Back to Search
Start Over
Two-photon pumped spaser based on the CdS/ZnS core/shell quantum dot–mesoporous silica–metal structure.
- Source :
- AIP Advances; Apr2020, Vol. 10 Issue 4, p1-6, 6p
- Publication Year :
- 2020
-
Abstract
- The spaser (a plasmonic nanolaser) has rapidly advanced as a subwavelength light source candidate. Herein, we introduce a spaser based on a quantum-dot, mesoporous-oxide, and metal structure from top to bottom consisting of CdS/ZnS core/shell quantum dots, a mesoporous silica film (MSF), and an Au film, respectively. Two-photon pumping using femtosecond laser pulses at 800 nm creates amplified spontaneous emission at approximately 451 nm. The advantages of MSF as a dielectric gap layer are examined through numerical simulations. Measuring the dependence of the luminescence intensity on the average pump power confirms the occurrence of two-photon up-conversion luminescence. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 10
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 143007130
- Full Text :
- https://doi.org/10.1063/1.5143928