2017•Nonlinear OpticsRequires access

Cascaded third-harmonic generation of an optical orbitalangular-momentum state through quasi-phase matching

Yong Zhang, Xinyuan Fang, Dunzhao Wei, Dan Wei, Rui Ni, Xiaopeng Hu, Zhida Gao, Yan‐Yan Song, Gang Zhao, Shining Zhu, Min Xiao

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Abstract

We report the cascaded conversion of orbital-angular-momentum (OAM) states through quasi-phase-matching (QPM) in 1D and 2D periodically poled LiTaO3 crystals. Multiple OAM modes with different colors are simultaneously generated by QPM second- and third-harmonic generations.

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Key concepts: Phase matching, Angular momentum, Quasi-phase-matching, Optics, Frequency conversion, Physics, Nonlinear optics, Phase (matter)