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Wide-frequency light absorption method utilizing microwave-assisted Rydberg atoms

A microwave-assisted, light absorption technology, applied in the field of broadband light absorption, can solve the problems of high cost, harsh use environment, troublesome operation, etc., and achieve the effect of low cost and simple and convenient operation.

Inactive Publication Date: 2018-12-14
SHANDONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

At present, Rydberg atoms are involved in many experiments that people are interested in in the fields of atomic molecules, optical physics, etc., but the existing broadband absorbing devices require a harsh environment, high cost, and troublesome operation

Method used

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  • Wide-frequency light absorption method utilizing microwave-assisted Rydberg atoms
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  • Wide-frequency light absorption method utilizing microwave-assisted Rydberg atoms

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 Shown is the connection diagram of the experimental device for realizing the present invention, a broadband light absorption method using microwave-assisted Rydberg atoms, using a four-level system of rubidium atoms, and its atomic transition path is 5S 1 / 2 →5P 3 / 2 →53D 5 / 2 →54P 3 / 2 ,Such as figure 2 As shown, the specific steps are:

[0023] The 780nm laser provided by the first external cavity semiconductor laser enters the rubidium vapor cell as the probe light, and couples the probe light to the ground state transition 5S of the rubidium atom 1 / 2 →5P 3 / 2 ;

[0024] The 480nm laser light provided by the second external cavity semiconductor laser is opposite to the probe light, and enters the rubidium vapor cell reversely;

[0025] Tuning the coupled light to lock on the Rydberg transition 5P of the rubidium atom 3 / 2 ...

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Abstract

The invention discloses a wide-frequency light absorption method utilizing microwave-assisted Rydberg atoms. The method comprises the specific steps of providing a beam of laser as detection light, entering a rubidium vapor pool, and coupling the detection light to rubidium atom ground state transition; in addition, providing a beam of coupled light opposite to the detection light, and reversely entering the rubidium vapor pool; adjusting the coupled light to be locked in rubidium atom Rydberg state transition for resonance coupling; forming an electromagnetic induction transparent window by the rubidium atom ground state transition and Rydberg state transition, wherein a transmission peak occurs; coupling microwave signals to the rubidium atom Rydberg state transition; splitting the transmission peak, wherein a transmission spectrum of the detection light has a bandwidth-adjustable wide-frequency absorption characteristic; and receiving a detection light signal by using a photoelectric detector, thereby obtaining an absorption spectrum line of the detection light. The method disclosed by the invention works under the conditions of room temperature and normal atmospheric pressure,and is relatively low in cost, simple and convenient to operate and suitable for large-scale production and use.

Description

technical field [0001] The invention relates to a broadband light absorption method, in particular to a broadband light absorption method using microwaves to assist Rydberg atoms. Background technique [0002] Broadband absorbing devices have important applications in photodetection, photovoltaic power generation, and optical stealth. Atomic systems have the advantages of strong coherence, obvious interference effects, high threshold, and easy preparation, and are widely used in the design of coherent devices. A Rydberg atom is an atom in which an electron is excited to an orbit with a higher principal quantum number, that is, an atom in a highly excited state. Rydberg atoms are very sensitive to electric fields, because the polarizability of Rydberg atoms with principal quantum number n is proportional to n 7 , the electric field strength threshold of field ionization is proportional to n -4 , the electric dipole moment is proportional to n 2 , has the characteristics o...

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/3103
Inventor 彭延东赵树材周文鹏杨艾红李晨汪金陵
Owner SHANDONG UNIV OF SCI & TECH
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