Jove
Visualize
Contact Us

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

Dragging four-point method along a circular path for high-precision measurement.

Applied optics·2026
Same author

Data-stitching algorithm based on elasticity.

Applied optics·2022
Same author

Point-diffraction interferometer wavefront sensor with birefringent crystal.

Applied optics·2020
Same author

Real-time point-diffraction interferometer and its analytical formulation.

Applied optics·2015
Same author

Measurement of complex amplitude with a point-diffraction interferometer.

Applied optics·2015
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: May 20, 2026

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

Interferometric testing for off-axis aspherical mirrors with computer-generated holograms.

Masaru Kino1, Mikio Kurita

  • 1Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. kino@z.phys.nagoya-u.ac.jp

Applied Optics
|July 10, 2012
PubMed
Summary

This study enhances computer-generated hologram (CGH) interferometers for measuring off-axis aspherical mirrors. The improved method achieves high lateral resolution, crucial for large telescope mirror fabrication.

More Related Videos

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Related Experiment Videos

Last Updated: May 20, 2026

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Area of Science:

  • Optical engineering
  • Interferometry
  • Holography

Background:

  • Conventional computer-generated hologram (CGH) interferometers struggle with lateral resolution for off-axis aspherical mirrors due to diffraction blur and distortion.
  • Nonzero order diffraction from CGHs limits interferogram quality in existing setups.

Purpose of the Study:

  • To improve the lateral resolution of interferograms generated by CGH interferometers.
  • To adapt CGH applications within interferometers for enhanced measurement capabilities.

Main Methods:

  • Modified the application of CGHs in interferometers so the returned test beam utilizes zeroth-order diffraction.
  • Applied the developed CGH interferometer to measure the primary mirror of the Okayama Astrophysical Observatory 3.8 m telescope project.

Main Results:

  • Achieved a high-resolution interferogram with 2.8 mm lateral resolution for a 1.2 m off-axis aspherical mirror.
  • Successfully demonstrated a high lateral resolution interferometer through improved CGH usage.

Conclusions:

  • The modified CGH interferometer design significantly enhances lateral resolution for off-axis aspherical mirror measurements.
  • This advancement is critical for the precise fabrication of large astronomical optics, such as telescope primary mirrors.