System and method for enhancing cold rubidium atom two-photon transition resonance based on optical frequency comb

Abstract

The invention discloses a system and method for enhancing cold rubidium atom two-photon transition resonance based on an optical frequency comb. According to the system and method, a digital control module, a reference source, a mixer, a photodetector, a polarization optical splitter, a slide, a piezoelectric ceramic, a pumping source, an avalanche photodetector, a spread spectrum optical fiber, and a frequency-multiplication crystal structure form a closed loop, namely, an optical frequency comb; the physical output of the optical frequency comb includes the output of the polarization opticalsplitter and the output of the digital control module; and based on the optical frequency comb, cold rubidium atom two-photon transition is completed by means of a capture and cooling alternating method, and the spectrum of the cold rubidium atom two-photon transition is drawn. The system of the invention has the advantages of simple structure, low cost and excellent performance. With the systemand method of the invention, problems such as large environmental noise and large phase noises of an amplifier in the prior art can be solved, the cold rubidium atom two-photon transition resonance can be enhanced, and optical communication frequency standards can be determined.

Description

technical field [0001] The invention relates to two-photon transition, optical communication and optical frequency comb technology, in particular to a system and method for enhancing two-photon transition resonance of cold rubidium atoms based on optical frequency comb (optical frequency comb) in optical communication. Background technique [0002] Optical frequency combs (optical frequency combs), which provide a variety of stable coherent light sources, are considered ideal for setting frequency standards and have been applied to fiber-based optical communications. Optical frequency combs match the wavelengths required for fiber-based optical communications. The optical frequency comb generates ultra-short optical pulses in the time domain, and multiple coherent lights in the frequency domain. The long-distance optical fiber transmission technology is currently a relatively advanced optical fiber transmission technology at home and abroad, which can effectively avoid inter...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a system and method for enhancing the two-photon transition resonance of cold rubidium atoms based on an optical frequency comb, which can be used to enhance the two-photon transition resonance of cold rubidium atoms, and can be used to formulate optical communication Frequency standard, with simple structure, low cost and excellent performance, can solve the problems of environmental noise and amplifier phase noise in the prior art, enhance the two-photon transition resonance of cold rubidium atoms, and determine the frequency standard of optical communication, etc.

Images