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祝世宁, P. Xu, S. H. Ji, S. N. Zhu, * X.Q. Yu, J. Sun, H.T.Wang, J. L. He, Y.Y. Zhu, and N. B. Ming
PHYSICAL REVIEW LETTERS, 2004, 93 (13): 133904-01~133904-04,-0001,():
-1年11月30日
A new type of conical second-harmonic generation was discovered in a 2D X(2) photonic crystal—a hexagonally poled LiTaO3 crystal. It reveals the presence of another type of nonlinear interaction—a scattering involved optical parametric generation in a nonlinear medium. Such a nonlinear interaction can be significantly enlarged in a modulated X(2) structure by a quasi-phase-matching process. The conical beam records the spatial distribution of the scattering signal and discloses the structure information and symmetry of the 2D X(2) photonic crystal.
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祝世宁, Zhao-Wei Liu, Yan Du, Jun Liao, Shi-Ning Zhu, Yong-Yuan Zhu, Yi-Qiang Qin, Hui-Tian Wang, Jing-Liang He, Chao Zhang, and Nai-Ben Ming
J. Opt. Soc. Am. B/Vol. 19, No.7/July 2002,-0001,():
-1年11月30日
Quasi-phase matching facilitates the phase matching of any parametric interaction by setting an appropriately modulated period. We propose a dual-periodic structure that is used in the construction of a frequencyconversion device. For example, we have designed and fabricated such a dual-periodic structure in a LiTaO3 crystal. Using a fundamental source at 1.064mm, we obtained ultraviolet radiation at 355nm and green radiation at 532nm simultaneously by frequency tripling and frequency doubling the fundamental source. Theoretically, this idea can be further extended to the design of a multiperiodic structure for achievement of more quasi-phase-matched processes in a single optical superlattice.
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【期刊论文】Parametric and cascaded parametric interactions in a quasiperiodic optical superlattice
祝世宁, Y. Du, S. N. Zhu, a) Y. Y. Zhu, P. Xu, C. Zhang, Y. B. Chen, Z. W. Liu, and N. B. Ming, X. R. Zhang, F. F. Zhang, and S. Y. Zhang
Appl. Phys. Lett., Vol. 81, No.9, 26 July 2002,-0001,():
-1年11月30日
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 666nm and blue at 443 nm simultaneously from the superlattice using a 532nm laser as a pump through these two processes mentioned above. The result confirms that some nonlinear frequency conversion processes occurring in a high-dimension x(2) nonlinear photonic crystal may be efficiently achieved in such a one-dimension quasiperiodic optical superlattice.
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