Terahertz optics

As part of a ready-made solution for terahertz imaging, Terasense offers TPX and PTFE lenses and optical systems, which operate in the THz range. Plastic plano-raised lenses are made of Polytetrafluoroethylene (Virgin White PTFE, Teflon®), which has a low dielectric constant of approximately 1.96 @ 520 GHz with an index of refraction of 1.4. The THz range can be communicated as the recurrence scope of 300 GHz to 10 THz or the wavelength scope of 30 μm to 1 mm.

Fig-12

Material: PTFE

  • Type: aspherical plano-convex condenser lense
  • Available diameter: 50 – 150 мм
  • Focal length: 50 – 300 мм
  • Diameter tolerance: +/- 1 mm
  • Clear aperture: >=80%
  • EFL tolerance: +/-5%
  • Surface quality, scr/dig 100/20
  • Surface accuracy, +/-0.1 mm
IMG_0234

Material: PTFE

  • Type: Two-lense optical system
  • Diameter: 120 mm
  • Distance between lenses: 85 mm
  • Effective focal length: 165 mm
  • Diameter tolerance: +/- 1 mm
  • Clear aperture: >=80%
  • EFL tolerance: +/-5%
  • Surface quality, scr/dig 100/20
  • Surface accuracy, +/-0.1 mm
thz_l_p1

Material: TPX

  • Type: plano-convex, bi-convex
  • Available diameter: up to 100 mm
  • Diameter tolerance: +/- 0.25 mm
  • Clear aperture: >=90%
  • EFL tolerance: +/- 1%
  • Surface quality (two-sided polishing), scr/dig 80/50
  • Surface accuracy: +/- 0.01 mm

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Terahertz optics

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