Hyperpolarizability and second order susceptibility

In summary, hyperpolarizability is a measure of a molecule's ability to become polarized in response to an electric field. It is related to second order susceptibility, which is a material's response to an applied electric field. These properties are affected by factors such as electronic structure, geometry, and surrounding environment, and are used in applications such as nonlinear optics and optical data storage.
  • #1
Konte
90
1
Hello everybody,

My question is about nonlinear optic in both macroscopic and microscopic point of view.

What is the relationship between second order susceptibility tensor [itex]\chi^{(2)}[/itex] and the first hyperpolarizability tensor [itex]\beta[/itex] ?

Thank you everybody.
Konte.
 
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  • #3
Thanks for your answer.

Konte
 

What is hyperpolarizability?

Hyperpolarizability is a measure of the ability of a molecule to become polarized in response to an electric field. It is a second-order tensor quantity that describes the change in the dipole moment of a molecule when subjected to an external electric field.

What is second order susceptibility?

Second order susceptibility is a physical property of a material that describes how the material responds to an applied electric field. It is a measure of the efficiency of a material to produce a second harmonic signal, which is twice the frequency of the applied electric field.

How is hyperpolarizability related to second order susceptibility?

Hyperpolarizability and second order susceptibility are closely related as they both describe the response of a material to an electric field. Hyperpolarizability is a molecular property while second order susceptibility is a bulk material property that depends on the hyperpolarizability of individual molecules.

What factors affect the hyperpolarizability and second order susceptibility of a material?

The hyperpolarizability and second order susceptibility of a material are affected by the electronic structure and geometry of the molecules in the material, as well as the strength and direction of the applied electric field. Other factors such as temperature, pressure, and surrounding media can also influence these properties.

What are some applications of hyperpolarizability and second order susceptibility?

Hyperpolarizability and second order susceptibility are important properties in the field of nonlinear optics, where materials with high values of these properties are used to manipulate and control light. They are also used in the development of new optical materials for applications such as optical switching, frequency conversion, and optical data storage.

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