HETERODYNE OPTICAL COHERENCE TOMOGRAPHY USING AN AOTF

摘要

PURPOSE: A heterodyne light coherent tomographic device using an acoustic light modulation filter is provided to secure information rapidly using a light detection element. CONSTITUTION: A broadband light source provides the rays of light. A polarization beam splitter(310) controls the rays of the light to penetrate or to be reflected depending on the state of polarization. A scanning mirror(340) scans the surface of a sample. A demodulator(376) demodulates detected Interference signals for outputting. A control part(380) detects the tomography information of the sample. [Reference numerals] (330) AOTF driver; (376) Demodulator;