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Deformation of Member under Multiple Loadings

Deformation of Member under Multiple Loadings

When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...

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Related Experiment Video

Updated: Jun 17, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Dynamic optical path distortions in laser rods.

S D Sims¹, A Stein, C Roth

¹TRG Inc., a subsidiary of Control Data Corporation, Route 110, Melville, New York 11749, USA.

|January 6, 2010

Summary

This summary is machine-generated.

Flash lamp heating causes thermal distortions in laser rods. These distortions create a diverging lens effect, impacting laser performance during the pumping pulse.

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Area of Science:

Optics
Materials Science
Laser Physics

Background:

Laser rods are critical components in various laser systems.
Thermal effects can significantly degrade laser performance and beam quality.
Understanding thermal distortions is essential for laser design and optimization.

Purpose of the Study:

To quantify thermally induced distortions in laser rods during flash lamp heating.
To investigate the temporal evolution of these distortions.
To determine the impact of distortions on the optical properties of laser rods.

Main Methods:

Utilized a Mach-Zehnder interferometer to measure distortions.
Employed a Q-switched laser as the illumination source for time-resolved interferometry.
Obtained time-resolved interferograms to capture dynamic distortion changes.

Main Results:

Significant thermally induced distortions were observed in laser rods.
These distortions were found to occur during the flash lamp pumping pulse.
The observed distortions exhibited a diverging lens effect within the sample rods.

Conclusions:

Flash lamp heating induces significant, time-varying optical distortions in laser rods.
These distortions manifest as a detrimental diverging lens effect.
The findings highlight the need to mitigate thermal distortions for improved laser stability and performance.