Video Experimental Relacionado
Updated: May 6, 2026

11:08
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
19.5K
Generación de supercontinuidad inducida por filamento en el cristal no lineal no centrosimétrico no lineal
Optics express
|February 20, 2026
Resumen
Los investigadores generaron luz visible supercontinua (SC) en un cristal KTA utilizando pulsos láser de femtosegundo. Este proceso óptico no lineal controlado muestra potencial para aplicaciones ópticas avanzadas.
Área de la Ciencia:
- La óptica no lineal es la óptica no lineal.
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- La generación de supercontinuidad es crucial para varias aplicaciones ópticas.
- Los cristales no lineales ofrecen propiedades únicas para la manipulación de la luz.
Objetivo del estudio:
- Investigar experimentalmente la generación de supercontinuum inducida por filamento en cristales KTA.
- Para explorar el control de procesos ópticos no lineales utilizando láseres femtosegundos.
Principales métodos:
- Utilizó cientos de pulsos láser de femtosegundos a 1030 nm para impulsar la generación de SC.
- Empleó un cristal no lineal KTA no centrosimétrico.
- Se realizó un análisis de polarización del supercontinuo generado.
Principales resultados:
- Se logró un supercontinuo visible que abarca entre 400 y 900 nm con pulsos láser s-polarizados.
- Se observaron perfiles espectrales y espaciales distintos para los componentes de SC con polarización s y p.
- Se demostró la generación de SC cuando la potencia máxima del láser excedió 5 veces la potencia crítica.
Conclusiones:
- Los procesos no lineales inducidos por el filamento en los cristales KTA pueden ser controlados.
- Esta investigación apoya el uso de cristales KTA en aplicaciones ópticas no lineales en cascada.
Videos de Conceptos Relacionados
Generation of Straight or Branched Actin Filaments
2.9K
The straight or branched structure formation of actin filaments is controlled by nucleating proteins such as the formins and Arp2/3 complex. Formin-mediated assembly results in straight filaments, whereas Arp2/3 protein complex-mediated assembly results in branched actin filaments.
Arp2/3 Complex
Arp2/3 complex is a seven-subunit complex consisting of two proteins similar to actin- Arp2 and Arp3, and five other subunits that help keep Arp2 and Arp3 inactive. When required, the complex is...
Arp2/3 Complex
Arp2/3 complex is a seven-subunit complex consisting of two proteins similar to actin- Arp2 and Arp3, and five other subunits that help keep Arp2 and Arp3 inactive. When required, the complex is...
2.9K
Electric Field Inside a Conductor
6.4K
When a conductor is placed in an external electric field, the free charges in the conductor redistribute and very quickly reach electrostatic equilibrium. The resulting charge distribution and its electric field have many interesting properties, which can be investigated with the help of Gauss's law.
Suppose a piece of metal is placed near a positive charge. The free electrons in the metal are attracted to the external positive charge and migrate freely toward that region. This region then...
Suppose a piece of metal is placed near a positive charge. The free electrons in the metal are attracted to the external positive charge and migrate freely toward that region. This region then...
6.4K
Electric Field at the Surface of a Conductor
4.6K
Consider a conductor in electrostatic equilibrium. The net electric field inside a conductor vanishes, and extra charges on the conductor reside on its outer surface, regardless of where they originate.
In the 19th century, Michael Faraday conducted the famous ice pail experiment to prove that the charges always reside on the surface of a conductor. The experimental set-up consists of a conducting uncharged container mounted on an insulating stand. The outer surface of the container is...
In the 19th century, Michael Faraday conducted the famous ice pail experiment to prove that the charges always reside on the surface of a conductor. The experimental set-up consists of a conducting uncharged container mounted on an insulating stand. The outer surface of the container is...
4.6K
Induced Electric Fields
3.9K
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
3.9K
Induced Electric Fields: Applications
2.7K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
2.7K
Imperfections in Crystal Structure: Point, Line and Plane Defects
153
A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
153

