Tunable topological charge vortex microlaser

Author:

Zhang Zhifeng1ORCID,Qiao Xingdu1,Midya Bikashkali2ORCID,Liu Kevin2,Sun Jingbo3ORCID,Wu Tianwei2,Liu Wenjing2ORCID,Agarwal Ritesh2ORCID,Jornet Josep Miquel4ORCID,Longhi Stefano56ORCID,Litchinitser Natalia M.3ORCID,Feng Liang12ORCID

Affiliation:

1. Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.

2. Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.

3. Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA.

4. Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA.

5. Dipartimento di Fisica, Politecnico di Milano and Istituto di Fotonica e Nanotecnologie del Consiglio Nazionale delle Ricerche, Piazza L. da Vinci 32, Milano I-20133, Italy.

6. Instituto de Fisica Interdisciplinar y Sistemas Complejos (IFISC), Consejo Superior de Investigaciones Científicas–Universidad de las Islas Baleares (CSIC-UIB), Palma de Mallorca, Spain.

Abstract

Optical vortices on demand Light has several degrees of freedom (wavelength, polarization, pulse length, and so on) that can be used to encode information. A light beam or pulse can also be structured to have the property of orbital angular momentum, becoming a vortex. Because the winding number of the vortex can be arbitrary, the channel capacity can be expanded considerably. Zhang et al. and Ji et al. developed nanophotonic-based methods for generating and electrically detecting light with arbitrary orbital angular momentum, a goal that has remained an outstanding challenge so far (see the Perspective by Ge). The nanophotonic platform provides a route for developing high-capacity optical chips. Science , this issue p. 760 , p. 763 ; see also p. 707

Funder

National Science Foundation

Army Research Office

King Abdullah University of Science and Technology

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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