Search research 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

Related Concept Videos

Interference: Path Lengths

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...

Propagation of Uncertainty from Systematic Error

Propagation of Uncertainty from Systematic Error

The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this particular...

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and refractory oxide ion...

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

Systematic Error: Methodological and Sampling Errors

Systematic Error: Methodological and Sampling Errors

In the case of systematic errors, the sources can be identified, and the errors can be subsequently minimized by addressing these sources. According to the source, systematic errors can be divided into sampling, instrumental, methodological, and personal errors.
Sampling errors originate from improper sampling methods or the wrong sample population. These errors can be minimized by refining the sampling strategy. Defective instruments or faulty calibrations are the sources of instrumental...

NMR Spectrometers: Resolution and Error Correction

NMR Spectrometers: Resolution and Error Correction

When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...

You might also read

Related Articles

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

Sort by

Same author

Reply to 'Burnout and professional quality of life in dermatologists'.

Journal of the European Academy of Dermatology and Venereology : JEADV·2024

Same author

High-dimensional states of light with full control of OAM and transverse linear momentum.

Optics letters·2020

Same author

Cutaneous involvement during COVID-19 pandemic: an emerging sign of infection.

Journal of the European Academy of Dermatology and Venereology : JEADV·2020

Same author

Second primary melanoma: incidence rate and risk factors.

Journal of the European Academy of Dermatology and Venereology : JEADV·2020

Same author

Bean (Phaseolus vulgaris L.) protoplasts as a model system to study the expression and stability of recombinant seed proteins.

Plant cell reports·2019

Same author

Secreted heat shock proteins in sunflower suspension cell cultures.

Plant cell reports·2019

Search research articles

Related Experiment Video

Updated: Jun 7, 2026

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

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

Published on: August 12, 2013

Multiphase homodyne interferometry: analysis of some error sources.

V Greco, C Iemmi, S Ledesma

|November 2, 2010

Summary

This summary is machine-generated.

Multiphase homodyne interferometry minimizes errors from laser fluctuations. Proper light beam adjustment automatically compensates for power drifts, enhancing accuracy over older methods.

More Related Videos

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Related Experiment Videos

Last Updated: Jun 7, 2026

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

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

Published on: August 12, 2013

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Area of Science:

Optics and Photonics
Metrology

Background:

Interferometry techniques are crucial for precise measurements.
Traditional two-channel interferometry is susceptible to environmental and instrumental noise.
Laser power fluctuations and drifts can introduce significant errors in measurements.

Purpose of the Study:

To review sources of error in multiphase homodyne interferometry.
To highlight the advantages of multiphase homodyne interferometry over classic approaches.
To demonstrate the self-compensation mechanism for laser power variations.

Main Methods:

Review of established error sources in interferometric techniques.
Analysis of the theoretical principles of multiphase homodyne interferometry.
Comparison of signal processing in multiphase versus two-channel interferometry.

Main Results:

Identified key error sources in multiphase homodyne interferometry.
Demonstrated that multiphase homodyne interferometry offers automatic compensation for laser power fluctuations and drifts.
Quantified the improvement in accuracy compared to the classic two-channel method.

Conclusions:

Multiphase homodyne interferometry inherently compensates for laser power instability.
Proper adjustment of light beams is critical for achieving this self-compensation.
This technique offers enhanced accuracy and reliability in interferometric measurements.