A5028721561- Random lasers and scattering media
- Orbital Angular Momentum in Optics
- Advanced Optical Sensing Technologies
- Optical Polarization and Ellipsometry
- Digital Holography and Microscopy
- Optical measurement and interference techniques
- Optical Coherence Tomography Applications
- Advanced Optical Imaging Technologies
- Neural Networks and Reservoir Computing
- Terahertz technology and applications
- Sparse and Compressive Sensing Techniques
- Advanced battery technologies research
- Quantum optics and atomic interactions
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Atomic and Subatomic Physics Research
Xi'an Jiaotong University
2019-2024
Université Paris Sciences et Lettres
2024
Laboratoire Kastler Brossel
2024
Centre National de la Recherche Scientifique
2024
École Normale Supérieure - PSL
2024
Sorbonne Université
2024
Orbital angular momentum (OAM)-carrying beams have received extensive attention due to their high-dimensional characteristics in the context of free-space optical communication. However, accurate OAM mode recognition still suffers from reference misalignment lateral displacement, beam waist size, and initial phase. Here we propose a deep-learning method exquisitely recognize modes under by using an alignment-free fractal multipoint interferometer. Our experiments achieve 98.35% recognizing...
Imaging at depth in opaque materials has long been a challenge. Recently, wavefront shaping enabled notable advance for deep imaging. Nevertheless, most noninvasive wavefront-shaping methods require cameras, lack the sensitivity imaging under weak optical signals, or can only focus on single “guidestar.” Here, we retrieve transmission matrix (TM) noninvasively using two-photon fluorescence exploiting single-pixel detection combined with computational framework, allowing to achieve...
Wavefront sensing is an essential tool in wide research areas. However, the auxiliary reference beam and pixel-array detector are indispensable most of wavefront schemes. Here, we introduce a method to simultaneously measure amplitude phase unknown complex using single-pixel detector. A checkerboard pattern used sample field beam, which makes sure that our scheme free from intensity distribution field. In experiments, various fields with discretized pixels 64 × 128 at corresponding pixel...
Based on a Fourier single-pixel imaging (SPI) technique and interference between an unknown field reference beam, we implement amplitude phase reconstruction of the complex field. In this Letter, use chessboard pattern to divide into signal parts. A high-speed digital micro-mirror device is used modulate relative fields, SPI method acquire spectrum We experimentally reconstruct 103×103-pixel with resolution 68.4 μm. The real-time wavefront detection also implemented in rate four frames per second.
Optical speckle fields with both non-Rayleigh statistics and nondiffracting characteristics in propagation are an important light source for many applications. However, tailoring either statistical speckles or only investigated independently previous studies. Here, we report the first observation of optical that remain diffraction-free over a long axial distance while keeping simultaneously. We further show enhancement Anderson localization speckles. The work presented here provides...
Typical methods to decode a complex orbital-angular-momentum (OAM) spectrum suffer from issues such as narrow OAM range, unstable interferometer, and long measuring time. In this Letter, we use single-beam interferometer measure the with single-pixel detector. The ranging -10 10 can be measured in 11 ms fidelity approach of 97.0%, experimentally. Our allows one characterize an unknown coherent field any basis, e.g., Laguerre-Gaussian (LG) basis is used for radial index measurement....
Imaging through scattering layers based on the optical memory effect (OME) concept has been widely investigated in recent years. Among many scenarios, it is very important to recover hidden targets with proper spatial distribution scene where multiple out of OME range exist. In this Letter, we put forward a method for multi-target object imaging. With help intensity correlation between structured illumination patterns and recorded speckle images, relative position all can be obtained...
Storing multimode transverse images in atomic media is crucial constructing large-scale quantum networks. A major obstacle of storing the thermal vapor distortion retrieved caused by diffusion. Here, we demonstrate combination genetic algorithm with phase-shift lithography method to construct optimal phase for an arbitrary image that can diminish effect Theoretical simulations and experimental results manifest images' resolution be substantially improved when carrying phases. Our scheme...
Imaging through an opaque scattering medium, such as biological tissue, is of broad interest for many applications from physics to life sciences. Measuring the transmission matrix (TM) medium a versatile tool this purpose. Previously, researchers are used improving image resolution by measuring gigantic TM with long sampling time. However, low and SNR reconstructed images still two obstacles adoption technique. The foveal centralis human eye produces sharper vision than that retina's...
The single-pixel imaging technique, which is significantly different from conventional multi-pixel imaging, utilizes the signal recorded by a detector and stream of structured illumination patterns to reconstruct an image. We design experimentally demonstrate real-time foreground system with fewer samples without priori sensing background performing incremental principal component analysis on online compressed sampling data. A fast ℓ1 algorithm adopted realize 10 frames per second image size...