Search research articles

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A Comprehensive Review on Light-Driven Detoxification of Emerging Pollutants by Scalable Photocatalytic Systems.

Langmuir : the ACS journal of surfaces and colloids·2026

Same author

Expanding the phenotypic spectrum of FGF12-epilepsy-does prompt precision therapy affect outcomes?

NPJ genomic medicine·2026

Same author

Image quality metric parameter for holographic modal wavefront sensing.

Optics letters·2026

Same author

Elicited Repetitive Daily Blindness Associated With Gain-of-Function <i>SCN1A</i> Variants and Responsiveness to Sodium Channel Blockers.

Neurology. Genetics·2026

Same author

Intrinsic and extrinsic orbital angular momentum of a self-healed optical vortex.

Optics letters·2026

Same author

Management and Prognosis of Patients with Mild Traumatic Brain Injury: A Narrative Review.

Brain sciences·2026

Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026

Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026

Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026

Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026

Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026

Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026

See all related articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: Jan 12, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Zonal wavefront sensing using a grating array without a reference wavefront.

Biswajit Pathak, Jaspal Singh, C S Narayanamurthy

|November 4, 2025

Summary

This summary is machine-generated.

This study introduces a novel reference-free wavefront sensing technique using grating diffraction. It simplifies optical systems by eliminating the need for reference spots, making wavefront measurement practical in challenging environments.

More Related Videos

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Related Experiment Videos

Last Updated: Jan 12, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Area of Science:

Optics and Photonics
Optical Metrology
Wavefront Sensing

Background:

Traditional wavefront sensors, such as Shack-Hartmann and interferometric systems, necessitate a high-quality reference source.
The requirement for reference spots can be impractical or impossible to achieve in certain applications, limiting wavefront measurement capabilities.
Existing methods often involve complex calibration procedures or dedicated reference optical components.

Purpose of the Study:

To propose and validate a reference-free wavefront sensing scheme.
To eliminate the need for independent reference spots in grating array-based wavefront sensors.
To simplify wavefront measurement in systems where reference acquisition is challenging.

Main Methods:

A grating array-based sensor employing local grating-induced diffraction is proposed.
Phase gradients are encoded directly into the +1 and -1 diffraction orders.
A single camera frame is used to record the diffraction spots, capturing encoded phase information.

Main Results:

The proposed scheme successfully encodes phase gradients without requiring external reference spots.
Proof-of-concept simulations demonstrated the feasibility of the technique.
Experimental results confirmed the effectiveness and practicality of the reference-free sensing approach.

Conclusions:

The developed reference-free wavefront sensing scheme effectively overcomes the limitations of traditional methods.
This technique simplifies optical system design and calibration by removing the need for reference spots.
The proposed method offers a robust solution for wavefront measurement in previously inaccessible scenarios.