Percival F Almoro

Summary

Country: Denmark

Publications

  1. ncbi request reprint Random phase plate for wavefront sensing via phase retrieval and a volume speckle field
    Percival F Almoro
    Department of Photonics Engineering, Danish Technical University Fotonik, Roskilde, Denmark
    Appl Opt 47:2979-87. 2008
  2. ncbi request reprint Interferometric evaluation of angular displacements using phase retrieval
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danish Technical University, Roskilde, Denmark
    Opt Lett 33:2041-3. 2008
  3. ncbi request reprint Fast-convergent algorithm for speckle-based phase retrieval and a design for dynamic wavefront sensing
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danish Technical University, Roskilde 4000, Denmark
    Appl Opt 48:1485-93. 2009
  4. ncbi request reprint Wavefront sensing using speckles with fringe compensation
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, DK 4000 Roskilde, Denmark
    Opt Express 16:7608-18. 2008
  5. ncbi request reprint Angular displacement and deformation analyses using a speckle-based wavefront sensor
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danish Technical University, Roskilde 4000, Denmark
    Appl Opt 48:932-40. 2009
  6. ncbi request reprint Numerical correction of aberrations via phase retrieval with speckle illumination
    Percival F Almoro
    Department of Photonics Engineering, Danish Technical University, Roskilde 4000, Denmark
    Opt Lett 34:521-3. 2009
  7. doi request reprint Phase microscopy of technical and biological samples through random phase modulation with a diffuser
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danmarks Tekniske Universitet, Roskilde 4000, Denmark
    Opt Lett 35:1028-30. 2010

Detail Information

Publications7

  1. ncbi request reprint Random phase plate for wavefront sensing via phase retrieval and a volume speckle field
    Percival F Almoro
    Department of Photonics Engineering, Danish Technical University Fotonik, Roskilde, Denmark
    Appl Opt 47:2979-87. 2008
    ..This DPP will not give rise to a fully developed speckle field, but knowing the statistics of the depth of the DPP will facilitate a rigorous treatment of the problem...
  2. ncbi request reprint Interferometric evaluation of angular displacements using phase retrieval
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danish Technical University, Roskilde, Denmark
    Opt Lett 33:2041-3. 2008
    ..Angular displacement between incident planar wavefronts is determined from the unwrapped phase difference, phase diffuser aperture diameter, and the light source wavelength. Numerical simulations confirm the experimental results...
  3. ncbi request reprint Fast-convergent algorithm for speckle-based phase retrieval and a design for dynamic wavefront sensing
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danish Technical University, Roskilde 4000, Denmark
    Appl Opt 48:1485-93. 2009
    ..A conceptual design for a dynamic wavefront sensor using arrays of beam splitters and detectors for parallel speckle recording is described...
  4. ncbi request reprint Wavefront sensing using speckles with fringe compensation
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, DK 4000 Roskilde, Denmark
    Opt Express 16:7608-18. 2008
    ..The numerical phase-error correction system described in this study can be extended to other types of phase errors such as those due to aberrations if optical elements are present in the setup or due to perturbations in the environment...
  5. ncbi request reprint Angular displacement and deformation analyses using a speckle-based wavefront sensor
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danish Technical University, Roskilde 4000, Denmark
    Appl Opt 48:932-40. 2009
    ..The technique offers simple, high resolution, noncontact, and whole field evaluation of three-dimensional objects before and after undergoing rotation or deformation...
  6. ncbi request reprint Numerical correction of aberrations via phase retrieval with speckle illumination
    Percival F Almoro
    Department of Photonics Engineering, Danish Technical University, Roskilde 4000, Denmark
    Opt Lett 34:521-3. 2009
    ..Numerical correction of the perturbed wavefront is performed based on rms error and the Strehl ratio. Restoration of the wavefront from a phase object with high spatial frequency content shows the effectiveness of our method...
  7. doi request reprint Phase microscopy of technical and biological samples through random phase modulation with a diffuser
    Percival F Almoro
    DTU Fotonik, Department of Photonics Engineering, Danmarks Tekniske Universitet, Roskilde 4000, Denmark
    Opt Lett 35:1028-30. 2010
    ..The technique offers a whole-field and high-resolution wavefront reconstruction of unstained microstructures. Phase maps of photoresist targets and human cheek cells are obtained to demonstrate the effectiveness of our method...