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Journal Articles Physical Review Letters Year : 2010

Isotropic diffraction-limited focusing using a single objective lens

Emeric Mudry
  • Function : Author
Eric Le Moal
Patrick Ferrand
Patrick C. Chaumet
  • Function : Author
Anne Sentenac
  • Function : Author

Abstract

Focusing a light beam through a lens produces an anisotropic spot elongated along the optical axis, because the light comes from only one side of the focal point. Using the time-reversal concept, we show that isotropic focusing can be realized by placing a mirror after the focal point and shaping the incident beam. This idea is applied to confocal microscopy and brings about a dramatic improvement of the axial resolution.
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Dates and versions

hal-00535900 , version 1 (13-11-2010)

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Emeric Mudry, Eric Le Moal, Patrick Ferrand, Patrick C. Chaumet, Anne Sentenac. Isotropic diffraction-limited focusing using a single objective lens. Physical Review Letters, 2010, 105 (20), pp.203903. ⟨10.1103/PhysRevLett.105.203903⟩. ⟨hal-00535900⟩
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