Materion Balzers Optics
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Laser Cavity Mirrors

High reflective mirrors for gas laser tubes

The stabilized laser beam nature makes the HeNe- and Argon-Laser well suited for metrology and interferometric applications. A pair of laser cavity mirrors, a High-Reflective (HR) mirror and an Out-Coupling (OC) mirror, are an essential part of all gas laser tubes. Materion Balzers Optics is specialised in designing and manufacturing high-performance laser cavity mirros with differnt sizes and different curvatures. Beside the ultra-accurate surface polishing in the range of 1.5Å, the coating designs offers side line supression and a spectral accuracy in the transmission band of <0,05%. But the key featur is the mode hopping control by finding of the dominated polarization. For this, these mirrors have to be designed and coated as a customized pair. Please ask for your own specialised configuration.

High reflective mirrors for gas laser tubes

Benefits

  • Low loss Cavity-Mirrors
  • Ultra-High reflective mirrors (HR)
  • Output-Coupler (OC) with defined transmittance
  • Mode-Hopping suppression*
  • Convex/Concave substrate curvature
  • Side-Line suppression


* valid for customized pairs of cavity mirrors


Applications

  • Stabilized Laser Systems
  • Laser Interferometers
  • Test & Measurement
  • Metrology
  • Spectroscopy

System schematic – LED projector system with Lightgate™

Technical Data

Wavelength range 250 nm–2000 nm

Reflectance R>99.995%

Outcoupler transmittance accuracy ±0.05%

Losses <50 ppm@633 nm

Substrate dimensions Ø6 x 4mm
or Ø7.75 x 4m

Surface roughness RMS<0.15 nm

Surface accuracy λ /10

Curvature accuracy ±1%

Wedge <15’

Mirror OC633 T=0.8-1,1%
Mirror OC450-530nm T=0.8-1.2%
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