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Amplified spontaneous emission from europium-based molecular complexes coupled to photonic crystal cavities

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0160179· OSTI ID:2404922
 [1];  [1];  [2];  [2];  [1];  [3];  [4];  [5]
  1. Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM)
  2. Ohio Univ., Athens, OH (United States)
  3. Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM); Arizona State Univ., Tempe, AZ (United States)
  4. Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM); Ohio Univ., Athens, OH (United States)
  5. Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM); Univ. of Chicago, IL (United States); Northwestern-Argonne Institute of Science and Engineering, Evanston, IL (United States)
Rare-earth ion-based materials bear many remarkable optical properties that render them highly appealing for lighting and quantum-related applications. However, their small oscillator strength and weak emission often pose limitations. Here, in this work, we synthesize and couple Eu(III)-based molecular complexes to nanobeam photonic crystals supporting air modes. A reasonable spatial overlap between the molecular complexes and cavity modes leads to an average spontaneous emission coupling efficiency of 0.19. Our pump power-dependent photoluminescence measurements evidence amplified spontaneous emission from the molecular complexes with an amplification threshold as low as 4.4 W/cm2, likely benefiting from the efficient coupling. These findings suggest that integrating rare-earth ion-based molecular complexes with photonic structures could be a viable approach for regulating their emission characteristics for particular applications.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2404922
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 6 Vol. 123; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (3)


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