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Spatial modes of light provide a high-dimensional space that can be used to encode both classical and quantum information. Current approaches for dynamically generating and measuring these modes are slow, due to the need to reconfigure a…

We use a spatial light modulator in a diffraction tomographic system to assess the accuracy of different refractive index reconstruction algorithms. Optical phase conjugation principles through complex media, allows us to quantify the error…

光学 · 物理学 2019-10-02 Ahmed B. Ayoub , Thanh-An Pham , Joowon Lim , Michael Unser , Demetri Psaltis

Recently, the spectral manipulation of single photons has been achieved through spatial-temporal modulation of the optical refractive index. Here, we generalize this mechanism to massive particles, i.e. realizing the acceleration or…

光学 · 物理学 2022-04-26 Mai Zhang , Xie-hang Yu , Xin-Biao Xu , Guang-Can Guo , Chang-Ling Zou

Many components that are employed in quantum information and communication systems are well known photonic devices encountered in standard optical fiber communication systems, such as optical beamsplitters, waveguide couplers and junctions,…

量子物理 · 物理学 2011-03-25 Jose Capmany , Carlos R. Fernandez-Pousa

To enable the enhancement of few-cycle pulses in high-finesse passive optical resonators, a novel complementary-phase approach is considered for the resonator mirrors. The design challenges and first experimental results are presented.

We review the algebraic definition of the efficiency of a polarization modulation scheme, which is commonly adopted for solar and stellar spectro-polarimetry applications, and generalize it to allow distinct states of the modulation cycle…

天体物理仪器与方法 · 物理学 2026-02-17 Roberto Casini , David M. Harrington , Alfred G. de Wijn

We present a general and useful method to predict the existence, frequency, and spatial properties of gap states in photonic (and other) structures with a gapped spectrum. This method is established using the scattering approach. It offers…

介观与纳米尺度物理 · 物理学 2017-08-02 Eli Levy , Eric Akkermans

We consider the problem of demodulating M-ary optical PPM (pulse-position modulation) waveforms, and propose a structured receiver whose mean probability of symbol error is smaller than all known receivers, and approaches the quantum limit.…

量子物理 · 物理学 2011-03-22 Saikat Guha , Jonathan L. Habif , Masahiro Takeoka

This study revokes the performance of continuous phase modulation (CPM) able to generate a single-sideband (SSB) spectrum directly. This signal is analyzed in terms of modulation indices, pulse lengths, and pulse widths, all of which affect…

信号处理 · 电气工程与系统科学 2021-03-17 Karim Kassan , Haïfa Farès , D. Christian Glattli , Yves Louët

In this letter we report on the effects of pixel crosstalk on the experimental realization of a reported encoding method (Opt. Lett. 39, 1740 (2014)) with PA-LCoS SLMs. We found that, under Nyquist limit condition, about 70% of a single…

图像与视频处理 · 电气工程与系统科学 2019-03-15 Miguel Carbonell-Leal , Omel Mendoza-Yero

We present an approach that enables complete control over the amplitude, phase and arbitrary polarization state on the Poincar\'e sphere of an optical beam in a 4-f system with a spatial light modulator (SLM). The beams can be constructed…

光学 · 物理学 2015-10-29 Hao Chen , Tianxiang Huang , Jianping Ding , Guoqiang Li

Optical phenomena always display some degree of partial coherence between their respective degrees of freedom. Partial coherence is of particular interest in multimodal systems, where classical and quantum correlations between spatial,…

光学 · 物理学 2024-11-14 Charles Roques-Carmes , Shanhui Fan , David Miller

A class of multiwavelength Fabry-Perot lasers is introduced where the spectrum is tailored through a non-periodic patterning of the cavity effective index. The cavity geometry is obtained using an inverse scattering approach and can be…

Optical phase-space functions describe spatial and angular information simultaneously; examples include light fields in ray optics and Wigner functions in wave optics. Measurement of phase-space enables digital refocusing, aberration…

光学 · 物理学 2017-08-02 Hsiou-Yuan Liu , Jingshan Zhong , Laura Waller

Spatial light modulators (SLMs) are popular tools for generating structured light fields and have fostered numerous applications in optics and photonics. Here, we explore the limits of what fields these devices are capable of generating and…

光学 · 物理学 2021-02-03 Jonathan Pinnell , Valeria Rodriguez-Fajardo , Andrew Forbes

We study the Mott-insulator transition of bosonic atoms in optical lattices. Using perturbation theory, we analyze the deviations from the mean-field Gutzwiller ansatz, which become appreciable for intermediate values of the ratio between…

软凝聚态物质 · 物理学 2007-05-23 C. Schroll , Florian Marquardt , C. Bruder

Exploring the use of single-mode fibers (SMFs) in high precision Doppler spectrometers has become increasingly attractive since the advent of diffraction-limited adaptive optics systems on large-aperture telescopes. Spectrometers fed with…

天体物理仪器与方法 · 物理学 2015-12-02 Samuel Halverson , Arpita Roy , Suvrath Mahadevan , Christian Schwab

We present a liquid crystal method of correcting the phase of an aberrated wavefront using a spatial light modulator. A simple and efficient lab model has been demonstrated for wavefront correction. The crux of a wavefront correcting system…

天体物理仪器与方法 · 物理学 2009-10-11 Akondi Vyas , M. B. Roopashree , Ravinder Kumar Banyal , B. Raghavendra Prasad

In this article, we present a general mode-conversion algorithm allowing to build an optical system composed of an alternation of phase masks and free propagations. The originality of our approach lies in the introduction of free parameters…

计算物理 · 物理学 2020-06-08 Nicolas Barré

The analysis of optical pulse generation by phase modulation of narrowband continuous-wave light, and subsequent propagation through a group-delay-dispersion circuit, is usually performed in terms of the so-called bunching parameter. This…

光学 · 物理学 2009-11-11 Victor Torres-Company , Jesus Lancis , Pedro Andres