# Hermite-Gaussian mode sorter.

@article{Zhou2018HermiteGaussianMS, title={Hermite-Gaussian mode sorter.}, author={Yiyu Zhou and Jiapeng Zhao and Zhimin Shi and Seyed Mohammad Hashemi Rafsanjani and Mohammad Mirhosseini and Ziyi Zhu and Alan E. Willner and Robert W. Boyd}, journal={Optics letters}, year={2018}, volume={43 21}, pages={ 5263-5266 } }

The Hermite-Gaussian (HG) modes, sometimes referred to as transverse electromagnetic modes in free space, form a complete and orthonormal basis that have been extensively used to describe optical fields. In addition, these modes have been shown to be helpful in enhancing information capacity of optical communications as well as achieving super-resolution imaging in microscopy. Here we propose and present the realization of an efficient, robust mode sorter that can sort a large number of HG…

## 23 Citations

Quantum-limited estimation of the axial separation of two incoherent point sources

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Spatial mode demultiplexing has recently been proposed as a method to overcome the diffraction limits and can be used to precisely measure the transverse separation between two point sources. Here we…

Spatial mode detection by frequency upconversion.

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A new spatial mode detection technique based on the nonlinear optical process of sum-frequency generation is put forward, which can be used to transfer an image from the infrared band to the visible, which implies the efficient conversion of many spatial modes.

Fine structure of perturbed Laguerre-Gaussian beams: Hermite-Gaussian mode spectra and topological charge.

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We found that small perturbations of the optical vortex core in Laguerre-Gaussian (LG) beams generate a fine structure of the Hermite-Gaussian (HG) mode spectrum in the form of weak variations of…

Preliminary study on the modal decomposition of HermiteGaussian beams via deep learning

- Physics
- 2019

The Hermite-Gaussian (HG) modes make up a complete and orthonormal basis, which have been extensively used to describe optical fields. Here, we demonstrate, for the first time to our knowledge, deep…

Superresolution Linear Optical Imaging in the Far Field

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The resolution of optical imaging devices is ultimately limited by the diffraction of light. To circumvent this limit, modern super-resolution microscopy techniques employ active interaction with the…

Modal analysis of structured light with spatial light modulators: a practical tutorial.

- PhysicsJournal of the Optical Society of America. A, Optics, image science, and vision
- 2020

A practical tutorial on how to perform an efficient and effective optical modal decomposition, with emphasis on holographic approaches using spatial light modulators, highlighting the care required at each step of the process.

Sub-Rayleigh characterization of a binary source by spatially demultiplexed coherent detection

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We investigate theoretically coherent detection implemented simultaneously on a set of mutually orthogonal spatial modes in the image plane as a method to characterize properties of a composite…

Sub-Rayleigh characterization of a binary source by spatially demultiplexed coherent detection.

- PhysicsOptics express
- 2021

The presented algorithm is shown to make a nearly optimal use of the measured data in the sub-Rayleigh region and to provide super-resolving capability for a high ratio of signal to detection noise (SNR).

Quantitative orbital angular momentum measurement of perfect vortex beams

- PhysicsOptics Letters
- 2019

Perfect (optical) vortices (PVs) have the mooted ability to encode orbital angular momentum (OAM) onto the field within a well-defined annular ring. Although this makes the near-field radial profile…

Fast modal analysis for Hermite-Gaussian beams via deep learning.

- PhysicsApplied optics
- 2020

This method offers a fast, economic, and robust way to acquire both the mode amplitude and phase information through a single-shot intensity image of HG beams, which will be beneficial to the beam shaping, beam quality evaluation, studies of resonator perturbations, and adaptive optics for resonators of solid-state lasers.

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