| 摘要 |
<p>The system produces a reference light beam, which is frequency-shifted, modulated, time-shifted or phase-shifted compared to the optical signal to be determined. At least one wave-dependent facility (14) is provided, with which the optical beam to be determined and the reference light beams are aligned in such a manner, that they can be applied for interference. At least one detector (40) is arranged together with a demodulator (50) or other optical elements, so that a temporal or spatial modulation of the intensity related to the whole or part of the detected radiation cross-section can be measured.</p> |
