Photonics Dictionary Definitions, Abbreviations, Illustrations, Terms listing by the letter Z (Items 1 thru 31)

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Photonics Dictionary Return to Dictionary home There are 31 terms that begin with 'Z' Currently displaying records 1 thru 31. You are in set 1 of 1 1 Z-axis modulation The intensity regulation of a cathode-ray tube by... 2 Zeeman broadening Broadening of a spectrum that results from the influence of... 3 Zeeman effect The splitting of energy levels of an atom, ion or molecule... 4 Zener diode A type of semiconductor diode used in voltage-limiting... 5 zenith telescope A telescope that is fixed or has a limited degree of... 6 zepto (z) In the SI system, prefix meaning... 7 Zernike's phase contrast method The introduction of a filter into an imaging system to... 8 zero halogen thermoplastic A highly flame-retardant material used to jacket fiber... 9 zero order In an interference pattern, that point where there is no... 10 zero phase shift mirror A mirror that supplies equal reflectance for both the... 11 zero-dispersion wavelength In a single-mode optical fiber, the wavelength that causes... 12 Zerodur Schott Glass Technologies' trade name for a glass-ceramic... 13 zero-order filtering The removal of the zero-order component of the Fourier... 14 zero-order reflection grating A grating that specularly reflects the specified long... 15 zero-order retarder A quarter- or half-wave retarder made from two plates of... 16 zero-order transmission grating A polyethylene grating that transmits the long wavelengths... 17 zeta particle The difference in electrokinetic potential between the... 18 zetta (Z) In the SI system, prefix meaning... 19 zinc sulfide A polycrystalline material that transmits in the infrared;... 20 zip-cord A two-fiber optical cable containing two single-fiber... 21 zirconium arc A small bulb containing a conducting gas, an arc being... 22 zirconium fluoride An infrared transmitting material used in the production of... 23 zodiacal light The sunlight that extends to the earth after scattering... 24 zonal aberration Spherical or chromatic aberration in a lens having a wide... 25 zonal constant A factor that, when multiplied by the average candlepower... 26 zone axis Also known as zonal axis. The axis positioned through the... 27 zone plate A plate of glass, usually a photograph, on which there is a... 28 zones 1. In a polished surface, concentric waves that appear as... 29 zoom To control, by magnifying or reducing, the size of a... 30 zoom lens An optical system of variable focal length, the focal plane... 31 Z-scan A technique for determining the nonlinear optical... Currently displaying records 1 thru 31. You are in set 1 of 1 Return to Dictionary home Click to view listings of terms Term of the moment... saturation - 1. The decrease of the absorption (or gain) coefficient of a medium near some transition frequency when the power of the incident radiation near that frequency exceeds a certain value. As long as the absorption (or gain) coefficient is constant, the power absorbed (or emitted) by the medium is proportional to the incident power. However, there is always a limit to the rate at which the medium can absorb (or emit) power that is determined by the lifetimes of the energy levels involved. As this limit is reached, the induced transitions become rapid enough to affect the energy level populations, making them more nearly equal. 2. With respect to color, attribute of a visual sensation that permits a judgment to be made of the proportion of pure chromatic (in contrast to achromatic) color in the total sensation. The psychosensorial correlate, or nearly so, of colorimetric purity. See also chroma; Munsell chroma.	advertisement advertisement advertisement advertisement advertisement advertisement advertisement

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