| 摘要 |
The tracker has a distance measurement unit designed as an interferometer (10) for determination of distance alteration to an object by interferometry. An interferometer laser beam source creates measuring radiation for the interferometer. The interferometer laser beam source is formed as a laser diode (20). The laser diode is formed such that measuring radiation is produced longitudinally in a defined emission wavelength and coherence length of 10m in a single-mode. The coherence length is assigned by the interferometer. The laser beam source is a superluminescent LED, a distributed feedback laser, a distributed Bragg reflector laser, a fiber Bragg grating laser, an external cavity diode laser, a diode pumped solid state laser, a discrete mode laser and a microchip laser. An independent claim is also included for a method for determination of distance alteration to an object. |
