Laue and Fresnel lenses
Enrico Virgilli, Hubert Halloin, Gerald Skinner

TL;DR
This paper discusses gamma-ray focusing optics, specifically Laue and Fresnel lenses, highlighting their principles, properties, and potential for future high-sensitivity gamma-ray astronomy.
Contribution
It provides an overview of Laue and Fresnel gamma-ray lenses, detailing their working principles, properties, and feasibility studies for enhancing gamma-ray observations.
Findings
Laue lenses offer moderate focal lengths with basic imaging.
Fresnel lenses provide high-quality imaging but require extremely long focal lengths.
Feasibility studies suggest potential for future gamma-ray telescopes.
Abstract
The low-energy gamma-ray domain is an important window for the study of the high energy Universe. Here matter can be observed in extreme physical conditions and during powerful explosive events. However, observing gamma-rays from faint sources is extremely challenging with current instrumentation. With techniques used at present collecting more signal requires larger detectors, leading to an increase in instrumental background. For the leap in sensitivity that is required for future gamma-ray missions use must be made of flux concentrating telescopes. Fortunately, gamma-ray optics such as Laue or Fresnel lenses, based on diffraction, make this possible. Laue lenses work with moderate focal lengths (tens to a few hundreds of metres), but provide only rudimentary imaging capabilities. On the other hand, Fresnel lenses offer extremely good imaging, but with a very small field of view and a…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsGamma-ray bursts and supernovae · Advanced Semiconductor Detectors and Materials · Dark Matter and Cosmic Phenomena
