Z.~W.~Liu

Publications (6)3.84 Total impact

• Article: Magnetic plasmon hybridization and optical activity at optical frequencies in metallic nanostructures

  H. Liu, D. A. Genov, D. M. Wu, Y. M. Liu, Z. W. Liu, C. Sun, S. N. Zhu, X. Zhang
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  ABSTRACT: The excitation of optical magnetic plasmons in chiral metallic nanostructures based on a magnetic dimer is studied theoretically. Hybridization of the magnetic plasmon modes and a type of optical activity is demonstrated at near-infrared frequencies. A linearly polarized electromagnetic wave is shown to change its polarization after passing through an array of magnetic dimers. The polarization of the transmitted wave rotates counterclockwise at incident light frequencies corresponding to the low energy and clockwise at the high energy magnetic plasmon state. A metamaterial made of a large number of coupled magnetic dimers could be utilized as a tunable optically active medium with possible applications in optical elements and devices.
  Phys. Rev. B. 08/2007; 76(7).
• Source

  Available from: ac.cn

  Conference Proceeding: Magnetic plasmon resonances and optical activity

  D. A. Genov, H. Liu, D. M. Wu, Y. M. Liu, Z. W. Liu, C. Sun, S. N. Zhu, X. Zhang
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  ABSTRACT: Novel type of optical activity due to magnetic plasmon resonances is demonstrated for a first time. A linearly polarized light is shown to change polarization after passing through a metamaterial made of coupled magnetic dimers.
  Quantum Electronics and Laser Science Conference, 2007. QELS '07; 06/2007
• Source

  Available from: circuit.ucsd.edu

  Article: Parametric and cascaded parametric interactions in a quasiperiodic optical superlattice

  Y. Du, S. N. Zhu, Y. Y. Zhu, P. Xu, C. Zhang, Y. B. Chen, Z. W. Liu, N. B. Ming, X. R. Zhang, F. F. Zhang, S. Y. Zhang
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  ABSTRACT: Quasi-phase-matching optical parametric and cascaded parametric processes in a two-component quasiperiodic superlattice were studied in theory and experiment. This letter demonstrates how to obtain red at 666 nm and blue at 443 nm simultaneously from the superlattice using a 532 nm laser as a pump through these two processes mentioned above. The result confirms that some nonlinear frequency conversion processes occurring in a high-dimension χ(2) nonlinear photonic crystal may be efficiently achieved in such a one-dimension quasiperiodic optical superlattice. © 2002 American Institute of Physics.
  Applied Physics Letters 08/2002; 81(9):1573-1575. · 3.84 Impact Factor
• Source

  Available from: ucsd.edu

  Article: Engineering of a dual-periodic optical superlattice used in a coupled optical parametric interaction

  Z.~W.~Liu, Y.~Du, J.~Liao, S.~N.~Zhu, Y.~Y.~Zhu, Y.~Q.~Qin, H.~T.~Wang, J.~L.~He, C.~Zhang, N.~B.~Ming
  J. Opt. Soc. Am. B. 01/2002; 19:1676-1684.
• Conference Proceeding: Frequency tripling a 1.064 μm laser by a dual-periodically poledLiTaO₃ crystal

  Z.W. Liu, S N Zhu, Y Y Zhu, J L He, C Zhang, H T Wang, N B Ming
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  ABSTRACT: Ultraviolet generation at 355 nm was achieved from a LiTaO₃ crystal with a dual-periodically domain-inverted structure by frequency tripling. Also green at 532 nm was simultaneously obtained by frequency doubling
  Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on; 02/2001
• Source

  Available from: circuit.ucsd.edu

  Article: A scheme to realize three-fundamental-colors laser based on quasi-phase matching

  Z.W. Liu, S.N. Zhu, Y.Y. Zhu, H. Liu, Y.Q. Lu, H.T. Wang, N.B. Ming, X.Y. Liang, Z.Y. Xu
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  ABSTRACT: A simultaneous generation of red light at 631 nm and blue light at 460 nm was realized, in single-pass quasi-phase-matched scheme, from two periodical optical superlattices in the same LiTaO3 crystal in series. Using a 532 nm laser as pump, the red light was generated at 631 nm as the signal of optical parametric process in the first superlattice, and the blue light at 460 nm was the sum-frequency mixing the idler and the pump in the second superlattice. Along with the remnant pump at 532 nm, red light, green light and blue light can be obtained from the superlattice system simultaneously. This may be an emulous scheme to realize a compact three-fundamental-colors laser in future.
  Solid State Communications.