Arrangement of mirrors forming a cavity resonator for light waves
An optical cavity, resonating cavity or optical resonator is an arrangement of mirrors or other optical elements that forms a cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser light. They are also used in optical parametric oscillators and some interferometers. Light confined in the cavity reflects multiple times, producing modes with certain resonance frequencies. Modes can be decomposed into longitudinal modes that differ only in frequency and transverse modes that have different intensity patterns across the cross section of the beam. Many types of optical cavity produce standing wave modes.
A glass nanoparticle is suspended in an optical cavity
Different resonator types are distinguished by the focal lengths of the two mirrors and the distance between them. Flat mirrors are not often used because of the difficulty of aligning them to the needed precision. The geometry (resonator type) must be chosen so that the beam remains stable, i.e. the size of the beam does not continually grow with multiple reflections. Resonator types are also designed to meet other criteria such as minimum beam waist or having no focal point (and therefore intense light at that point) inside the cavity.
Optical cavities are designed to have a large Q factor;[1] a beam will reflect a very large number of times with little attenuation. Therefore, the frequency line width of the beam is very small indeed compared to the frequency of the laser.
^Paschotta, Rüdiger. "Q Factor". Encyclopedia of Laser Physics and Technology. RP Photonics.
An opticalcavity, resonating cavity or optical resonator is an arrangement of mirrors or other optical elements that forms a cavity resonator for light...
laser without an opticalcavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and...
with this property is called an optical amplifier. When an optical amplifier is placed inside a resonant opticalcavity, one obtains a laser. For lasing...
and reduced spatial hole-burning. Vertical-cavity surface-emitting lasers (VCSELs) have the opticalcavity axis along the direction of current flow rather...
factor to determine a laser's emission frequencies is the opticalcavity (or resonant cavity) of the laser. In the simplest case, this consists of two...
amplified in a cavity resonator that is usually composed of two or more mirrors. Thus an opticalcavity, also known as a resonator, is a cavity with walls...
Microwave cavity or RF cavity, a cavity resonator in the radio frequency range, for example used in particle accelerators Opticalcavity, the cavity resonator...
are those based on: electromagnetically induced transparency in an opticalcavity or microresonator, where the transmission is controlled by a weaker...
amplification process. It is essentially the same as an optical parametric oscillator, but without the opticalcavity (i.e., the light beams pass through the apparatus...
pressure interaction between light (photons) and matter using optical resonators (cavities). It first became relevant in the context of gravitational wave...
devices such as compact disc players. See laser diode. The optical resonator, or opticalcavity, in its simplest form is two parallel mirrors placed around...
momentum. An opticalcavity allows greater re-use of photons, but keeping the beam in the cavity becomes much more challenging. An opticalcavity can be made...
to be selectively received Creation of coherent light by optical resonance in a laser cavity Orbital resonance as exemplified by some moons of the Solar...
high-finesse opticalcavity: theory and application to overtone transitions of C2H2 and C2HD", Journal of the Optical Society of America B-Optical Physics...
is typically used to prevent unwanted feedback into an optical oscillator, such as a laser cavity. The operation of [some of] the devices depends on the...
principally concerned with quantum electronics, laser construction, opticalcavity design, the physics of producing a population inversion in laser media...
the stability of the opticalcavity. The output coupler may be either flat or curved, depending on the design of the opticalcavity. The radii of curvature...
(which is not equivalent), photons confined to two or more coupled opticalcavities also reproduce the physics of interacting atomic energy levels, and...
a micro-scale. It is often used in connection with electron microscopy. Cavity ring-down spectroscopy Circular dichroism spectroscopy Coherent anti-Stokes...
inversion. The rod is often placed between two mirrors, forming an opticalcavity, which oscillate the light produced by the ruby's fluorescence, causing...
spherical opticalcavity have been studied by several research groups. For a shiny object, such as a metallic micro-sphere, stable optical levitation...
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