Third-harmonic generation of spatially structured light in a
quasi-periodically poled crystal
- URL: http://arxiv.org/abs/2204.04173v1
- Date: Fri, 8 Apr 2022 16:39:52 GMT
- Title: Third-harmonic generation of spatially structured light in a
quasi-periodically poled crystal
- Authors: Yan-Chao Lou, Zi-Mo Cheng, Yu-Xiang Yang, Zhi-Cheng Ren, Jianping
Ding, Xi-Lin Wang, Hui-Tian Wang
- Abstract summary: We show third harmonic generation of spatially structured light including vector optical fields in a nonlinear Sagnac interferometer.
Our results will enable to manipulate spatially structured light or photons at new wavelengths and carrying higher orbital angular momentum.
- Score: 2.892430579947594
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Nonlinear optical processes of spatially structured light, including optical
vortex and vector optical fields, have stimulated a lot of interesting physical
effects and found a variety of important applications ranging from optical
imaging to quantum information processing. However, high harmonic generation of
vector optical fields with space-varying polarization states is still a
challenge. Here we demonstrate third harmonic generation of spatially
structured light including vector optical fields, in a nonlinear Sagnac
interferometer containing a carefully designed quasi-periodically poled
potassium titanyl phosphate for the first time. The experimental results are in
good agreement with the theoretical predictions. Our results will enable to
manipulate spatially structured light or photons at new wavelengths and
carrying higher orbital angular momentum. Our approach has the potential
applications for the research of optical skyrmions and may open up new
opportunities to produce spatially structured entangled photons for quantum
communication and computation.
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