SINGLE-SHOT MULTISPECTRAL WAVEFRONT SENSOR FOR LASER BEAM CHARACTERIZATION AND QUANTITATIVE PHASE BIO-IMAGING

SINGLE-SHOT MULTISPECTRAL WAVEFRONT SENSOR FOR LASER BEAM CHARACTERIZATION AND QUANTITATIVE PHASE BIO-IMAGING

 

All existing Wavefront sensors (WFS) can only measure several wavefronts by sequential image acquisition. Sequential multi-spectral WFS has several drawbacks: it is difficult to implement, expensive, and incompatible with single-pulse laser characterization. This innovative system now allows simultaneous wavefront shapes measurement at different wavelengths using the multi-spectral (broadband or multi-line) light beam. It relies on the recent development of a wavefront analyzer (DiPSI) based on the use of a simple diffuser that obviates all these drawbacks by performing spectral measurements simultaneously. This aspect is advantageous for a variety of applications such as optical metrology, laser metrology, quantitative phase imaging and ophthalmology.

 

Applications

  • Spatio-temporal characterization of ultra-short pulse laser
  • Single-shot 3D tomographic imaging for flow cytometry
  • Optical metrology, freeform optic, metasurfaces
  • Optical aberration measurements
  • Ophtalmology
  • Nanoparticle characterization

 

Competitive advantages

  • Based on DiPSI solution (Diffuser Phase Sensing and Imaging): simple, modular, broadband, high-sensitivity and high spatial resolution WFS
  • Easy to implement, modular and low cost by avoiding the use of many filters
  • Performs spatial and/or spectral measurements simultaneously, which facilitate its application to quickly evolving systems

 

Intellectual property

Patent application filled in March 2019

 

Keywords

Multi-spectral wavefront analyzer - Wavefront sensor (WFS) - Spatio-temporal wavefront analyzer - DiPSI - Quantitative Phase Imaging (QPI) - Ultra-short pulse laser

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