RT Journal Article
T1 Far-field diffraction of linear chirped gratings
A1 Sánchez Brea, Luis Miguel
A1 Torcal Milla, Francisco Jose
A1 Buencuerpo, Jerónimo
AB We analyze the far-field diffraction pattern produced by linear spatial chirped gratings. An intuitive analytical interpretation of the generated diffraction orders is proposed for gratings with linear variation of the period and linear variation of the spatial frequency. Also, experiments using Gaussian beams and plane wave illumination are performed. The analytical expressions are compared to numerical and experimental results, showing a high agreement. Chirped gratings can be implemented in interesting applications: we analyze how they can be used as a deflector, since tunable direction of diffracted orders can be achieved by displacing laterally the grating with respect to the incident light beam. Also the angular width of diffraction orders can be controlled and chirped gratings can be used to generate uniform illumination over a controlled angular range. These two applications have also been experimentally shown.
PB Elsevier
SN 0030-3992
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/117032
UL https://hdl.handle.net/20.500.14352/117032
LA eng
NO L.M. Sanchez-Brea, F.J. Torcal-Milla, J. Buencuerpo, Far-field diffraction of linear chirped gratings, Optics & Laser Technology 107 (2018) 337–343. https://doi.org/10.1016/j.optlastec.2018.06.007.
NO Ministerio de Economía y Competitividad (España)
NO European Commission
NO Agencia Estatal de Investigación (España)
DS Docta Complutense
RD 17 abr 2025