JPH05218862A - Rubidium atom oscillator - Google Patents

Abstract

PURPOSE:To miniaturize the entire scale of oscillator and to facilitate the adjustment by providing plural dielectric plates on the opening part side of a cavity part housing a rubidium gas cell. CONSTITUTION:At an optical microwave resonance part, plural dielectric plates 2, rubidium gas cell 3, dielectric 4 and photodetector 5 are packed in a cylindrical cavity 1 successively from the opening part. By changing the number of the dielectric plates 2, the resonance frequency of the cavity 1 is changed. Namely, the adjustment of the resonance frequency decided at the dielectric plates 2, rubidium gas cell 3, dielectric 4, photodetector 5 and cavity 1, namely, the tuning of the cavity 1 is enabled by adjusting the number of the dielectric plates 2. Thus, microwaves inputted from a microwave introduction part 6 can be resonanted. Further, since the dielectric plates 2 and the dielectric 4 are put in the cavity 1, the cavity 1 can be miniaturized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an atomic oscillator, and more particularly to a rubidium atomic oscillator using an optical pumping method.

[0002]

2. Description of the Related Art In a rubidium atomic oscillator, a cavity is required to utilize atomic resonance. This cavity length was determined by the wavelength of the introduced microwave and the shape error of the rubidium gas cell inserted in the cavity.

[0003]

In the above-mentioned prior art, the oscillator itself is relatively large because the cavity length depends on the shape error of the rubidium gas cell.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rubidium atomic oscillator in which the inconveniences of the conventional example are improved, and in particular, the size and adjustment of the entire oscillator can be facilitated.

[0005]

According to the present invention, in a rubidium atomic oscillator including an optical microwave resonance part including a rubidium gas cell part and a cavity part accommodating the rubidium gas cell, a plurality of parts are provided on the opening side of the cavity part. The dielectric plate is used. This aims to achieve the above-mentioned object.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a cavity portion according to an embodiment of the present invention. A plurality of dielectric plates 2, a rubidium gas cell 3, a dielectric 4, and a light receiving element 5 are sequentially filled in the cylindrical cavity 1 when viewed from its opening. By changing the number of the dielectric plates 2, the resonance frequency of the cavity 2 changes. Therefore, by adjusting the number of the dielectric plates 2, the dielectric plate 2, the rubidium gas cell 3, the dielectric 4, and the light receiving element 5 can be adjusted. The resonance frequency determined in the cavity 1 can be adjusted, that is, the cavity can be tuned.

For this reason, it becomes possible to resonate with the microwave inputted from the microwave introducing section 6, and by inserting the dielectric plate 2 and the dielectric 4 into the cavity 1, the cavity can be miniaturized. You can do it.

[0008]

As described above, according to the present invention,
It is possible to provide an unprecedented excellent rubidium atomic oscillator in which the cavity can be downsized by inserting a dielectric into the cavity and the resonance frequency can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Cavity 2 Plural Dielectric Plates 3 Rubidium Gas Cell 4 Dielectric 5 Optical Receiver 6 Microwave Introducing Section

Claims (1)

[Claims] 1. A rubidium atomic oscillator including an optical microwave resonance part including a rubidium gas cell part and a cavity part accommodating the rubidium gas cell, wherein a plurality of dielectric plates are provided on the opening side of the cavity part. And rubidium atomic oscillator.