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Updated: Jul 2, 2026
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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
Technique for measuring the beam shape of pulsed lasers
C R Prasad1, A Yoganarasimha, S P Venkateshan
1Department of Mechanical Engineering, Indian Institute of Science, Bangalore-560012, India.
The Review of Scientific Instruments
|September 1, 1979
Summary
This study introduces a straightforward method to measure pulsed laser beam shape parameters using a single laser pulse. The technique employs angled beam dividers to reflect laser light for analysis, simplifying laser diagnostics.
Area of Science:
- Optics and Photonics
- Laser Physics
- Experimental Techniques
Background:
- Accurate measurement of laser beam parameters is crucial for various applications.
- Traditional methods for pulsed laser beam analysis can be complex or require multiple pulses.
- Characterizing beam shape is essential for understanding laser performance and optimizing systems.
Purpose of the Study:
- To present a simple, single-pulse technique for measuring pulsed laser beam shape parameters.
- To offer an accessible method for laser diagnostics and characterization.
- To facilitate the determination of key beam parameters with minimal experimental setup.
Main Methods:
- Utilizes multiple beam dividers set at small angles to the laser beam axis.
- Reflects portions of the laser beam back towards the source.
- Employs a screen or phosphor and a camera to capture reflected images for analysis.
Main Results:
- Successfully demonstrated a technique for obtaining beam shape parameters from a single laser pulse.
- The method provides a straightforward way to visualize and quantify beam characteristics.
- Images captured allow for direct measurement of beam dimensions and profiles.
Conclusions:
- The described technique offers a simple and effective approach to pulsed laser beam parameter measurement.
- This method reduces the complexity and resource requirements for laser diagnostics.
- It provides a valuable tool for researchers and engineers working with pulsed laser systems.
