Acousto- and Electro-Optics

AOM

Acousto-optic modulators (AOM or Bragg cells) consist of a crystal transparent for the laser, a piezoelectric transducer and a supersonic absorber avoiding standing waves in the crystal. If voltage is applied on the piezoelectric transducer, supersonic waves develop modulating the refractive index so that power, direction and frequency of the laser beam can be controlled.

 

AOMs can be used for:

  • Q-switching of solid-state lasers
  • Producing ns pulses and ultrashort pulses
  • Active mode locking
  • External modulators, e.g., for laser communication systems
  • Pulse pickers to increase the pulse energy but lower the pulse repetition rate
  • Continuous power modulation or as a switch
  • Noise suppression

 

For AOMs, we offer crystals of TeO2, crystalline quartz and fused silica.

EOM

An electro-optic modulator (EOM) consists of a Pockels cell and other optical components such as polarizers. A Pockels cell is a non-linear crystal and can change the refractive index depending on the applied voltage. As a result, power, phase and polarization of the laser beam can be controlled.

EOMs can be used for:

  • Power modulation (e.g., for laser printers or optical communication)
  • Stabilization of the laser frequency
  • Q-switching of solid-state lasers
  • Active mode locking
  • Fast optical switch

For EOMs, we offer KDP, KTP, BBO, LiNbO3‐ und LiTaO3 crystals.

EOM

An electro-optic modulator (EOM) consists of a Pockels cell and other optical components such as polarizers. A Pockels cell is a non-linear crystal and can change the refractive index depending on the applied voltage. As a result, power, phase and polarization of the laser beam can be controlled.

EOMs can be used for:

  • Power modulation (e.g., for laser printers or optical communication)
  • Stabilization of the laser frequency
  • Q-switching of solid-state lasers
  • Active mode locking
  • Fast optical switch

For EOMs, we offer KDP, KTP, BBO, LiNbO3‐ und LiTaO3 crystals.