Vortex simultaneous phase-shifting digital holographic microscopy

Yi-meng Xue; Bing-cai Liu; Yong-qiang Pan; Ai-ling Tian; Yue-yang Ma

doi:10.1117/12.3045921

13 December 2024 Vortex simultaneous phase-shifting digital holographic microscopy

Yi-meng Xue, Bing-cai Liu, Yong-qiang Pan, Ai-ling Tian, Yue-yang Ma

Proceedings Volume 13501, AOPC 2024: Computational Imaging Technology; 1350104 (2024) https://doi.org/10.1117/12.3045921
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

The vortex phase-shifting digital holography method, which utilizes a spiral phase plate for phase modulation, can precisely achieve vortex phase modulation while avoiding the cumbersome control and calibration processes of phase shifter. However, this method still requires mechanical rotation of the spiral phase plate to introduce the phase shift. To improve the quality of holographic reconstruction and achieve real-time online imaging, a vortex simultaneous phase-shifting digital holographic microscopy measurement method has been proposed. This method uses a two-dimensional phase grating to split the object beam to generate four diffracted waves of the object being measured. The reference beam is modulated by a spiral phase plate to generate vortex reference light with a spiral phase distribution, which is then divided into four regions. When the four diffracted waves of the object beam match and interfere with the four regions of the vortex reference light, different interference regions will produce different phase-shifted holograms, thereby achieving the collection of simultaneous random phase-shift holograms. Extract four sub-phase-shifted holograms from a single digital hologram, combine them with the vortex phase structure, and calculate the pixel phase shifts in the sub-holograms. Utilize the least squares generalized phase-shifting algorithm for phase reconstruction at each pixel of the hologram, ultimately achieving high-precision measurement of the surface topography of the object being tested. This method avoids the positioning errors and singularity of vortex caused by multiple movements of the phase shifter. It improves the robustness of the imaging device and provides new possibilities for measurements in dynamic scenes.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yi-meng Xue, Bing-cai Liu, Yong-qiang Pan, Ai-ling Tian, and Yue-yang Ma "Vortex simultaneous phase-shifting digital holographic microscopy", Proc. SPIE 13501, AOPC 2024: Computational Imaging Technology, 1350104 (13 December 2024); https://doi.org/10.1117/12.3045921

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Phase shifts

Digital holography

Holograms

Spiral phase plates

Microscopy

Phase shifting

Phase distribution

Keywords/Phrases

Search In:

Publication Years