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Optics Letters

Optics Letters


  • Vol. 21, Iss. 18 — Sep. 15, 1996
  • pp: 1415–1417

4Pi confocal optical system with phase conjugation

Y. Kawata, K. Fujita, O. Nakamura, and S. Kawata  »View Author Affiliations

Optics Letters, Vol. 21, Issue 18, pp. 1415-1417 (1996)

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We propose a 4Pi confocal system that incorporates a phase-conjugate mirror into the system to solve the alignment problem and automatically correct the spherical aberration associated with the conventional 4Pi confocal system when observing a thick sample. The proposed system is experimentally verified by use of cerium-doped barium titanate crystal as the phase-conjugate mirror. The full width of the central peak is ∼0.15 μm. We also theoretically verify the advantage of automatic correction of the spherical aberration by calculating the intensity distribution at the focal spot.

© 1996 Optical Society of America

Original Manuscript: March 7, 1996
Published: September 15, 1996

Y. Kawata, K. Fujita, O. Nakamura, and S. Kawata, "4Pi confocal optical system with phase conjugation," Opt. Lett. 21, 1415-1417 (1996)

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