---
OA_type: closed access
_id: '21581'
abstract:
- lang: eng
  text: We demonstrate that nanophotonic scintillators based on three-dimensional
    (3D) photonic crystals can overcome the longstanding tradeoff between spatial
    resolution and light yield in X-ray imaging. By engineering supercollimation,
    which is light propagation without angular spreading, within the emission spectrum,
    we strongly shape the angular emission profile of the scintillator, dramatically
    reducing blurring at large thicknesses. Our theoretical and numerical results,
    using realistic scintillator and photonic crystal parameters, show that this improves
    the Detector Quantum Efficiency (DQE) by up to several orders of magnitude at
    high spatial frequencies, enabling sharper images and reduced X-ray dosages. This
    approach offers a new path toward high-resolution, low-dose X-ray imaging systems.
article_number: 'PC1391008 '
article_processing_charge: No
author:
- first_name: Sachin
  full_name: Vaidya, Sachin
  last_name: Vaidya
- first_name: Seou
  full_name: Choi, Seou
  last_name: Choi
- first_name: Charles
  full_name: Roques-Carmes, Charles
  id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  last_name: Roques-Carmes
- first_name: Marin
  full_name: Soljačić, Marin
  last_name: Soljačić
citation:
  ama: 'Vaidya S, Choi S, Roques-Carmes C, Soljačić M. Supercollimating photonic crystal
    scintillators. In: <i>High Contrast Metastructures XV</i>. Vol PC13910. SPIE;
    2026. doi:<a href="https://doi.org/10.1117/12.3079431">10.1117/12.3079431</a>'
  apa: 'Vaidya, S., Choi, S., Roques-Carmes, C., &#38; Soljačić, M. (2026). Supercollimating
    photonic crystal scintillators. In <i>High Contrast Metastructures XV</i> (Vol.
    PC13910). San Francisco, CA, United States: SPIE. <a href="https://doi.org/10.1117/12.3079431">https://doi.org/10.1117/12.3079431</a>'
  chicago: Vaidya, Sachin, Seou Choi, Charles Roques-Carmes, and Marin Soljačić. “Supercollimating
    Photonic Crystal Scintillators.” In <i>High Contrast Metastructures XV</i>, Vol.
    PC13910. SPIE, 2026. <a href="https://doi.org/10.1117/12.3079431">https://doi.org/10.1117/12.3079431</a>.
  ieee: S. Vaidya, S. Choi, C. Roques-Carmes, and M. Soljačić, “Supercollimating photonic
    crystal scintillators,” in <i>High Contrast Metastructures XV</i>, San Francisco,
    CA, United States, 2026, vol. PC13910.
  ista: Vaidya S, Choi S, Roques-Carmes C, Soljačić M. 2026. Supercollimating photonic
    crystal scintillators. High Contrast Metastructures XV. OPTO vol. PC13910, PC1391008.
  mla: Vaidya, Sachin, et al. “Supercollimating Photonic Crystal Scintillators.” <i>High
    Contrast Metastructures XV</i>, vol. PC13910, PC1391008, SPIE, 2026, doi:<a href="https://doi.org/10.1117/12.3079431">10.1117/12.3079431</a>.
  short: S. Vaidya, S. Choi, C. Roques-Carmes, M. Soljačić, in:, High Contrast Metastructures
    XV, SPIE, 2026.
conference:
  end_date: 2026-01-23
  location: San Francisco, CA, United States
  name: OPTO
  start_date: 2026-01-17
date_created: 2026-03-30T12:22:48Z
date_published: 2026-02-01T00:00:00Z
date_updated: 2026-05-05T10:53:00Z
day: '01'
doi: 10.1117/12.3079431
extern: '1'
language:
- iso: eng
month: '02'
oa_version: None
publication: High Contrast Metastructures XV
publication_status: published
publisher: SPIE
quality_controlled: '1'
status: public
title: Supercollimating photonic crystal scintillators
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: PC13910
year: '2026'
...