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Related Experiment Video

Updated: Jun 5, 2025

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

Plasmonic ultraviolet filter for fast-timing applications.

Ryosuke Ota¹, Soh Uenoyama¹

¹Central Research Laboratory, Hamamatsu Photonics K.K., 5000 Hirakuchi, Hamakita-ku, Hamamatsu City 434-8601, Japan.

Nanophotonics (Berlin, Germany)

|December 16, 2024

Summary

This summary is machine-generated.

Aluminum nanodisks effectively suppress slow UV emissions in barium fluoride scintillators for improved radiation detection. This method preserves fast emissions and timing information, enhancing detector performance without data loss.

Keywords:

barium fluoride plasmonic filter surface plasmon resonance time resolution

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Last Updated: Jun 5, 2025

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Area of Science:

Materials Science
Nuclear Physics
Optics

Background:

Barium fluoride (BaF2) is a key inorganic scintillator for X-ray and gamma-ray detection.
Fast timing applications require suppression of BaF2's slow ultraviolet (UV) emission (300 nm).
Current doping methods for slow component suppression risk losing valuable radiation interaction data.

Purpose of the Study:

To develop a novel method for suppressing slow UV emissions in BaF2 scintillators.
To maintain fast UV emissions (195, 220 nm) and preserve timing information.
To avoid information loss associated with traditional doping techniques.

Main Methods:

Proposed aluminum nano-disk-based plasmonic filters.
Utilized finite-difference time-domain (FDTD) simulations.
Conducted experimental validation of filter performance.
Performed coincidence time resolution simulations for gamma rays.

Main Results:

Aluminum nanodisks demonstrated over 90% suppression of slow UV components.
Fast UV emission components (195, 220 nm) were successfully maintained.
Simulations confirmed the filters' ability to preserve high timing resolution.
Experimental and simulation results showed strong agreement.

Conclusions:

Aluminum nanodisks serve as effective UV filters for BaF2 scintillators.
The proposed plasmonic filters enhance timing performance without sacrificing radiation data.
This technique maximizes the potential of BaF2 for fast-timing radiation detection applications.