Results 21 to 30 of about 801 (202)

A room temperature low-threshold ultraviolet plasmonic nanolaser [PDF]

, 2015
Constrained by large ohmic and radiation losses, plasmonic nanolasers operated at visible regime are usually achieved either with a high threshold (102–104 MW cm−2) or at cryogenic temperatures (4–120 K).
Sum, Tze Chien, Lieber, Charles, Li, Yat, Liu, Xinfeng, Qian, Fang, Xiong, Qihua, Zhang, Qing, Li, Guangyuan   +7 more
core   +3 more sources

Theory for bowtie plasmonic nanolasers

Optics Express, 2008
We develop a fundamental formulation for electrically-pumped plasmonic semiconductor nanolasers based on a metallic bowtie structure. Because of the negative dielectric constant of the metal at optical frequencies, the effective modal volume of the plasmonic mode can be compressed to the nanometer scale.
Shu-Wei, Chang, Chi-Yu Adrian, Ni, Shun-Lien, Chuang   +2 more
openaire   +3 more sources

Polarization-encoded color images for information encryption enabled by HfN refractory plasmonic metasurfaces. [PDF]

Nanophotonics
Abstract Polarization control plasmonic nanostructures provide a unique route to manipulate light–matter interactions at the nanoscale and are particularly powerful for information security applications, where polarization‐encoded color images can be used for optical encryption and anticounterfeiting. Conventional plasmonic materials such as Au and Ag,
Chu YC, Peng TY, Wang CY, Yeh SS, Chen JW, Lu YJ.   +5 more
europepmc   +2 more sources

Ultralong Temporal Coherence in a Solid-State Plasmonic Nanolaser [PDF]

Coherence is one of the most distinctive properties of lasers, which differentiates them from conventional light sources. Nowadays, there is a strong interest in the development of coherent sources at the nanoscale, namely nanolasers, for many advanced ...
Trevisani, Mirko, Pirruccio, Giuseppe, Ramezani, Mohammad, Piccotti, Diego, Mendoza Sandoval, Elizabeth, Cesca, Tiziana, Mattei, Giovanni, Gómez Rivas, Jaime   +7 more
core   +2 more sources

Facile Design of a Plasmonic Nanolaser [PDF]

Condensed Matter, 2017
A spaser consists of a plasmonic noble-metal nanostructure that acts as nanocavity, when incorporated or surface-coupled two-level emitters constitute the nanoscale gain medium. Suited two-level emitters are, for instance, laser dyes. Optical pumping may provide efficient excitation energy transfer between the two-level emitters in the gain medium and ...
Hans-Peter Solowan, Carola Kryschi
openaire   +3 more sources

Plasmonic-nanowire near-field beam analyzer [PDF]

Nanophotonics
Experimental near-field analysis of the output beams from the end faces of micro/nano-waveguide is very necessary, because important information such as spatial intensity distributions, mode orders, and divergence angles can be obtained, and are very ...
Peng Jian, Zhu Runlin, Gu Zhaoqi, Zhang Hongyu, Dou Lin, Ma Yanna, Gu Fuxing   +6 more
doaj   +2 more sources

Semiconductor nanowire plasmonic lasers

Nanophotonics, 2019
Semiconductor nanowires (NW) hold great promise for micro/nanolasers owing to their naturally formed resonant microcavity, tightly confined electromagnetic field, and outstanding capability of integration with planar waveguide for on-chip optoelectronic ...
Li Chun, Liu Zhen, Chen Jie, Gao Yan, Li Meili, Zhang Qing   +5 more
doaj   +2 more sources

Confocal polarization tomography of dielectric nanocavities. [PDF]

Nanophotonics
Abstract We employ polarization tomography to characterize the modal properties of a dielectric nanocavity with sub‐wavelength mode confinement. Our analysis of reflection spectra shows that the Fano‐lineshape depends strongly on the polarization in a confocal configuration, and that the lineshape can be transformed into a Lorentzian‐like peak for a ...
Schröder F, van Exter MP, Xiong M, Kountouris G, Wubs M, Kristensen PT, Stenger N.   +6 more
europepmc   +2 more sources

Plasmonic nanolaser for intracavity spectroscopy and sensorics [PDF]

Applied Physics Letters, 2017
We demonstrate intracavity plasmonic laser spectroscopy using a plasmonic laser created from a periodically perforated silver film with a liquid gain medium. An active zone of the laser is formed by a highly elongated spot of pumping. This results in a significantly more efficient diffusive mixing of dye molecules, which suppresses the effect of their ...
P. Melentiev, A. Kalmykov, A. Gritchenko, A. Afanasiev, V. Balykin, A. S. Baburin, E. Ryzhova, I. Filippov, I. A. Rodionov, I. A. Nechepurenko, A. V. Dorofeenko, I. Ryzhikov, A. P. Vinogradov, A. A. Zyablovsky, E. S. Andrianov, A. A. Lisyansky   +15 more
openaire   +3 more sources

Single-crystalline aluminum film for ultraviolet plasmonic nanolasers. [PDF]

Sci Rep, 2016
Chou BT, Chou YH, Wu YM, Chung YC, Hsueh WJ, Lin SW, Lu TC, Lin TR, Lin SD.   +8 more
europepmc   +3 more sources