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Digitale Medien

An acoustooptic method of measuring the noise equivalent power of optical heterodyne systems (1975)

Eklund, H. ; Eng, S. T. ; Daniels, E.

Springer

Optical and quantum electronics 7 (1975), S. 361-369

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Details

ISSN: 1572-817X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik

Notizen: Abstract The noise equivalent power of optical heterodyne detection at 10.6 μm has been measured with a method based on Raman-Nath diffraction of a CO2 laser beam. One of the frequency shifted first order diffracted beams is used as the signal radiation. The local oscillator radiation is obtained by splitting off a part of the laser beam incident upon the device used for the acoustooptic diffraction. The signal power can be varied over a large dynamic range by changing the acoustic input power. A study of the probable errors shows that the total error in the NEP measurement is less than 30%.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00619834

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