Deep space gravitational wave detection method based on relay type femtosecond pulse

Abstract

A deep space gravitational wave detection method based on relay type femtosecond pulse belongs to the gravitational wave detection field. The method is characterized in that the equal arm length differential detection of a gravitational wave signal is realized by scanning the optical delay lines, and the detection sensitivity can reach the sub-nanometer magnitude; two measuring arms both adopt the pulse time domain locking type relay measurement structures, the light power of the measurement light is amplified by the cascade of three femtosecond phase lock relays, and the system light echo power is transformed from a biquadrate attenuation function of distance into a square attenuation function, thereby realizing the deep space gravitational wave detection of an outer solar system scale; the measurement terminals and the six femtosecond phase lock relays are independent relatively, thereby avoiding the real-time communication and high-precision clock synchronization problems among the far apart satellites.

Description

technical field [0001] The invention belongs to the field of gravitational wave detection, and mainly relates to a femtosecond laser-based deep-space gravitational wave detection method. 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. [0003] Long-distance precision displacement dete...

AI Technical Summary

Problems solved by technology

However, in the ultra-long-distance measurement, this method is not enough to meet the range measurement requirements of the deep space gravitational wave detection mission, and with the increase of the measured distance, the measurement error increases linearly, which cannot meet the space gravitational wave detection mission. Accuracy requirements

In addition, in the ultra-long-distance measurement, due to the long round-trip time of the measurement light, the dynamic characteristics of the measurement system are greatly affected, so that this method can only measure static targets and cannot realize displacement detection.

[0009] To sum up, there is currently a lack of a femtosecond laser-based deep-space gravitational wave detection method in the field of gravitational wave detection

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