Generation of quasi-coherent cylindrical vector beams by leaky mirrorless laser

Tal Ellenbogen, Dongxing Wang, Kenneth B. Crozier

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate that cylindrical vector beams with radial and azimuthal polarization states can be generated by leaky emission from photoexcited molecules embedded in slab-optical-waveguides which are formed on thin metal films on glass. Mirrorless lasing action in the optical waveguide leads to an order-of-magnitude collapse of the emission energy bandwidth and an emission directionality enhancement exceeding threefold. This leads to the creation of fine rings of quasi-coherent light with radial and azimuthal polarizations. We study the effect of the leakage loss on the amplified spontaneous emission process and on the photon yield. We find a critical value of metal film thickness for the observation of mirrorless lasing action and optimal values for enhancing photon extraction.

Original languageEnglish
Pages (from-to)28862-28870
Number of pages9
JournalOptics Express
Volume20
Issue number27
DOIs
StatePublished - 17 Dec 2012

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