Plasmonic laser with distributed feedback

Tanyi, E. K.; Mashhadi, S.; On, C.; Faruk, Omar; Harrison, Emily R.; Ногинова, Н.; Noginov, M. A.

doi:10.1063/1.5117875

Cited by 4 publications

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Realizing Anderson localization of surface plasmon polaritons and enhancing their interactions with excitons in 2D disordered nanostructures

Zhu

Hao

Peng

et al. 2020

Applied Physics Letters

View full text Add to dashboard Cite

Surface plasmon polaritons (SPPs) propagating on a metal–dielectric interface suffer from inevitable energy losses originating from metals, especially in a visible regime, which degrades the quality of SPP-based devices. However, if the size of the devices is sufficiently miniaturized, we can thereby limit the propagation length of the signals and effectively circumvent the problems of large propagation losses. Anderson localization is a possible approach to squeeze SPPs. In this Letter, we experimentally demonstrate the Anderson localization of SPPs at optical frequencies in two-dimensional (2D) nanostructures. By increasing the positional disorder of the silver nanohole arrays on a glass substrate, strong 2D localization of SPPs appears with an exponentially decreased electric field, reduced propagation length, and the rapid disappearance of the autocorrelation coefficient. Moreover, we manage to realize the localized SPP-exciton interactions in the 2D disordered silver nanoarrays combined with fluorescent dye molecules. Due to the disorder in the nanoarray, the collected photoluminescence from fluorescent dye molecules is enhanced by over three orders of magnitude compared to that on the silver film without nanostructures. Our study extends Anderson localization of SPPs at the visible regime to 2D disordered systems and provides a unique way to enhance light–matter interaction in SPP-based nanodevices.

show abstract

Realizing Anderson localization of surface plasmon polaritons and enhancing their interactions with excitons in 2D disordered nanostructures

Zhu

Hao

Peng

et al. 2020

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

Multiple-beam colloidal quantum dot lasers in a waveguide-grating-waveguide microcavity

Liu

Yin

Liu

et al. 2023

Applied Physics Letters

View full text Add to dashboard Cite

In this work, multiple-beam colloidal quantum dot lasers are achieved in a double waveguide-grating (waveguide-grating-waveguide, W-G-W) microcavity. The grating is fabricated simply using interference lithography, and CdSe/CdS/ZnS colloidal quantum dots (CQDs) are spin-coated as the gain to form an active waveguide-grating structure. The photoresist film, which is not completely etched to the bottom, provides another waveguide-grating structure. In the W-G-W structure, low-threshold multiple-beam laser output is realized under optical pumping with emission peaks at 664.6 and 645.2 nm. The oblique laser is derived from a quasi-propagation mode. The thresholds of the two laser modes are 22.7 and 28.3 μJ/cm2, respectively, and both laser modes are TE0 modes. In addition, the emission wavelengths of the two modes of the designed distributed feedback laser can be flexibly tuned by changing the thickness of the CQDs' waveguide layer. The presence of quasi-propagation modes provides another method for designing compact laser sources, which could help in the design of wireless communication networks, hyperspectral 3D sensing, and color laser displays.

show abstract