Papers & References

Tunable third harmonic generation of vortex beams in an optical superlattice

GAEA / GAEA-2 Spatial Light Modulators
Adaptive Optics / Wavefront Control Beam Shaping / Beam Steering
Published on:
Authors: Yu Wu and Rui Ni and Zhou Xu and Yaodong Wu and Xinyuan Fang and Dan Wei and Xiaopeng Hu and Yong Zhang and Min Xiao and Shining Zhu
Abstract:

“We report generation of tunable vortex beams in the blue spectral range, with a 3.3 nm spectral tuning range, by frequency tripling of the near-infrared (IR) wave at around 1.34 um in a LiTaO3 optical superlattice. The nonlinear crystal used in this work has a chirped dual-periodical structure which can provide two expanded reciprocal vectors for tunable performance of the cascaded third harmonic generation (THG). The maximum THG efficiency reaches about 1.4%.”

Open Access

Publication: Optics Express
Issue/Year: Optics Express, Vol. 25, Issue 25, pp. 30820- 30826 (2017)
DOI: 10.1364/OE.25.030820
Link: https://doi.org/10.1364/OE.25.030820
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