About the project

At Demcon Focal we have experience with adaptive optics in different applications, like atmospheric aberration correction and lens aberration correction in metrology systems. We use off-the-shelf Shack Hartmann sensors and deformable mirrors. The adaptive process can be described as follow:

  • A SH sensor samples the wavefront of a beam by means of a microlens array
  • The microlens array produces spots on detector
  • Sensor is readout using FPGA code, allowing fast responses
  • Deformable mirror is used to optimize the wavefront

SH-sensor

Together with TNO we work on the on the TOmCAT project. One of the innovative elements of TOmCAT is its ability to pre-correct the laser light with adaptive optics. When light moves between the surface of the Earth and space, it gets distorted due to the fluctuations in the atmosphere. TOmCAT measures the distortion of the received laser light from the satellite, and by applying the inverse of this distortion to the transmitted light, a robust communication link can be established. In order to enable this, high speed adaptive optics is required. For more information about this project, read the article of Bits & Chips or contact us.

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