| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Broadband Response of Second Harmonic Generation in a Two-Dimensional Quasi-Random Quasi-Phase-Matching Structure |
| MA Dong-Li, REN Ming-Liang, LI Zhi-Yuan**
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Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190
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| Cite this article: |
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MA Dong-Li, REN Ming-Liang, LI Zhi-Yuan 2011 Chin. Phys. Lett. 28 074218 |
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Abstract The broadband response of second harmonic generation (SHG) is experimentally observed in a two-dimensional (2D) quasi-random quasi-phase-matching (QPM) structure. A nonlinear conversion efficiency of more than 50% is obtained. Due to the line-type distribution of the reciprocal vector, the second harmonic wave (SHW) covering a broad frequency band is efficiently radiated in the shape of one single spot or three spots instead of a stripe. This is believed to be favorable for its practical application and paves the way for the use of ultrahigh-bandwidth light sources and devices in modern optical technologies.
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| Keywords:
42.65.Ky
42.70.Mp
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Received: 22 January 2011
Published: 29 June 2011
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.70.Mp
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(Nonlinear optical crystals)
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