Electro-Optic Modulators

Electro-optic modulators (EOMs) are efficient and easy to use tools to modify the phase, frequency, polarization or amplitude of a free-space laser. In contrast to acousto-optic modulators the spatial mode of the laser beam remains unaltered. Therefore, EOMs are the ideal choice when several frequency components are required in a laser spectrum. For instance, in laser cooling repumper frequency generation, ion trapping and quantum optics, for spectral broadening to suppress stimulated Brillouin scattering (SBS) in high power fibers, and for heterodyne techniques, like FM Spectroscopy, Modulation Transfer Spectroscopy or Pound-Drever Hall (PDH) Laser Frequency Stabilization. The modulation spectrum of our electro-optic modulators ranges from DC-coupled phase shifters to high-Q, resonant EOMs in the kHz, MHz and GHz range. Large apertures and a range of selected crystals materials (AR-coated or Brewster-cut) permit the use of high power lasers at UV to IR wavelengths.