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Transverse superresolution and axial extended focal depth realized by the tunable phase pupil filter

Liang Wei Yun Mao-Jin Wan Yong Kong Wei-Jin Wang Mei Liu Jun-Hai

Transverse superresolution and axial extended focal depth realized by the tunable phase pupil filter

Liang Wei, Yun Mao-Jin, Wan Yong, Kong Wei-Jin, Wang Mei, Liu Jun-Hai
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Publishing process
  • Received Date:  17 July 2007
  • Accepted Date:  24 August 2007
  • Published Online:  15 January 2008

Transverse superresolution and axial extended focal depth realized by the tunable phase pupil filter

  • 1. (1)济南大学光电材料研究所,济南 250002; (2)青岛大学物理科学学院,青岛 266071

Abstract: In order to overcome the drawback of the conventional pupil filters and realize the tunable superresolution of the optical system, a new type of tunable pure phase filter composed of a half-wave plate located between two quarter-wave plates is presented in this paper, in which the half-wave plate is made of two zones. The simulation results show that with such a pupil filter the tunable transverse superresolution as well as the axial extended focal depth of the optical system can be realized by rotating any zone of the half-wave plate.

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