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

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

You might also read

Related Articles

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

Sort by

Same author

[Evaluation of per-endoscopic cytology in the identification of Campylobacter pylori on gastric mucosa].

Gastroenterologie clinique et biologique·1987

Same author

Star wars: a new nuclear system?

Medicine and war·1987

Same author

A back-of-the-envelope risk assessment of Star Wars.

Medicine and war·1986

Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026

Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026

Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026

Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026

Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026

Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 12, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Interferometric laser power meter.

|June 18, 2010

Summary

This summary is machine-generated.

A novel laser power meter uses an absorbing film on a glass plate. Interferometry monitors changes in thickness and refractive index as the laser heats the plate, enabling simple power measurement.

More Related Videos

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Published on: June 23, 2023

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Published on: May 15, 2017

Related Experiment Videos

Last Updated: Jun 12, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems

Published on: June 23, 2023

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Published on: May 15, 2017

Area of Science:

Optics and Photonics
Laser Technology
Interferometry

Background:

Accurate laser power measurement is crucial for various scientific and industrial applications.
Traditional power meters can be complex or expensive.
Developing simple, cost-effective laser power measurement techniques is an ongoing need.

Purpose of the Study:

To present a simple interferometric method for measuring laser power.
To demonstrate the feasibility of using thermal expansion and refractive index changes for power sensing.

Main Methods:

Construction of a laser power meter using a glass plate coated with an absorbing film.
Utilizing interferometric techniques to monitor changes in the glass plate.
Correlating interferometric signals with laser beam heating effects.

Main Results:

The absorbing film efficiently heats the glass plate upon laser incidence.
Increased temperature causes measurable changes in the glass plate's thickness and refractive index.
These thermal-optic effects are detectable via interferometry.

Conclusions:

A straightforward and potentially low-cost interferometric laser power meter can be realized.
The method leverages fundamental thermal-optic properties of materials.
This technique offers a simple approach to laser power monitoring.