Laser Speckle Reducers

Optotune’s laser speckle reducers are nothing other than moving diffusers. But the way they are actuated is absolutely unique.

Applications:

  • Laser speckle reduction
  • Beam homogenization

Reluctance force LSR

The basis of this approach is a single thin steel structure that is brought into resonance by pulsing an actuating coil with current, which generates a strong reluctance force. Thanks to a high q-factor large amplitudes in the range of 800um are achieved at low power consumption even for heavy glass diffusers. Optotune’s LSR-4C speckle reducer has an aperture of 18.5×18.5 mm and is especially suitable for applications where high laser powers and large beam diameters are used. The diffusor is mounted in a thin steel frame. As part of a larger metallic structure the frame is set into motion by the reluctance force, generated by the oscillating magnetic field of a driving coil. If required, the LSR-4C can combine two oscillating diffusors rotated by 90°, realizing optimized despeckling in both directions. 

Advantages:

  • Compact design with integrated actuator

  • Works with different diffusor materials

  • Driving electronics integrated on flex-cable

  • Robust design for harsh environments

  • Long operational lifetime

Laser Speckle Reducers - LSR 4C
Laser Speckle Reducers - LSR 4C LLThe following table summarizes the main specifications of Reluctance force LSR’s:

Laser Speckle Reducers - LSR Spec 960x426

Full Spec

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