| 摘要 |
<p>PURPOSE: An optical coherence tomography using an active mode-locking laser is provided to eliminate a variable filter having a mechanical limitation because the scrambled signal in which a central frequency is changed is directly input. CONSTITUTION: An optical coherence tomography(1) using an active mode-locking laser comprises a light source(10), a beam splitter(20), a reference unit(30), a diagnosis part(40), an optical coupling unit(50), and a signal processing unit(60). The light source unit emits lights in which a central frequency is periodically changed by the scrambled signal transmitted from outside of a cavity chamber through the cavity chamber. The beam splitter splits lights having a single path emitted from the light source unit into first lights and second lights having different paths. The reference unit is arranged in the path where the first lights split by the beam splitter progresses, thereby reflecting the first lights. The diagnosis unit mounting a sample is arranged in the path where the second lights split by the beam splitter progresses. The optical coupling unit couples the first and second lights in which interferences are occurred by being progressed to different paths through the reference and diagnosis units. The signal processing unit detects and portrays data of the lights transmitted from the optical coupling unit.</p> |
