Tests of an omnipresent standard for absolute spectral radiance measurements

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Tests of an omnipresent standard for absolute spectral radiance measurements

Correlated pairs of photons can be used to access what is effectively an omnipresent absolute standard of spectral radiance. The process of spontaneous parametric downconversion, in which pump photons are converted into pairs of photons, can be thought of as being stimulated by an omnipresent and omnidirectional one photon per mode vacuum background. This background has units of spectral radian...

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ژورنال

عنوان ژورنال: Analytica Chimica Acta

سال: 1999

ISSN: 0003-2670

DOI: 10.1016/s0003-2670(98)00685-0