Orbital angular momentum microlaser

• Autores: Pei Miao, Zhifeng Zhang, Jingbo Sun
• Localización: Science, ISSN 0036-8075, Vol. 353, Nº 6298, 2016, págs. 464-467
• Idioma: inglés
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• Resumen

  • Structured light provides an additional degree of freedom for modern optics and practical applications. The effective generation of orbital angular momentum (OAM) lasing, especially at a micro- and nanoscale, could address the growing demand for information capacity. By exploiting the emerging non-Hermitian photonics design at an exceptional point, we demonstrate a microring laser producing a single-mode OAM vortex lasing with the ability to precisely define the topological charge of the OAM mode. The polarization associated with OAM lasing can be further manipulated on demand, creating a radially polarized vortex emission. Our OAM microlaser could find applications in the next generation of integrated optoelectronic devices for optical communications in both quantum and classical regimes