期刊
APPLIED PHYSICS LETTERS
卷 95, 期 20, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3266066
关键词
Fourier transform optics; light propagation; multiwave mixing; optical materials; optical phase matching; photonic crystals
资金
- Israel Science Foundation [960/05]
- Israeli Ministry of Science
We present experimentally the control of free space propagation of an Airy beam. This beam is generated by a nonlinear wave mixing process in an asymmetrically poled nonlinear photonic crystal. Changing the quasi-phase matching conditions, e.g., the crystal temperature or pump wavelength, alters the location of the Airy beam peak intensity along the same curved trajectory. We explain that the variation in the beam shape is caused by noncollinear interactions. Owing to the highly asymmetric shape of nonlinear crystal in the Fourier space, these noncollinear interactions are still relatively efficient for positive (nonzero) phase mismatch.
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