Active optical clock generation method and device with separation of gain medium and quantum reference medium

Abstract

The invention relates to a method and device for producing an active light clock with a gain medium and a quantum reference medium separated. The device comprises an optical resonant cavity, the quantum reference medium and the population-inversion gain medium, wherein the quantum reference medium and the population-inversion gain medium are located inside the optical resonant cavity and separated from each other in space, and the quantum reference medium is located in a magnetic field. A laser light field produces the Faraday magneto-optical rotation effect on an atomic clock transition spectral line of the quantum reference medium in the outer magnetic field, under the back feeding effect of the optical Fabry-Perot resonant cavity and under the condition that a collimating lens conducts collimation on light beams, the gain medium products stimulated radiation and reaches a laser oscillation threshold, and laser light of the active light clock is formed and output from the output end of the optical resonant cavity. According to the method and the device, the two mediums which are completely independent and separated in space are used for meeting the requirements that the output power of the active light clock is high and the narrow line of the active light clock is wide, and the output laser light has very good frequency stability and accuracy.

Description

technical field [0001] The invention belongs to the technical field of laser frequency standard and precision laser spectrum, relates to active optical clock technology, in particular to an active optical clock device in which a gain medium is separated from a quantum reference medium and a method for generating an active optical clock by using the device, which can output milliseconds The absolute laser frequency standard with watt-level power and line width much narrower than the natural line width of the quantum reference atomic spectrum is used as an atomic clock in the optical frequency band, referred to as an optical clock. Background technique [0002] The laser frequency standard, the optical clock combined with the laser frequency comb is the frequency standard with the highest precision among all precision measurement methods at present. Using the high stability and high accuracy of optical clocks, optical clocks can be used in basic scientific research to measure ...

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Problems solved by technology

In this way, two contradictory requirements are put forward for the same medium, which is difficult to be balanced on the same medium, which makes the final performance of the current active optical clock also in contradiction: if the active optical clock output with narrow linewidth is to be obtained , its power is very small, as small as picowatts or even femtowatts, which brings great difficulties to practical applications; The superior performance that should have

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