Laser feedback interferometer
A technology of laser feedback and interferometer, which is applied in the direction of instruments, scientific instruments, and measurement optics, can solve problems such as the inability to realize multi-coordinate, multi-degree-of-freedom measurement, and achieve the effect of improving accuracy and stability
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[0014] The laser feedback interferometer provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0015] See figure 1 , The first embodiment of the present invention provides a laser feedback interferometer 100, which includes: a microchip laser 1, a beam splitter 2, a first frequency shifter 3, a second frequency shifter 4, and a converging lens 5. At least two photodetectors 6, an electrical signal processing system 7, and a data acquisition and processing system 8. The beam splitter 2 receives the laser light generated by the microchip laser 1 and divides it into two light outputs, one of which passes through the first frequency shifter 3, the second frequency shifter 4 and the converging lens in sequence 5. The other path is received by the at least two photodetectors 6, the at least two photodetectors 6, the electrical signal processing system 7, and the data acquisition and processing system 8 are ...
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