Comments on "The active medium propagation device"

Bosch, B.G.; Fleming, P.L.

doi:10.1109/proc.1977.10527

Cited by 1 publication

(3 citation statements)

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“…The approach we developed in this work is applicable beyond radiation detection and is especially promising for enhancing phosphor screens that convert other types of input radiation into UV/visible light. Specifically, phosphor screens are commonly used in light sources such as LEDs, [ 59 ] electroluminescent displays, [ 60 ] and image intensifiers [ 4,61 ] —all now becoming promising candidates for novel enhancements using nanophotonic scintillators/phosphors.…”

Section: Discussionmentioning

confidence: 99%

“…The MTF plays an important role, as the detected image depends on its behavior in low and high spatial frequencies. [ 4 ] Specifically, the resolution of the structure is defined by the spatial frequency, where the MTF reaches 3% of its zero‐frequency amplitude. [ 46,47 ]…”

Section: Improving Imaging Performance Using Inverse‐designed Nanostr...mentioning

confidence: 99%

“…Converting ionizing radiation into visible light lies at the heart of a vast range of technologies: from medical imaging systems such as positron emission tomography (PET), computed tomography (CT), and X‐ray radiology, [ 1–3 ] to image intensifiers, [ 4 ] security scanners, [ 5 ] IR‐viewers, [ 6 ] and even particle detectors in high‐energy physics, [ 7 ] astrophysics, [ 8 ] and electron microscopy. [ 9 ] All these applications utilize scintillators or phosphors, which convert ionizing radiation into light.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Imaging Using Inverse Design of Nanophotonic Scintillators

Shultzman

Segal

Kurman

et al. 2023

Advanced Optical Materials

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Converting ionizing radiation into visible light is essential in a wide range of fundamental and industrial applications, such as electromagnetic calorimeters in high‐energy particle detectors, electron detectors, image intensifiers, and X‐ray imaging. These different areas of technology all rely on scintillators or phosphors, i.e., materials that emit light upon bombardment by high‐energy particles. In all cases, the emission is through spontaneous emission. The fundamental nature of spontaneous emission poses limitations on all these technologies, imposing an intrinsic trade‐off between efficiency and resolution in all imaging applications: thicker phosphors are more efficient due to their greater stopping power, which however comes at the expense of image blurring due to light spread inside the thicker phosphors. Here, the concept of inverse‐designed nanophotonic scintillators is proposed, which can overcome the trade‐off between resolution and efficiency by reshaping the intrinsic spontaneous emission. To exemplify the concept, multilayer phosphor nanostructures are designed and these nanostructures are compared to state‐of‐the‐art phosphor screens in image intensifiers, showing a threefold resolution enhancement simultaneous with a threefold efficiency enhancement. The enabling concept is applying the ubiquitous Purcell effect for the first time in a new context—for improving image resolution. Looking forward, this approach directly applies to a wide range of technologies, including X‐ray imaging applications.

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Section: Discussionmentioning

confidence: 99%

Section: Improving Imaging Performance Using Inverse‐designed Nanostr...mentioning

confidence: 99%