Based on a variety of crystalline and amorphous materials, HI-Q WGM micro-resonators feature greater than 10⁸ optical quality factor.  They can operate as Fabry Perot cavities suitable for laser stabilization and optical filtering applications.  With just a few milli-meter in diameter, the stand-alone WGM micro-resonator offers a free spectral range (FSR) of 10-90 GHz and resonance contrast greater than 50%.  The cavity is compatible with a wide range of wavelengths from UV to IR.

The resonator is being offered as a stand alone high-Q and high finesse optical cavity product for use in diverse applications requiring high performance laser and optical filters. 


Wavelength: 1500 - 1600 nm (other bands available)

Optical Quality Factor: > 10⁸ 

Free Spectral Range: 10 GHz


Packaged: Temperature Stabilized with fiber or FSO in/out

Special Operating Band: From UV to MIR

High Quality Factor: Up to 10¹⁰


  • Ultra-High Unloaded Quality Factor
  • Wide FSR capability
  • UV-IR compatibility
  • Ultra-High Finesse
  • High contrast
  • Optional cleaved fiber accessory
  • CaF2 and MgF2 materials


  •  Laser Locking
  • Optical Comb Generation
  • Laser Noise Discrimination
  • Optical Filters
  • Non-linear Optics
  • Quantum Optics

 To request a quote, please email