| 词汇 | example_english_coherence-length |
| 释义 | coherence lengthcollocation in Englishmeanings of coherenceand lengthThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with coherence. coherence noun[U] uk /kəʊˈhɪə.rəns/ us /koʊˈhɪr.əns/ the situation when the parts of something fit together in a natural or ... See more at coherence length noun uk /leŋθ/ us /leŋθ/ the measurement of something from end to end or along its ... See more at length Examples of coherence lengthThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. From the transmission geometry of a small-angle experiment it is obvious that the transverse coherencelength is the key factor that determines speckle. Therefore, we only consider the harmonics emitted within a single time-dependent coherencelength. At the longer wavelength, no adaptive optics are necessary, because the transverse coherencelength parameter r0 is 360 cm, the same size as the mirror. These unique properties provide good beam quality, high pointing stability, and large coherence length (a single longitudinal mode) of the output laser radiation. Note that the transverse coherencelength does not depend on the wavelength spread but only on the geometry (source size and distance source object). Any light that is outside the short coherencelength will not interfere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In order for interference to occur, the path length difference must be smaller than the coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The length over which the phase in a beam of light is correlated, is called the coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Partially coherent sources are sources where the coherence time or coherencelength are limited by bandwidth, by thermal noise, or by other effect. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In conventional interferometry with long coherencelength (laser interferometry), interference of light occurs over a distance of meters. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Wave interference is strong when the paths taken by all of the interfering waves differ by less than the coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The most important parameters of the light source are its wavelength and coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The coherencelength defines the width of the correlogram, which again depends on the spectral width of the light source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Coherencelength is important in holography and telecommunications engineering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It does not pay to use a nonlinear crystal much longer than the coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The extent of the fringes depends on the coherencelength of the source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A wave with a longer coherencelength is closer to a perfect sinusoidal wave. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A good holography laser will typically have a coherencelength of several meters, ample for a deep hologram. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Non-zero visibility is present only for short intervals of pulses repeated after cavity length distances up to this long coherencelength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of coherence Go to the definition of length See other collocations with coherence |
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