Relay type femtosecond pulse high-precision displacement detection device

Abstract

A relay type femtosecond pulse high-precision displacement detection device belongs to the gravitational wave detection field, and comprises a measurement terminal, a No.1 femtosecond phase lock relay, a No.2 femtosecond phase lock relay and a No.3 femtosecond phase lock relay. The relay type femtosecond pulse high-precision displacement detection device of the present invention adopts a pulse time domain lock type relay measurement structure, amplifies the light power of the measured light by the cascade of the three femtosecond phase lock relays, and transforms the system light echo power from a biquadrate attenuation function of a measured distance into a square attenuation function, realizes the ultra long distance dynamic displacement detection of an outer solar system scale, and realizes the displacement detection of the sub-nanometer sensitivity by the light delay line scanning. The measurement terminal and the three femtosecond phase lock relays are relatively independent, so that the real-time communication and high-precision clock synchronization problem among the far apart satellites is avoided.

Description

technical field [0001] The invention belongs to the field of gravitational wave detection, and mainly relates to an ultra-long-distance high-precision femtosecond laser pulse displacement detection device in the outer solar system. Background technique [0002] For many years, the detection of gravitational waves has been a research hotspot all over the world. The detection of gravitational waves is a direct verification of the predictions of general relativity and a direct test of its core ideas. The origin and evolution of the universe is of great significance. The detection of gravitational waves directly contributed to the birth of gravitational wave astronomy, making it possible to observe the universe with gravitational waves instead of traditional electromagnetic wave means, which can provide us with a large amount of information that could not be obtained in the past, and provide a new way for people to further deepen their understanding of the universe. way. [00...

AI Technical Summary

Problems solved by technology

[0010] The present invention proposes and designs a relay-type femtosecond device for the problems of low precision of the above-mentioned device, further improvement of measurement range, inability to measure dynamic targets, and difficulty in realizing real-time communication and high-precision clock synchronization between distant measurement terminals. Pulse high-precision displacement detection device

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