TOPTICA Photonics AG - A passion for precision -

Additional Isolators

Laser feedback protection

  • Efficient feedback protection for diode lasers
  • Wide wavelength range available: UV to IR
  • Faraday rotator plus high-quality polarization optics
  • Single-stage models: > 30 dB, 390 .. 2300 nm
  • Double-stage models: > 60 dB, 405 .. 1585 nm

An optical isolator transmits light in one direction only, by rotating the polarization axis of linearly polarized light. This is achieved by means of a crystal placed within a magnetic field (Faraday effect). The isolator thus prevents unwanted feedback into the laser source, which would else affect the laser’s coherence, or even damage the diode itself. TOPTICA offers single-stage and double-stage models for a wide wavelength range.