| 摘要 |
An interferometer for nulling a broad range of wavelengths is provided. The interferometer includes a beamsplitter, a first mirror and a second mirror. Incoming radiation is split by the beamsplitter into a first sub-signal and a second sub-signal, which are reflected by the first mirror and the second mirror, respectively, back to the beamsplitter, where they are combined to form an output signal. The interferometer further includes a first plate disposed between the beamsplitter and the first mirror and a second plate disposed between the beamsplitter and the second mirror. The first plate and the second plate have the same refractive index and thickness. The first plate is disposed perpendicular to the direction of the first sub-signal, and the second plate is disposed at an angle theta to the direction of the second sub-signal. The beam dispersion caused by the tilt of the second plate attenuates the amplitude of a broad range of wavelengths in the output signal. |
