Coatings

Filtering coatings (interference filters) are designed to separate the required spectral range from the continuous radiation spectrum.

Beam-splitting coatings are designed to separate the incident beam into reflected and transmitted ones with a given intensity ratio.

Depending on the purpose, filters are subdivided into blocking (cut-off), narrowband and bandpass.


Visible and NIR coatings


KU-1 (Quartz) - HR 1.06 μm; HT 0.6-0.95μm

  • 1.06 m mirror with concurrent 0.6-0.95 m high transmission.
  • The adhesion of the coating is checked with adhesive tape.
  • The coating has passed the climatic test (24 hours at a temperature of +50 degrees Celsius and a humidity of 98-99%) and mechanical durability (according to the instructions from paragraph 4.5.11 of MIL-C-675C).
  • The transmission of a quartz window with one surface coated is shown.

Beam splitter 0.65-1.25μm

  • Beam splitter for the range 0.65-1.25 μm on K8 glass.
  • The adhesion of the coating is checked with adhesive tape.
  • The coating has passed the climatic test (24 hours at a temperature of +50 degrees Celsius and a humidity of 98-99%) and mechanical durability (according to the instructions from paragraph 4.5.11 of MIL-C-675C).
  • The transmission of a K8 window with one surface coated is shown. Measurement is made at an angle of 21 degrees.

Bandpass filter 1.55μm

  • 1550 nm bandpass filter with additional 1064 nm transmission on silicon.
  • The adhesion of the coating is checked with adhesive tape.
  • The coating has passed the mechanical durability test (according to the instructions in paragraph 4.5.11 of MIL-C-675C).