We introduce and demonstrate a novel concept of frequency-resolved wavefront characterization. Our approach is particularly suitable for high-harmonic, extreme-UV (XUV) and soft X-ray radiation. The concept is based on an analysis of radiation diffracted from a slit scanned in front of a flat-field XUV spectrometer. With the spectrally resolved signal spread across one axis and the spatially resolved diffraction pattern in the other dimension, we reconstruct the wavefront. While demonstrated for high harmonics, the method is not restricted in wavelength.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.34.003026 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Integrated optical probing scheme enabled by localized-interference metasurface for chip-scale atomic magnetometer.
Nanophotonics
November 2024
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China.
Emerging miniaturized atomic sensors such as optically pumped magnetometers (OPMs) have attracted widespread interest due to their application in high-spatial-resolution biomagnetism imaging. While optical probing systems in conventional OPMs require bulk optical devices including linear polarizers and lenses for polarization conversion and wavefront shaping, which are challenging for chip-scale integration. In this study, an integrated optical probing scheme based on localized-interference metasurface for chip-scale OPM is developed.
View Article and Find Full Text PDFPurpose: To evaluate the performance of the InnovEyes Sightmap platform (Alcon Laboratories, Inc) in refractive surgery by comparing the visual acuity and higher order aberrations (HOAs) between ray-tracing-guided laser in situ keratomileusis (LASIK) and topography-guided LASIK.
Methods: This prospective study enrolled participants who underwent either ray-tracing-guided LASIK or topography-guided LASIK. Comprehensive ophthalmic evaluations were performed preoperatively, as well as at 1 day, 2 weeks, 1 month, and 3 months postoperatively.
Dual-band complex-amplitude metasurface empowered high security cryptography with ultra-massive encodable patterns.
Nanophotonics
August 2024
Shanghai Key Laboratory of Multidimensional Information Processing, Key Laboratory of Polar Materials and Devices, East China Normal University, Shanghai 200241, China.
Article Synopsis
- - The study introduces an innovative cryptographic method using a dual-band complex-amplitude meta-hologram to improve information security and capacity, overcoming limitations found in previous strategies.
- - By combining a modified visual secret-sharing scheme with a one-time-pad private key, this method allows for encoding two different patterns while enhancing the quality of decryption.
- - A prototype meta-hologram was designed and tested, showing promising results that align with the design parameters, which could be beneficial in fields like information encryption and anti-counterfeiting.
3D mapping quest: How far can we see with recent advances in 3D mapping?
J Cardiol
December 2024
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan. Electronic address:
Recent advances in three-dimensional (3D) ultra-high-density mapping systems have uncovered previously unknown mechanisms underlying various arrhythmias. This clinical review, titled "3D Mapping Quest," focuses on the recently uncovered mechanisms of four types of arrhythmias. (1) To elucidate the precise mechanisms underlying atrial fibrillation (AF), ultra-high-density mapping with adequate spatial and temporal resolution is essential.
View Article and Find Full Text PDFAdvancing wavefront sensing: meta Shack-Hartmann sensor enhances phase imaging.
Light Sci Appl
December 2024
The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, 999077, China.
Article Synopsis
- - A new wavefront sensor using a meta-lens array has been created, overcoming the size and curvature limitations of traditional micro-lenses.
- - This innovation leads to better sampling density and higher angular resolution for measuring wave phases.
- - The use of metasurfaces allows for improved characterization of complex wavefronts on a smaller scale, advancing optical phase measurement technology.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!