A5025300323- Random lasers and scattering media
- Advanced Optical Imaging Technologies
- Orbital Angular Momentum in Optics
- Chaos-based Image/Signal Encryption
- Advanced Optical Sensing Technologies
- Mechanical and Optical Resonators
- Advanced Steganography and Watermarking Techniques
- Optical Wireless Communication Technologies
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Image and Video Quality Assessment
- Optical Coherence Tomography Applications
- Power Systems and Technologies
- Quantum optics and atomic interactions
- Housing, Finance, and Neoliberalism
- Biometric Identification and Security
- Banking stability, regulation, efficiency
- Digital Holography and Microscopy
- Advanced Sensor and Control Systems
- Embedded Systems and FPGA Design
- Advanced Algorithms and Applications
- Force Microscopy Techniques and Applications
- Economic Theory and Policy
- Quantum Information and Cryptography
- Spacecraft and Cryogenic Technologies
Hong Kong Polytechnic University
2017-2025
Griffith University
2024
Shaanxi Research Design Institute of Petroleum and Chemical Industry
2022-2024
Shaanxi Yanchang Petroleum (China)
2022-2024
North China University of Technology
2024
Zhejiang A & F University
2023
University of California, Berkeley
2022
EVRAZ (United Kingdom)
2022
Nankai University
2022
Huazhong University of Science and Technology
2022
We study the dynamics of a driven optomechanical cavity coupled to charged nanomechanical resonator via Coulomb interaction, in which tunable double optomechanically induced transparency (OMIT) can be observed from output field at probe frequency by controlling strength interaction. calculate splitting two windows, varies near linearly with coupling robust way against decay. Our double-OMIT is much different previously mentioned double-EIT or double-OMIT, and might applied measure strength.
The performance of ghost imaging (GI) is severely compromised by dynamic and complex scattering media in free space. In this Letter, we design a common-path GI (CPGI) setup with dual polarization environments. s-light p-light mutually perpendicular states are generated overlap space the designed optical path to correct series scaling factors induced media. Experimental results demonstrate that proposed method highly robust can achieve high quality Compared previous schemes, adopts simplified...
Microscopic imaging through complex scattering media is recognized to be challenging. Here, we report high-resolution single-pixel microscopic media. This developed via an integration of temporal corrections with enhance the quality reconstructed object images and achieve high resolution in environments. By adopting a fixed pattern as carrier, effect dynamic scaling factors induced by media, which disturb recorded light intensities, removed. Artificial targets biological specimens are tested...
Imaging with single-pixel detectors becomes attractive in many applications where pixelated are not available or cannot work. Based on a correlation between the probing patterns and realizations, optical imaging detector offers an indirect way to recover sample. It is well recognized that through dynamic complex scattering media challenging, scaling factors lead serious mismatches realizations. In this paper, we report self-corrected realize high-resolution object reconstruction using...
Optical techniques have boosted a new class of cryptographic systems with some remarkable advantages, and optical encryption not only has spurred practical developments but also brought insight into cryptography. However, this does mean that it is elusive for the opponents to attack systems. In paper, first time our knowledge, we experimentally demonstrate machine-learning attacks on interference-based encryption. Using models are trained by series ciphertext-plaintext pairs, an unauthorized...
In this Letter, we propose high-resolution ghost imaging (GI) through complex scattering media using temporal correction. We provide evidence that the theoretical description about GI based on spatially correlated beams is still incomplete and cannot work in scenarios. complete of correction beam correlations GI. The optical experiments demonstrate images can always be retrieved by rectified temporally corrected correlation algorithm even complex, dynamic, highly strong environments where...
Knowledge of the radio channel in urban environments is key importance many critical applications, such as wireless communication and autonomous driving. This study proposes a promising wave propagation model for complex scenarios. First, electrical parameters different object classes are estimated by utilizing deep-learning-based semantic segmentation applied to point cloud. Second, highly accurate 3-D geometrical electromagnetic (EM) environment obtained surface reconstruction. Finally,...
The distribution of anhydrite contributes to the formation high-quality dolomite reservoirs. However, lower part Lower Ordovician Majiagou Formation in central Ordos Basin shows significant natural gas potential despite anhydrite-depleted settings. Therefore, its mechanism is crucial for carbonate hydrocarbon exploration evaporite-depleted regions globally. Through integrated multidisciplinary analysis (petrography, cathodoluminescence (CL), X-ray diffraction (XRD) and carbon (C)-oxygen...
The existence of random media is challenging in optical imaging, as the existing approaches usually cannot work well when channel exhibits a certain level randomness. Here, we report an automated adaptive correction scheme for single-pixel imaging through media. An alternating projection method developed to reconstruct object from light intensities recorded by detector. A series scaling factors are incorporated into reconstruction correct wave distortions induced With introduced factors,...
We propose a system for realizing controllable optomechanically induced transparency (OMIT) and ponderomotive squeezing. In this system, an atomic ensemble driven by external optical field couples with the cavity in typical optomechanical cavity. When is coupling laser probe laser, we can produce switch adjust width of window flexibly manipulating strength between field. also investigate squeezing properties transmitted analyzing its spectrum. Interestingly, plays important role controlling...
Optical encryption has attracted wide attention for its remarkable characteristics. Inspired by the development of double random phase encoding, many researchers have developed a number optical systems practical applications. It also been found that computer-generated hologram (CGH) is highly promising encryption, and CGH-based possesses advantages simplicity high feasibility implementations. An input image, i.e., plaintext, can be iteratively or non-iteratively encoded into one several...
Optical encryption has provided a new insight for securing information; however, it is always desirable that high security can be achieved to withstand the attacks. In this Letter, we propose method via learning complex scattering media optical encryption. After recordings through media, designed model trained. The proposed uses an setup with experimentally record ciphertexts and generate keys. During decryption, trained its parameters applied as addition, various parameters, e.g., virtual...
Spectrum can be acquired by Hadamard transform, and the spectrum energy concentrates on upper-left corner according to chosen Walsh-ordering bases. Hence, measurement of main coefficients facilitate reconstruction objects. In this letter, we propose a method for directly calculating each coefficient using only single-step in single-pixel imaging (SPI) high-contrast object reconstruction. The proposed significantly reduce number measurements SPI. addition, an effective noise suppression...
Abstract Near‐infrared (NIR) organic photodetectors (OPDs), particularly all‐polymer‐based ones, hold substantial commercial promise in the healthcare and imaging sectors. However, process of optimizing their active layer composition to achieve highly competitive figures merit lacks a clear direction methodology. In this work, celebrity polymer acceptor PY‐IT into more NIR absorbing host system PBDB‐T:PZF‐V, significantly enhance photodetection competence, is introduced. The refined...
Optical imaging in scattering media and its applications are challenging meaningful. In this paper, we propose experimentally verify a new optical authentication method using structured-detection-based ghost (GI) media. Object wave is disturbed by multiple diffusers, then sequentially modulated series of random amplitude-only patterns embedded spatial light modulator (SLM). The passes through another medium, intensity measured single-pixel bucket detector without resolution. During the...
It is well recognized that it challenging to realize high-fidelity and high-robustness ghost transmission through complex media in free space using coherent light source. In this paper, we report a new method by generating random amplitude-only patterns as 2D information carriers physics-driven untrained neural network (UNN). The are generated encode analog signals (i.e., ghost) without any training datasets labeled data, used free-space optical channel. Coherent source modulated the...
In this paper, we propose a method of physically-secured high-fidelity free-space optical data transmission through scattering media using physically- and dynamically-generated scaling factors. Optical channel characteristics are explored, factors physically dynamically generated to serve as security keys in the developed system. The dynamic provide layer for transmission. To best our knowledge, it is first time generate system realize encryption. existing controlled by two devices, i.e.,...
In this paper, we propose a modified Gerchberg-Saxton (GS) algorithm to generate random amplitude-only patterns as information carriers in ghost diffraction. With the generated patterns, high-fidelity diffraction through complex scattering media can be realized with single-pixel detector. The GS adopts support constraint image plane, which is divided into target region and region. Fourier amplitude of spectrum scaled regulate sum function. A pattern encode pixel data transmitted using...
In this Letter, a new, to the best of our knowledge, scheme is proposed realize high-fidelity secured free-space optical information transmission through dynamic and turbulent media by encoding 2D carriers. The data are transformed into series patterns as A novel differential method developed suppress noise, random keys also generated. different number absorptive filters arbitrarily combined be placed in channel generate ciphertext with high randomness. It experimentally demonstrated that...