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

Joule-Thomson Effect

Joule-Thomson Effect

The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases.
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...

Thermal Strain

Thermal Strain

Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...

Focusing of Light in the Eye

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

Thermal expansion and Thermal stress: Problem Solving

Thermal expansion and Thermal stress: Problem Solving

San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.

You might also read

Related Articles

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

Sort by

Same author

Role of Static Displacements in Stabilizing Body Centered Cubic High Entropy Alloys.

Physical review letters·2021

Same author

Curie-Weiss behavior of liquid structure and ideal glass state.

Scientific reports·2019

Same author

Predictive multiphase evolution in Al-containing high-entropy alloys.

Nature communications·2018

Same author

Reprint of "Methylmercury production in and export from agricultural wetlands in California, USA: the need to account for physical transport processes into and out of the root zone".

The Science of the total environment·2014

Same author

Methylmercury production in and export from agricultural wetlands in California, USA: the need to account for physical transport processes into and out of the root zone.

The Science of the total environment·2013

Same author

DNA damage emergency: cellular garbage disposal to the rescue?

Oncogene·2013

Search research articles

Related Experiment Video

Updated: Jun 15, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

Equivalent thin lens model for thermal blooming compensation.

J A Fleck, J R Morris

|March 6, 2010

Summary

This summary is machine-generated.

Researchers developed two methods to correct thermal blooming in laser beams. These techniques calculate a corrective phase, improving beam propagation through heated atmospheres for clearer targeting.

More Related Videos

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

Related Experiment Videos

Last Updated: Jun 15, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

Area of Science:

Optics and Photonics
Laser Physics
Atmospheric Optics

Background:

Thermal blooming poses a significant challenge for high-energy laser beam propagation.
Accurate phase correction is crucial for maintaining beam quality and focus on target.
Existing methods for thermal blooming compensation can be complex or limited in scope.

Purpose of the Study:

To derive and present two novel methods for calculating corrective phase to mitigate thermal blooming.
To evaluate the effectiveness and practicality of these new phase correction techniques.
To offer simpler and more versatile alternatives to current thermal blooming compensation strategies.

Main Methods:

Expressing the nonlinear wage equation solution in operator form.
Method 1: Glint return propagation (forward to target, backward through atmosphere).
Method 2: Thin atmospheric lens approximation at the aperture.

Main Results:

Both methods successfully derive a conjugate phase correction for thermal blooming.
Method 2, using the thin lens approximation, demonstrates comparable performance to predictive schemes.
Method 2 offers significant advantages in simplicity and versatility.

Conclusions:

Two operator-based methods provide effective phase correction for thermal blooming.
The thin atmospheric lens method is a highly practical and versatile approach.
These methods enhance laser beam control in turbulent, heated atmospheric conditions.