# High-efficiency measurement of all orbital angular momentum modes in a light beam

@article{Rathore2016HighefficiencyMO, title={High-efficiency measurement of all orbital angular momentum modes in a light beam}, author={Haad Yaqub Rathore and Mumtaz Sheikh and Usman A. Javid and Hamza Ahmed and Syed Azer Reza}, journal={Journal of The Optical Society of America B-optical Physics}, year={2016}, volume={34}, pages={1444-1449} }

We present an experimental demonstration of a Laguerre–Gauss (LG) spectrum measurement technique using variable focus lenses that is able to measure the strengths of the constituent modes in an unknown incoming light beam with the highest possible efficiency. The experiment modifies the classical projective, phase flattening technique by including a variable-sized pinhole and a two-electronic-lens variable imaging system that is tuned for each mode to give the highest possible detection…

## 4 Citations

### Beam radius transformation of orbital angular momentum in free space optical communication system

- PhysicsOther Conferences
- 2018

In free space optical communication links, due to the fast divergence of orbital angular momentum (OAM) beam, the issue of aperture mismatch is very common. However, in order to realize the aperture…

### Astigmatic tomography of orbital-angular-momentum superpositions

- PhysicsPhysical Review A
- 2019

We use astigmatic transformations to characterize two-dimensional superpositions of Orbital Angular Momentum (OAM) states in laser beams. We propose two methods for doing this, both relying only on…

### Spatial optical mode decomposition using deep learning

- Computer ScienceOptical Engineering + Applications
- 2020

We demonstrate using a convolutional neural network (CNN) architecture such as Resnet20 how to perform complete Laguerre-Gauss (LG) decomposition of an unknown, incoming laser beam using only…

### Adaptive Optical Beam Control for Rangefinders and Delay Lines

- History
- 2018

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