Efficient generation and sorting of orbital angular momentum eigenmodes of light by thermally tuned q-plates

By Ebrahim Karimi, B. Piccirillo, E. Nagali, Lorenzo Marrucci, E. Santamato. 2009

274 citations recorded by the source corpus.

We present methods for generating and for sorting specific orbital angular momentum (OAM) eigenmodes of a light beam with high efficiency, using a liquid crystal birefringent plate with unit topological charge known as “q-plate.” The generation efficiency has been optimized by tuning the optical retardation of the q-plate with temperature. The measured OAM m=±2 eigenmodes generation efficiency from an input TEM00 beam was of 97%. Mode sorting of the two input OAM m=±2 eigenmodes was achieved with an efficiency of 81%.

Subfields: Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/f8cabdf9e75415a4f47eed0d07d724ef26a56a93

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In Atomic and Molecular Physics, and Optics

1. Lorenzo Marrucci
2. Fabio Sciarrino
3. Ebrahim Karimi
4. B. Piccirillo
5. S. Slussarenko
6. E. Nagali
7. E. Santamato

In Electronic, Optical and Magnetic Materials

1. Ebrahim Karimi
2. B. Piccirillo

Citations in the corpus

• Spin-to-orbital conversion of the angular momentum of light and its classical and quantum applications (2011, methodology): “So far, a thermal approach exploiting the strong dependence of the LC birefringence on temperature [38] and an electric one, exploiting the electric-field induced reorientation of the LC molecular alignment [67] have been demonstrated.”
• Advances in quantum cryptography (2019, unknown): “While q-plates can potentially be operated at GHz rates by using electrooptic tuning, these have yet to be demonstrated [275].”