We propose a plasmonic nanolaser based on a metal-insulator-semiconductor-insulator-metal (MISIM) structure, which effectively confines light on a subwavelength scale (∼λ/14). As the pump power increases, the proposed plasmonic nanolaser exhibits broadband output characteristics of 20 nm, and the maximum output power can reach 20 µW. Furthermore, the carrier lifetime at the upper energy level in our proposed structure is measured to be about 400 fs using a double pump-probe excitation. The ultrafast characteristic is attributed to the inherent Purcell effect of plasmonic systems. Our work paves the way toward deep-subwavelength mode confinement and ultrafast femtosecond plasmonic lasers in spaser-based interconnected, eigenmode engineering of plasmonic nanolasers, nano-LEDs, and spontaneous emission control.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.518240 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Realizing zero-threshold population inversion plasmonic doping.
Nanoscale
January 2025
Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China.
Lowering the population inversion threshold is key to leveraging quantum dots (QDs) for nanoscale lasing and laser miniaturization. However, optical realization of population inversion in QDs has an inherent limitation: the number of excited electrons per QD is bound by the absorbed photons. Here we show that one can break this population limit and realize near-zero threshold inversion plasmonic doping.
View Article and Find Full Text PDFHalf-wave nanolasers and intracellular plasmonic lasing particles.
Nat Nanotechnol
January 2025
Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA, USA.
The ultimate limit for laser miniaturization would be achieving lasing action in the lowest-order cavity mode within a device volume of ≤(λ/2n), where λ is the free-space wavelength and n is the refractive index. Here we highlight the equivalence of localized surface plasmons and surface plasmon polaritons within resonant systems, introducing nanolasers that oscillate in the lowest-order localized surface plasmon or, equivalently, half-cycle surface plasmon polariton. These diffraction-limited single-mode emitters, ranging in size from 170 to 280 nm, harness strong coupling between gold and InGaAsP in the near-infrared (λ = 1,000-1,460 nm), away from the surface plasmon frequency.
View Article and Find Full Text PDFNanolasers: More than a decade of progress, developments and challenges.
Nanophotonics
July 2024
School of Physics, The University of Sydney, Sydney, Australia.
As the demand for smaller and more compact lasers increases, the physical dimensions of laser diodes are already at the diffraction limit, which impairs this miniaturization trend and limits direct laser integration into photonic and especially nanophotonic circuits. However, plasmonics has allowed the development of a novel class of lasers that can be manufactured without being limited by diffraction, exhibiting ultralow energy consumption, small volumes, and high modulation speeds that could someday compete with their modern macroscale counterparts. Nevertheless, a wide variety of issues create roadblocks for further development and commercial adoption.
View Article and Find Full Text PDFPlasmonic-nanowire near-field beam analyzer.
Nanophotonics
March 2024
Laboratory of Integrated Opto-Mechanics and Electronics, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Article Synopsis
- Experimental near-field analysis of output beams from micro/nano-waveguides is crucial for designing nanophotonic devices, yet it hasn’t been demonstrated until now.
- The study introduces a plasmonic-nanowire beam analyzer using a single Au nanowire to scan near-field distributions, achieving a resolution of 190 nm and a collection efficiency of about 47.4%.
- This novel approach enables the first 3D characterization of spatial distributions from a metal nanowire output beam and showcases the ability to analyze complex multimodes in large nanoribbons, indicating potential applications in nanolasers and biosensing.
A CW-Pumped Dye Nanolaser With an Optimized Nanocavity.
Small
January 2025
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
Plasmonic nanolasers, which are promising coherent light sources for integrated photonics, super-resolution imaging, and ultrasensitive sensing applications, face the challenge of high thresholds due to inherent losses in plasmonic nanocavities. While considerable efforts have been made to improve the Q factor, typically quantified by the full width at half maximum (FWHM), intensity (ΔI) is another critical feature of plasmonic resonance. However, the combined influence of both the Q factor and resonance intensity of a plasmonic nanocavity on nanolasing threshold has not been sufficiently explored, as experimentally controlling one variable while keeping the other constant is challenging.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!