Article
Engineering, Electrical & Electronic
Hauke Conradi, Almontaserbillah Hakmi, Moritz Kleinert, Lars Liebermeister, David de Felipe, Madeleine Weigel, Martin Kresse, Crispin Zawadzki, Bjoern Globisch, Norbert Keil, Ronald Freund, Martin Schell
Summary: In this study, second harmonic generation from 1550 to 775 nm was demonstrated in a polymer photonic integrated circuit via the hybrid integration of a periodically poled lithium niobate crystal. Fiber to fiber conversion efficiencies were found to be 0.03%/W for a continuous wave laser source and 100%/W for a femtosecond laser source. Additionally, third and fourth harmonic light at 517 and 388 nm was observed.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Shan Liu, Lei Wang, Leszek Mazur, Krzysztof Switkowski, Bingxia Wang, Feng Chen, Ady Arie, Wieslaw Krolikowski, Yan Sheng
Summary: Nonlinear photonic crystals (NPCs) with spatially modulated second-order nonlinear coefficients have been fabricated in ferroelectric crystals using the femtosecond laser writing technique. However, the efficiency of nonlinear interactions in 3D NPCs has been low. This study overcomes the fabrication challenges to achieve significant improvement in efficiency and presents a general approach of structural simplification.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Ronger Lu, Ruizhi Zhao, Xia Feng, Chao Zhang, Xuhao Hong, Yiqiang Qin, Yongyuan Zhu
Summary: A quasi-multivalue-encoding method has been proposed for constructing high-quality nonlinear holographic processes, aiming to reduce distortion and high-order diffraction effects compared to conventional binary encoding methods. The integrated ability to convert light frequency and reshape its wavefront with high resolution in any desired way is useful for various applications such as all-optical shaping, switching, imaging, and manipulation.
Article
Chemistry, Multidisciplinary
Yoonsoo Rho, SeokJae Yoo, Daniel B. Durham, DongJun Kang, Andrew M. Minor, Costas P. Grigoropoulos
Summary: Nonlinear optical response is a useful tool for studying the properties of materials, but its weak signal and limited reach make it difficult to probe deep-subwavelength-scale nonlinear optics. In this study, we propose a new method using an SHG-active plasmonic nanotip to achieve efficient second harmonic generation (SHG) nanoscopy. Our simulations suggest that enhancing the nonlinear response of the sample or suppressing the tip's response can lead to a high near-field SHG contrast, providing evidence of quantum mechanical nonlinear energy transfer. Furthermore, this technique can be used to study nanoscale corrosion and other physicochemical phenomena.
Article
Physics, Multidisciplinary
Karim Achouri, Andrei Kiselev, Olivier J. F. Martin
Summary: We present a frequency-domain modeling technique for second-order nonlinear metasurfaces, derived from the generalized sheet transition conditions (GSTCs). By extending the GSTCs to include effective nonlinear polarizations, the effective nonlinear susceptibilities of a given metasurface can be retrieved and its nonlinear scattering responses can be predicted under arbitrary illumination conditions. The proposed model can serve as a design platform for implementing complex nonlinear metasurface based applications.
NEW JOURNAL OF PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Jicheng Jin, Jian Lu, Bo Zhen
Summary: Second harmonic dipoles generated in a nonlinear photonic crystal slab can be completely nonradiative, resulting in no energy transfer from the fundamental frequency to the second harmonic even when the phase-matching condition is satisfied - a phenomenon known as resonance-forbidden second-harmonic generation. Through numerical simulation, two mechanisms for achieving this phenomenon have been identified: symmetry protection and parameter tuning. The finite-size effect and the topological origin of this phenomenon are also discussed.
Article
Optics
Pengcheng Chen, Chaowei Wang, Dunzhao Wei, Yanlei Hu, Xiaoyi Xu, Jiawen Li, Dong Wu, Jianan Ma, Shengyun Ji, Leran Zhang, Liqun Xu, Tianxin Wang, Chuan Xu, Jiaru Chu, Shining Zhu, Min Xiao, Yong Zhang
Summary: This work demonstrates a quasi-phase-matching (QPM) -division multiplexing holography using a three-dimensional (3D) nonlinear photonic crystal (NPC), capable of efficiently reconstructing target images at the second-harmonic (SH) wave and easily switching between reconstructed SH images by changing the QPM condition. The multiplexing capacity is scalable with the period number of 3D NPC, providing a promising strategy for highly efficient nonlinear multiplexing holography for high-security and high-density storage of optical information.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Review
Optics
Wagner Tavares Buono, Andrew Forbes
Summary: There is a growing interest in tailoring light in all its degrees of freedom, with a focus on structured light and nonlinear optics. The traditional linear optical elements have been mainly used for creating desired superpositions, but recent developments have highlighted the importance of spatial structure in nonlinear processes. This review offers a theoretical framework for understanding nonlinear optics in the context of structured light, discussing progress made and challenges ahead.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Yipeng Song, Hongwei Yu, Bingxuan Li, Xiaoqi Li, Yang Zhou, Yanqiang Li, Chao He, Ge Zhang, Junhua Luo, Sangen Zhao
Summary: Phase matching is essential for the high efficiency of second-order nonlinear optical (NLO) crystals. In this work, a novel deep-UV NLO crystal LAS is explored, which exhibits short absorption edge, small refractive index dispersion, and moderate NLO response, making it a promising candidate for deep-UV quasi-phase matching.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Bong-Rim Shin, Se-In Kim, Dongwook Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, In Cheol Yu, Fabian Rotermund, O-Pil Kwon
Summary: A new pi-conjugated cationic chromophore based on phenolic N-pyrimidinyl stilbazolium and its non-centrosymmetric crystals are reported in this study. The chromophore exhibits large molecular optical nonlinearity and co-existence in solution, while displaying a macroscopic second-order nonlinear optical response in the crystalline state.
OPTICS AND LASER TECHNOLOGY
(2022)
Review
Optics
Yong Zhang, Yan Sheng, Shining Zhu, Min Xiao, Wieslaw Krolikowski
Summary: Nonlinear photonic crystals are microstructures with quadratic nonlinearity that are used for the generation and control of coherent light at new frequencies. The recent invention of 3D nonlinear photonic crystals using femtosecond laser pulses has made it experimentally feasible to study intense light interaction with these crystals. Future development will focus on achieving properties and functionalities that are difficult or impossible with lower dimensional structures.
Article
Nanoscience & Nanotechnology
Jingyang He, Seng Huat Lee, Francesco Naccarato, Guillaume Brunin, Rui Zu, Yuanxi Wang, Leixin Miao, Huaiyu Wang, Nasim Alem, Geoffroy Hautier, Gian-Marco Rignanese, Zhiqiang Mao, Venkatraman Gopalan
Summary: This study reports the bulk single crystals of SnP2S6 with a large nonlinear optical susceptibility, a large laser-induced damage threshold, and a wide transparency range, making it an outstanding candidate for infrared laser applications.
Article
Optics
Peter A. Andrekson
Summary: In this paper, the author gives a brief overview of the applications of nonlinear four-wave-mixing in optical fibers and silicon-nitride waveguides. This includes ultrafast all-optical waveform sampling and 'noiseless' phase-sensitive optical amplification, which have shown the potential for signal recovery at very low optical powers.
Article
Optics
Jian Jiang, Hao Li, Gong-Ye Zhang, Xiao Shen, Zu-Xing Zhang
Summary: This paper presents a simple approach to generate dual-wavelength second harmonic with flexible conversion efficiency ratio in NQOS structure. By adjusting the incident position, the conversion efficiency ratio of the two wave peaks can be modified. The combination of type-0 and type-I quasi-phase matching allows for the generation of dual-wavelength SHG, with the interval between the two wave peaks continuously adjustable by operating temperature within a range of 0-352 nm.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Physics, Multidisciplinary
Cheng Yang, Chu-Ming Guo, Chuan Peng, Hai-Feng Zhang
Summary: A 1D nonlinear plasma photonic crystal (NPPC) structure composed of polarized ferroelectric crystals and nonlinear plasma periodic alternation is proposed and analyzed for second harmonic generation (SHG) using the transfer matrix method. Numerical simulations are performed to investigate the effects of incident angles and external control wave intensities on the total conversion efficiency (T-con) of the second harmonic wave (SHW). The importance of the relationship between the fundamental wave frequency and photonic band gap (PBG) in enhancing SHG is summarized, and optimal structure parameters for maximizing T-con are identified.
ANNALEN DER PHYSIK
(2023)
