A Generating Device of Short-term Frequency Stability Standard

Abstract

The invention discloses a generation device of a short-term frequency stability criterion. The generation device comprises a laser resonant loop and a signal output loop, wherein the laser resonant loop comprises a laser, a resonant cavity and a frequency locking loop, the output end of the laser is connected with the resonant cavity, the resonant cavity is connected with the frequency locking loop, the frequency locking loop is connected with the laser to form the laser resonant loop, the laser is used for outputting laser, the frequency locking loop is used for locking laser frequency stabilization on a mode of the resonant cavity to obtain laser with a set line width, and the laser with the set line width is processed through the signal output loop to output a microwave signal. With the generation device of the short-term frequency stability criterion, disclosed by the embodiment of the invention, the noise influence of the laser can be solved; and with the adoption of a photon filter, a side mode can be substantially prevented, the stability of starting vibration is improved, the frequency stability is superior to that of a high stability crystal oscillator by more than two orders of magnitude, a triple quantity transmission relation can be met from the aspect of metering, and moreover, the frequency of the generation device is high and can be directly taken as a radio-frequency time base.

Description

technical field [0001] The invention relates to the field of frequency stability, in particular to a generating device for a short-term frequency stability standard based on an ultra-stable light source. Background technique [0002] Short-term frequency stability (that is, phase noise), as an important feature to measure the performance of precision oscillators, plays an important role in positioning, navigation, communication, military and other fields. [0003] At present, in order to measure the short-term frequency stability of signals (especially radio frequency signals or microwave signals) in practical applications, corresponding short-term frequency stability standards are often required as the radio frequency time base to measure the short-term frequency stability of the signal to be tested. [0004] In the prior art, two ways are usually used to obtain the radio frequency time base: one way is to use a high-stable crystal oscillator for frequency multiplication ou...

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Problems solved by technology

[0008] An embodiment of the present invention provides a short-term frequency stability standard generation device to solve the problem of defects in obtaining short-term frequency stability standards in the prior art

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