Quantitative measurement of the orbital angular momentum of light with a single, stationary lens.
We show that the average orbital angular momentum (OAM) of twisted light can be measured simply and robustly with a single stationary cylindrical lens and a camera. Theoretical motivation is provided, along with self-consistent optical modeling and experimental results. In contrast to qualitative interference techniques for measuring OAM, we quantitatively measure non-integer average OAM in mode superpositions.
Samuel N
SN
Alperin
Robert D
RD
Niederriter
Juliet T
JT
Gopinath
Mark E
ME
Siemens