High-Precision Laser Interferometry: Instruments and Techniques

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (20 May 2025) | Viewed by 505

Special Issue Editors


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Guest Editor
School of Instrumentation Science and Engineering, Harbin Institute of Technology, No.92 Xidazhi Street, Nangang District, Harbin 150001, China
Interests: ultra-precision laser interferometry; laser tracking measurement; satellite formation inter-satellite ranging

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Guest Editor
School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150080, China
Interests: precise measurement; laser technology; nanotechnology; multi-dimensional measurement; laser interferometer
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Special Issue Information

Dear Colleagues,

Laser interferometers have received a lot of interest as a precise measurement instrument because of their remarkable measurement accuracy, high stability, and non-contact measurement properties. They can precisely measure physical quantities such as length, displacement, velocity, acceleration, rotation speed, and gravitational waves, even at the nanoscale scale. Laser interferometers are effective for many precision measurement jobs, whether in a laboratory for assessing minute physical changes or for monitoring product quality on industrial manufacturing lines.

To fully leverage the advantages of high-precision laser interferometers over traditional measurement tools, it is crucial to delve into and explore their performance in various measurement scenarios.

This Special Issue aims to showcase the latest research on the instruments and techniques of laser interferometers in different measurement contexts, with particular emphasis on their applications in precision measurement and fundamental physics research. We seek papers on the use of laser interferometers in various measurement scenarios, such as precision engineering measurements, fundamental physics research, and multi-dimensional measurement systems. Potential topics include (but are not limited to) the following:

  • Laser frequency stabilization technology.
  • Novel designs and optimizations of laser interferometers.
  • Applications of laser interferometers in precision engineering measurements.
  • Laser interferometer technologies in fundamental physics research.
  • Integration and synchronization of multi-dimensional measurement systems.
  • Laser interferometers in quality control on industrial production lines.
  • Laser interference signal processing technology.

Prof. Dr. Hongxing Yang
Prof. Dr. Pengcheng Hu
Guest Editors

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Keywords

  • precise measurement
  • laser technology
  • nanotechnology
  • multi-dimensional measurement
  • laser frequency stabilization
  • laser interferometer
  • laser interferometry
  • optical nonlinearity
  • linear displacement
  • absolute distance measurement
  • calibration

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Published Papers (1 paper)

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Research

10 pages, 4552 KiB  
Article
High Precision Range Extracting Method for FMCW LiDAR Using Semiconductor Laser Based on EO-PLL and NUDFT
by Tao Xue, Jingyang Liu, Cheng Lu and Guodong Liu
Photonics 2025, 12(5), 466; https://doi.org/10.3390/photonics12050466 - 10 May 2025
Viewed by 231
Abstract
Frequency tuning nonlinearities in semiconductor lasers constitute a critical factor that degrades measurement precision and spectral resolution in frequency-modulated continuous-wave (FMCW) LiDAR systems. This study systematically investigates the influence of nonlinear beat signal phase distortions on spectral peak broadening and develops a phase-fitting-based [...] Read more.
Frequency tuning nonlinearities in semiconductor lasers constitute a critical factor that degrades measurement precision and spectral resolution in frequency-modulated continuous-wave (FMCW) LiDAR systems. This study systematically investigates the influence of nonlinear beat signal phase distortions on spectral peak broadening and develops a phase-fitting-based pre-correction algorithm. To further enhance system performance, an electro-optic phase-locked loop architecture combined with non-uniform discrete Fourier transform signal processing is implemented, establishing a comprehensive solution for tuning nonlinearity suppression. Experimental validation demonstrates a sub-18 µm standard deviation in absolute distance measurements at a 19 m target range. This integrated approach represents a significant advancement in coherent frequency-sweep detection methodologies, offering considerable potential for high-precision photonic radar applications. Full article
(This article belongs to the Special Issue High-Precision Laser Interferometry: Instruments and Techniques)
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