Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal

Chen, Pengcheng; Wang, Chaowei; Wei, Dunzhao; Xu, Xiaoyi; Li, Jiawen; Ma, Jinling; Ji, Shengyun; Zhang, Leran; Xu, Liqun; Wang, Tianxin; Xu, Cuixiang; Chu, Jiaru; Zhu, Shining; Xiao, Min

doi:10.1038/s41377-021-00588-5

Cited by 53 publications

(29 citation statements)

References 41 publications

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“…A recent development is the use of structured matter for non-linear control of structured light. This includes phase-matching for multiple wavelengths by 3D periodical polling in photonic crystals 210 and non-linear metasurfaces that combine wavelength conversion with wavefront control 211 and non-linear metalensing 212 . Spin-orbit interactions in metasurfaces 213 and conventional crystals 214 likewise has been cast in a new light through the prism of non-linear interactions.…”

Section: Higher-dimensional and Multiple Dof Classically Structured L...mentioning

confidence: 99%

Towards higher-dimensional structured light

2022

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Structured light refers to the arbitrarily tailoring of optical fields in all their degrees of freedom (DoFs), from spatial to temporal. Although orbital angular momentum (OAM) is perhaps the most topical example, and celebrating 30 years since its connection to the spatial structure of light, control over other DoFs is slowly gaining traction, promising access to higher-dimensional forms of structured light. Nevertheless, harnessing these new DoFs in quantum and classical states remains challenging, with the toolkit still in its infancy. In this perspective, we discuss methods, challenges, and opportunities for the creation, detection, and control of multiple DoFs for higher-dimensional structured light. We present a roadmap for future development trends, from fundamental research to applications, concentrating on the potential for larger-capacity, higher-security information processing and communication, and beyond.

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Section: Higher-dimensional and Multiple Dof Classically Structured L...mentioning

confidence: 99%

Towards higher-dimensional structured light

2022

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“…The phase-matching conditions involves not only material but also energy constrains. The periodic polling can not only enable frequency control 131,132 but when multiplexed it achieves phase-matching for multiple wavelengths in the same crystal 133 . Recently, a novel pattern in the periodic polling named quasi-periodic polling achieved simultaneous second and third harmonic generation 134 .…”

Section: Crystalsmentioning

confidence: 99%

Nonlinear optics with structured light

Buono¹,

Forbes²

2022

OEA

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The interest in tailoring light in all its degrees of freedom is steadily gaining traction, driven by the tremendous developments in the toolkit for the creation, control and detection of what is now called structured light. Because the complexity of these optical fields is generally understood in terms of interference, the tools have historically been linear optical elements that create the desired superpositions. For this reason, despite the long and impressive history of nonlinear optics, only recently has the spatial structure of light in nonlinear processes come to the fore. In this review we provide a concise theoretical framework for understanding nonlinear optics in the context of structured light, offering an overview and perspective on the progress made, and the challenges that remain.

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“…LNOI has become a rapidly growing and highly promising integrated photonic platform [ 6 ]. Numerous on-chip photonic devices based on LNOI have been reported recently, such as LN low-loss waveguides [ 7 ], high Q-factor microring resonators [ 8 , 9 ], Mach–Zehnder interferometer modulators [ 10 ], nonlinear optic devices [ 11 , 12 , 13 ], and metasurface-based devices [ 14 ]. Because of the electro-optic effect in LN, which allows the refractive index to vary upon application of an electric voltage, on-chip electrically tunable devices have been widely reported [ 1 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

On-Chip Optical Beam Manipulation with an Electrically Tunable Lithium-Niobate-on-Insulator Metasurface

et al. 2022

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Photonic integrated circuits (PICs) have garnered increasing attention because of their high efficiency in information processing. Recently, lithium niobate on insulator (LNOI) has become a new platform for PICs with excellent properties. Several tunable devices such as on-chip tunable devices that utilize the electric-optic effect of LN have been reported. However, an on-chip electrically tunable beam modulator that can focus or deflect the wave has not yet been developed. In this study, we designed an electrically tunable LNOI metasurface for on-chip optical beam manipulation. With a carefully designed local phase profile, we realized the tunable focusing and reflection functions on the chip. As the bias voltage varies, the focusing length can be shifted up to 19.9 μm (~13λ), whereas the focusing efficiency remains greater than 72%. A continuously tunable deflection can also be achieved efficiently within a range of 0–45°. The beam modulator enhances the ability to manipulate light on LNOI chips, which is expected to promote the development of integrated on-chip photonics.

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Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal

Cited by 53 publications

References 41 publications

Towards higher-dimensional structured light

Towards higher-dimensional structured light

Nonlinear optics with structured light

On-Chip Optical Beam Manipulation with an Electrically Tunable Lithium-Niobate-on-Insulator Metasurface

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