Although the quantum cascade gain medium can be used to produce incoherent light in a superluminescent configuration, it is most commonly used in combination with an optical cavity to form a laser.

Fred can handle both incoherent and coherent light using Gaussian beam propagation.

The effect is a form of electroluminescence where incoherent and narrow-spectrum light is emitted from the p-n junction in a solid state material.

Swartzlander said the next step would be to test lightfoils in air and experiment with a variety of materials with different refractive properties, and with incoherent light.

When coherent light from the laser strikes a pit the material glows, giving off incoherent light of a different wavelength.

If the concept is restricted to geometric optics-i.e. to incoherent light and to objects larger than the wavelength of light-then the fundamental carrier of light is a ray.

The researchers have theoretically calculated that incoherent light as e.g. sunlight, is almost as efficient as laserlight, to be converted by the photomagnetic effect.

Some of these atoms decay via spontaneous emission, releasing incoherent light as photons of frequency, ν.

In the case of ordinary incoherent light, the standing waves are distinct only within a microscopically thin volume of space next to the reflecting surface.

Students are fascinated by the laser, whose "coherent light" (as opposed to the "incoherent light" of white light) makes holography possible, Ms. Cowles said.