scholarly journals Efficient Laguerre–Gaussian mode conversion for orbital angular momentum resolved spectroscopy

2013 ◽  
Vol 308 ◽  
pp. 147-151 ◽  
Author(s):  
Y. Toda ◽  
K. Shigematsu ◽  
K. Yamane ◽  
R. Morita
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Mode Conversion ◽  
Gaussian Mode

High-dimensional orbital angular momentum entanglement concentration based on Laguerre–Gaussian mode selection

2013 ◽  
Vol 10 (9) ◽  
pp. 095201 ◽  
Author(s):  
Wuhong Zhang ◽  
Ming Su ◽  
Ziwen Wu ◽  
Meng Lu ◽  
Bingwei Huang ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Mode Selection ◽  
Entanglement Concentration ◽  
High Dimensional ◽  
Gaussian Mode

scholarly journals On-Chip Guiding of Higher-Order Orbital Angular Momentum Modes

Photonics ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 72 ◽  
Author(s):  
In Joon Lee ◽  
Sangin Kim
Keyword(s):  
Angular Momentum ◽  
Field Distribution ◽  
Orbital Angular Momentum ◽  
Rotational Symmetry ◽  
Higher Order ◽  
Waveguide Structure ◽  
Rotation Symmetry ◽  
Gaussian Mode ◽  
On Chip ◽  
Topological Charges

Higher-order orbital angular momentum (OAM) mode guiding in a waveguide which is suitable for on-chip integration has been investigated. Based on the relation between the Laguerre-Gaussian mode and the Hermite-Gaussian mode, it has been shown that two degenerate guided modes of π/2l-rotation symmetry can support the l-th order OAM mode. In order to mimic the rotational symmetry, we have proposed the waveguide structure of a cross-shaped core and designed a waveguide that can support OAM modes of ±1 and ±2 topological charges simultaneously at a wavelength of 1550 nm. Purity of the OAM modes guided in the designed waveguide has been assessed by numerically calculating their topological charges from the field distribution, which were close to the theoretical values. We also investigated the guiding of OAM modes of ±3 and ±4 topological charges in our proposed waveguide structure, which revealed the possibility of the separate guiding of those OAM modes with relatively lower purity.

Orbital angular momentum correlations with a phase-flipped Gaussian mode pump beam

2012 ◽  
Vol 14 (8) ◽  
pp. 085401 ◽  
Author(s):  
J Romero ◽  
D Giovannini ◽  
M G McLaren ◽  
E J Galvez ◽  
A Forbes ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Pump Beam ◽  
Gaussian Mode
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