Chip Active Optical Clock Based on Miniaturized Atomic Gas Chamber and Its Realization Method

Abstract

The invention discloses a chip active optical clock based on a miniature atom air chamber and an implementation method thereof. The chip active optical clock comprises a pump laser, a first half-waveplate, a second half-wave plate, a first polarization splitting prism, a second polarization splitting prism, a third polarization splitting prism, a laser phase modulator, the miniature atom air chamber, a photoelectric detection module, an integrated circuit control system and a pump laser driving power supply. The miniature atom air chamber is used as a four-energy-level active optical clock optical resonant cavity and an active optical clock quantum reference system at the same time, the size of the active optical clock system is reduced to a great extent, and the limitation of instabilityfactors caused by a discrete structure of the system on the clock laser performance is effectively reduced so that a high-performance chip active optical clock is realized.

Description

technical field [0001] The invention belongs to the technical field of optical frequency atomic clocks and optical quantum frequency standards, and in particular relates to an active optical clock with a chip-level size by using the end wall of a miniature atomic gas chamber directly as an active optical clock optical resonant cavity and a realization method thereof. Background technique [0002] Optical frequency atomic clocks (hereinafter referred to as optical clocks) are currently scientific devices capable of generating the most accurate and stable frequency signals, and the best optical clock stability and uncertainty indicators have entered 10 -18 order of magnitude. With its outstanding performance, optical clocks can be applied in basic scientific research such as precision physical measurement, detection of gravitational wave dark matter and other fields that cannot be realized by traditional technical means, and can even be used to discover and recognize new physi...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of implementation, it was found that in the prior art, the active optical clock optical resonant cavity and the clock quantum reference atom gas chamber are independent of each other, and the separate system structure not only increases the system size, but also makes the high-performance optical clock The application outside the laboratory faces challenges, and the discrete system structure increases the instability of the system, which affects the performance of the final output clock laser, such as the thermal expansion of the atomic gas cell wall caused by high temperature when heating the clock quantum reference atomic gas cell The amount is different from the thermal expansion of the optical cavity, which will make the performance of the clock laser affected by many factors

Images