Jove
Visualize
Contact Us
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 Videos

Quasi-common-path laser feedback interferometry based on frequency shifting and multiplexing.

Xinjun Wan1, Duo Li, Shulian Zhang

  • 1State Key Laboratory of Precision Measurements, Department of Precision Instruments, Tsinghua University, Beijing, China. wanxj02@mails.tsinghua.edu.cn

Optics Letters
|March 16, 2007
PubMed
Summary
This summary is machine-generated.

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

Engineered Norovirus-Derived Nanoparticles as a Plug-and-Play Cancer Vaccine Platform.

ACS nano·2023
Same author

A Medical Image Segmentation Method Based on Improved UNet 3+ Network.

Diagnostics (Basel, Switzerland)·2023
Same author

Role of crescents for lupus nephritis in clinical, pathological and prognosis: a single-center retrospective cohort study.

European journal of medical research·2023
Same author

Stage II Pancreatic Adenocarcinoma after Endovascular Repair of Abdominal Aortic Aneurysm: A Case Report and Literature Review.

Journal of clinical medicine·2023
Same author

Local changes in snow depth dominate the evolving pattern of elevation-dependent warming on the Tibetan Plateau.

Science bulletin·2023
Same author

Dendrobium officinale polysaccharide prevents neuronal apoptosis via TET2-dependent DNA demethylation in high-fat diet-induced diabetic mice.

International journal of biological macromolecules·2023
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

This study introduces a novel laser feedback interferometer for precise displacement measurement. The system achieves sub-2 nm resolution and 8 nm accuracy, enabling sensitive detection of target movements.

Area of Science:

  • Optics and Photonics
  • Metrology
  • Interferometry

Background:

  • Laser interferometry is crucial for precise measurements.
  • Common-path interferometers offer enhanced stability.
  • Feedback interferometers can improve sensitivity.

Purpose of the Study:

  • To develop a quasi-common-path laser feedback interferometer.
  • To enhance measurement resolution and accuracy.
  • To utilize frequency shifting and multiplexing for displacement sensing.

Main Methods:

  • Employing two acousto-optic modulators for frequency shifting.
  • Generating frequency-shifted feedback light using a mirror.
  • Simultaneous phase variation measurement via heterodyne demodulation.

Related Experiment Videos

  • Subtracting phase variations for accurate displacement calculation.

    • Main Results:

    • Achieved a short-period displacement resolution better than 2 nm.
    • Demonstrated a 3-minute displacement accuracy of 8 nm.
    • Operated effectively under typical room conditions.

    Conclusions:

    • The quasi-common-path laser feedback interferometer provides high-precision displacement measurements.
    • Frequency shifting and multiplexing are effective techniques for enhancing interferometer performance.
    • The developed system is suitable for sensitive target displacement detection.