We present an optical setup for generating a sequence of light pulses in which the orbital angular momentum (OAM) degree of freedom is correlated with the temporal one. The setup is based on a single q plate within a ring optical resonator. By this approach, we demonstrate the generation of a train of pulses carrying increasing values of OAM, or, alternatively, of a controlled temporal sequence of pulses having prescribed OAM superposition states. Finally, we exhibit an “OAM-to-time conversion” apparatus that divides different input OAM states into different time bins. The latter application provides a simple approach to digital spiral spectroscopy of pulsed light. © 2012 Optical Society of America
Time-division multiplexing of the orbital angular momentum of light / Karimi, Ebrahim; Marrucci, Lorenzo; DE LISIO, Corrado; Santamato, Enrico. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 37:(2012), pp. 127-129. [10.1364/OL.37.000127]
Time-division multiplexing of the orbital angular momentum of light
KARIMI, ebrahim;MARRUCCI, LORENZO;DE LISIO, CORRADO;SANTAMATO, ENRICO
2012
Abstract
We present an optical setup for generating a sequence of light pulses in which the orbital angular momentum (OAM) degree of freedom is correlated with the temporal one. The setup is based on a single q plate within a ring optical resonator. By this approach, we demonstrate the generation of a train of pulses carrying increasing values of OAM, or, alternatively, of a controlled temporal sequence of pulses having prescribed OAM superposition states. Finally, we exhibit an “OAM-to-time conversion” apparatus that divides different input OAM states into different time bins. The latter application provides a simple approach to digital spiral spectroscopy of pulsed light. © 2012 Optical Society of AmericaI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
