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  2. Optical ring resonators - Wikipedia

    en.wikipedia.org/wiki/Optical_ring_resonators

    Optical mirror (reflector) made of a double ring system coupled to a single waveguide. Forward propagating waves in the waveguide (green) excite anti-clockwise traveling waves in both rings (green). Due to the inter-resonator coupling, these waves generate clockwise rotating waves (red) in both rings which in turn excite backward propagating ...

  3. Optical cavity - Wikipedia

    en.wikipedia.org/wiki/Optical_cavity

    An optical cavity, resonating cavity or optical resonator is an arrangement of mirrors or other optical elements that confines light waves similarly to how a cavity resonator confines microwaves. Optical cavities are a major component of lasers , surrounding the gain medium and providing feedback of the laser light.

  4. Resonator - Wikipedia

    en.wikipedia.org/wiki/Resonator

    A physical system can have as many resonant frequencies as it has degrees of freedom; each degree of freedom can vibrate as a harmonic oscillator.Systems with one degree of freedom, such as a mass on a spring, pendulums, balance wheels, and LC tuned circuits have one resonant frequency.

  5. Optical microcavity - Wikipedia

    en.wikipedia.org/wiki/Optical_microcavity

    An optical microcavity or microresonator is a structure formed by reflecting faces on the two sides of a spacer layer or optical medium, or by wrapping a waveguide in a circular fashion to form a ring. The former type is a standing wave cavity, and the latter is a traveling wave cavity.

  6. Ring laser gyroscope - Wikipedia

    en.wikipedia.org/wiki/Ring_laser_gyroscope

    A ring laser gyroscope (RLG) consists of a ring laser having two independent counter-propagating resonant modes over the same path; the difference in phase is used to detect rotation. It operates on the principle of the Sagnac effect which shifts the nulls of the internal standing wave pattern in response to angular rotation.

  7. Nanophotonic resonator - Wikipedia

    en.wikipedia.org/wiki/Nanophotonic_resonator

    A nanophotonic resonator or nanocavity is an optical cavity which is on the order of tens to hundreds of nanometers in size. Optical cavities are a major component of all lasers, they are responsible for providing amplification of a light source via positive feedback, a process known as amplified spontaneous emission or ASE.

  8. New planet ring system discovered in our Solar System

    www.aol.com/planet-ring-system-discovered-solar...

    It is around a newly discovered dwarf planet, named Quaoar.

  9. Semiconductor ring laser - Wikipedia

    en.wikipedia.org/wiki/Semiconductor_ring_laser

    and a device for resynchronizing optical signals to eliminate timing "jitter". [1] A European research project formed in 2006 to study potential applications of SRLs. It is known as IOLOS, (Integrated optical logic and memory using ultra-fast micro-ring bistable semiconductor laser), and will receive funding of €1.25 million over three years.