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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Image reconstruction using a photonic crystal based flat lens operating at 1.55 μm
Maxence Hofman1, Didier Lippens, Olivier Vanbésien
1Institut d’Electronique, de Microélectronique et de Nanotechnologie, UMR CNRS 8520, Université des Sciences et Technologies de Lille, Avenue Poincaré, BP 60069 59655 Villeneuve d’Ascq Cedex France.
Applied Optics
|October 22, 2010
Summary
Researchers developed a photonic crystal flat lens for detecting and imaging tiny objects. This lens can visualize subwavelength targets and complex metallic shapes, advancing optical imaging capabilities.
Area of Science:
- Optics and Photonics
- Materials Science
- Image Reconstruction
Background:
- Traditional lenses face limitations in resolving micrometer-sized objects.
- Photonic crystals offer unique optical properties for advanced lens design.
- Subwavelength imaging remains a challenge in optical microscopy.
Purpose of the Study:
- To demonstrate the efficacy of an optimized photonic crystal flat lens.
- To achieve target detection and image reconstruction of micrometer-sized objects.
- To investigate the imaging of subwavelength and complex metallic targets.
Main Methods:
- Utilized an optimized photonic crystal based flat lens.
- Employed numerical retrieval procedures inspired by tomography.
- Operated at a wavelength of 1.55 μm for target imaging.
Main Results:
- Successfully detected subwavelength sized targets.
- Reconstructed images of metallic objects with complex shapes.
- Investigated the correlation between reconstructed image quality and lens resolution.
Conclusions:
- The photonic crystal flat lens enables high-resolution imaging of small objects.
- Tomography-inspired methods are effective for image reconstruction with this lens.
- The study provides insights into the performance limits of flat lens resolution.
