Chongfan Technology
News
08
2024
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11
Introduction to Recent Papers in ACS Photonics
Author:
1. Tensile strain GeSn microbridge laser with controllable emission wavelength for lithography
Photolithographically controllable emission wavelength
Tensile strain GeSn micro-bridge laserAuthor: Melvina Chen, Hyo-Jun Joo, Youngmin Kim, Eng Huat Toh, Elgin Quek, Zoran Ionic, Wei Du, Shui-Qing Yu, Donguk
Date：2024
6 NovemberAbstract: GeSn alloy is expected to become an on-chip light source. We demonstrated a stretched GeSn microbridge laser using geometric strain inversion technology (realized by a single lithography step). Our method allows multiple lasers to be fabricated on a single chip.
KeywordsGeSn alloy, tensile strain engineering, geometric strain inversion technique, emission wavelength, wavelength division multiplexing
2. Reconfigurable electro-optic field effect transistor (FET) based on ferroelectric electrostatic doping for light field programmable gate array.
Reconfigurable electro-optic field effect transistor based on ferroelectric electrostatic doping for optical field programmable gate arrayAuthor: Zhang Yong, Guo Feng, Luo Zhengdong, Tian Ruijuan, Yao Danyang, Chen Xiaoqing, Fang Cizhe, Gan Xuetao, Liu Yan, Hao Yue, Han
Root SpringDate： 2024
5 NovemberAbstractSilicon photonic integrated circuits are moving towards mass production, but current scale constraints require us to explore more compact and economical components, such as silicon photonic FPGAs.
The proposed device integrates ferroelectric-doped graphene into a silicon FPGA to achieve a compact, reconfigurable electro-optic device with non-volatile multi-level memory supporting 10 different storage levels.
Keywords: Silicon photonic integrated circuits, reconfigurable electro-optical devices, non-volatile multi-stage memory, programmable silicon photonics, electro-optical field programmable gate arrays.
3. Tunable light-induced liquid crystal retarder for all-optical diffraction deep neural network
Tunable light-induced liquid crystal retarders for all-optical diffraction deep neural networksAuthor: Long Quanzhou, Yao Lisheng, Shao Junjie, Yang Siyan, Zhou Lingxiao, Zhang Wanlong, Yuan
XiaocongDate： 2024
5 NovemberAbstract: This study proposes a 5-layer all-optical diffraction deep neural network (D2NN) using light-induced liquid crystal alignment technology, which realizes light-based computing with zero power consumption and high parallel processing capability.
D2NN achieves 94.17 percent simulation accuracy and 89 percent experimental classification accuracy on the MNIST dataset, highlighting its potential for practical applications.
Keywords: All-optical D2NN, passive diffraction layer, light-induced liquid crystal, optical neuron, alignment tolerance
Link： https://pubs.acs.org/doi/10.1021/acsphotonics.4c01284
4. Fast on-demand design of inverted all-dielectric supergratings for micro-terahertz molecular fingerprint sensing through deep learning
Fast on-demand design of inverted all-dielectric supergrid for trace terahertz molecular fingerprint sensing using deep learningAuthor: Xueying Liu, Yinong range, Yiming Yan, Qiang Niu, Li-Guo Zhao, Zhao greang Dong, Qing Huo Liu, Jinfeng Zhu
Date：2024
5 NovemberAbstract: This research introduces a deep learning architecture to design an inverted all-dielectric supergrating (IAM) specifically for trace terahertz (THz) fingerprint sensing.
The combination of IAM and angle multiplexing can excite the guided mode resonance in the wide THz band, which can significantly improve the detection performance.
Keywords: Metasurface design, terahertz (THz) fingerprinting, deep learning (DL), inverted all-dielectric supergrating (IAM), angle multiplexing
5. High-quality atomic manipulation technology Pancharatnam-Berry metasurface can be used for high-sensitivity miniature optically pumped magnetometers
Pancharatnam-Berry Hypersurface Pair High Sensitivity Miniature Optical Pump Magnetometer
High quality atomic manipulationAuthor: Jin Li, Shuo Sun, Xiaoxun Li, Yaoyao Feng, Yi Zhang, Xiangyu Huang, Pengcheng Du, Jiahao Zhang, Liang Chen, Angel S. Sanz, Luis L. Sanchez-Soto
Date：2024
5 NovemberAbstract: This research introduces a new atomic manipulation method using Pancharatnam-Berry metasurfaces, which can effectively convert 770 nm light into a circular polarization state while producing an ideal Gaussian distribution. This metasurface enables a highly sensitive miniature optically pumped magnetometer (OPM) with a sensitivity below 400 fT/Hz1/2.
KeywordsAtomic manipulation, optical pump magnetometer, circular polarization state, Pancharatnam-Berry metasurface, sensitivity
6. Solvent engineering strategy to synthesize multicolor fluorescent carbon dots for advanced solid state lighting applications
Solvent-engineering strategy synthesis of multicolor fluorescent carbon dots for advanced solid-state lighting applicationsAuthor: Qingxin Zeng, Haiyan Qi, Tao Jing, Jun Li, Siqi Shen, Hongxu Zhao, Yang Gao
Date：2024
5 NovemberAbstract: This study solves the challenge of using l-tryptophan and o-phenylenediamine as precursors to create tunable fluorescent carbon dots (CD) with narrow full width at half maximum (FWHM) and high fluorescence quantum yield (QY).
The resulting multicolor CDs (B-CD, YG-CD and R-CD) show potential in optoelectronic applications.
KeywordsTunable fluorescent carbon dots, fluorescence quantum yield, full width at half maximum, optical properties, optoelectronic applications
7. Dual-wavelength exciton-polaron condensation by relaxation of multiple vibrational quanta in an organic microcavity
Two-wavelength exciton polariton condensation by relaxation of multiple vibrational quanta in an organic microcavityAuthor: Yang Liuqing, Ma Xuekai, Tenglong, Huang Han, Ren Jiahuan, Gu Chunling, An Cunbin, Liao Bo, Fu Hongbing, Liao
QingDate： 2024
4 NovemberAbstract: This study demonstrates the experimentally observed double-branch vibrational quantum-assisted polaron condensation in an organic single-crystal-filled microcavity, emphasizing the importance of vibrational quantum relaxation in this process.
By modulating the thickness of the planar optical resonator, the energy of the two lower polaron branches is adjusted to match the energy of the two vibration modes, triggering condensation in the two branches with almost the same threshold. The results show that the effective energy relaxation of photogenic excitons to vibrational modes is conducive to the distribution of polarons in the ground state, paving the way for polychromatic polaron condensation and future laser display.
Keywords: Polaron, vibrational quantum, condensation, microcavity, exciton
8. Detecting spectral hole burning in non-Hermitian scattering: distinguishing between far-field interference and near-field coupling
Probing spectral hole burning in non-Hermitian scattering: Distinguishing far-field interference and near-field coupling
Author: Zhou Wenjie, Liu Jingfeng, Liu Renming, Zhu Juanfeng, Dmitrii Gromyko, Qiu Chengwei, Wu Lin
Date：2024
3 NovemberAbstract: This study develops a quantitative quantum model to analyze the scattering spectra of non-Hermitian systems, focusing on the coupling between near-field and far-field interactions, revealing complex spectral-hole-burning (SHB) patterns. The model quantitatively extracts the near-field coupling rate, non-radiative decay rate and radiative decay rate, and shows the interaction of these factors in the multimode system. By applying the model to the geometric engineering of silver dimers, the study established a dual-mode SHB library that provides general design guidelines for enhancing optical device performance through customized non-Hermitian scattering.
KeywordsScattering spectrum, non-Hermitian system, pattern recognition, near-field coupling, far-field interference
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