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%.
Efficient generation and sorting of orbital angular momentum eigenmodes of light by thermally tuned q-plates / Karimi, Ebrahim; Piccirillo, Bruno; E., Nagali; Marrucci, Lorenzo; Santamato, Enrico. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 94:(2009), pp. 231124-1-231124-3. [10.1063/1.3154549]
Efficient generation and sorting of orbital angular momentum eigenmodes of light by thermally tuned q-plates
KARIMI, ebrahim;PICCIRILLO, BRUNO;MARRUCCI, LORENZO;SANTAMATO, ENRICO
2009
Abstract
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%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
