elements from fused silica, for reflection prisms etc.
  • One workstation lor Vacuum Thermo-Compression for the diffusion bonding of thin crystals on fused silica cells to form the piezo-transducer of AO elements.

Principal Measuring Equipment

  • Spectrophotometer ZEISS Specord M-40.
    Wavelength region measurement with graphic output

Main Coating Materials Used

  • Dielectric coatings: Si02, MgO, Zr02
  • Metallic coatings: Al, Ag, Au, Cu, In,
  • Sputtering coatings: TiN2

Substrate materials used

All types of glasses, fluorides. Sapphire, undoped YAG, YLF and laser elements.

Products

V and W AR coatings, Interference mirrors, EO & AO cell coatings, cavity specular reflector coatings, polarizer coatings, beamsplitting coatings, wave plate coatings, partial mirrors, laser output couplers, metallic mirrors, MgF2/CaF2/YAG cavity mirrors, polarizers.