JPH0572115B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas cell type rubidium atomic oscillator using an optical pumping method.

[Prior Art] A rubidium atomic oscillator of this type has an atomic resonance section equipped with a rubidium lamp. Due to its characteristics, the temperature of the rubidium lamp in the atomic resonance region is approximately
The temperature is controlled to 100℃. Furthermore, high-frequency power is supplied to the rubidium lamp to keep the rubidium lamp lit. however,
Rubidium lamps are difficult to light just by supplying high-frequency power to them. Therefore, the atomic resonance section is equipped with trigger generation means for lighting the rubidium lamp. This trigger generating means has a high voltage spark generating electrode.

Conventionally, a bracket for holding the rubidium lamp in a state in which the rubidium lamp is inserted has been used as one electrode (earth electrode) of this high-pressure spark generating electrode. Further, the electrodes of the high-pressure spark generating electrodes are made of metal vapor-deposited on the glass of the rubidium lamp using conductive paint or the like.

[Problem to be solved by the invention] Conventional rubidium atomic oscillators require metal to be vapor-deposited or conductive paint applied to the glass of the rubidium lamp in order to form electrodes for generating high-voltage sparks. Therefore, the disadvantages are that the materials are expensive and the manufacturing process of the electrodes is complicated.

Furthermore, when a rubidium lamp is kept on for a long period of time, the rubidium metal in the rubidium lamp diffuses and adheres to the inner wall of the rubidium lamp, causing the amount of light from the rubidium lamp to fluctuate. For this reason, there is a drawback that the performance as a rubidium atomic oscillator is degraded.

The first problem to be solved by the present invention is to provide a high-pressure spark generating electrode that is simple in structure and inexpensive.

The second problem to be solved by the present invention is to suppress the performance deterioration of the rubidium atomic oscillator.

[Means for Solving the Problems] A rubidium atomic oscillator to which the present invention is applied,
The apparatus includes a rubidium lamp, a high-pressure spark generating electrode that applies a trigger for lighting the rubidium lamp, and means for supplying high-frequency power to the rubidium lamp to maintain lighting of the rubidium lamp.

In order to solve the first problem, according to the present invention, one of the high-pressure spark generation electrodes is a bracket for holding the rubidium lamp in a state in which the rubidium lamp is inserted, and the high-pressure spark generation electrode The other end of the conductive wire covered with an insulating film is fixed to the bracket,
A rubidium atomic oscillator, which is a conductor exposed from the tip of the tip, is obtained.

In order to solve the second problem, according to the present invention, a rubidium atomic oscillator is obtained in which a rubidium lamp consists of a lit part and a non-lit part, and a conductive wire is wound around the non-lit part.

[Function] One of the electrodes can be used as a high-pressure spark generating electrode.
A bracket is used to hold the rubidium lamp when it is inserted. Then, the tip of the conductive wire covered with the insulating film was fixed to the bracket, and the conductor exposed from the tip of the tip was used as the other high-voltage spark generation electrode. Therefore, it is possible to obtain a high-pressure spark generating electrode that has a simple configuration and is inexpensive.

Furthermore, the rubidium lamp consists of a lit part and a non-lit part, and a conducting wire was wrapped around the non-lit part. Therefore, this wound conductive wire acts as a radiator and can keep the non-lit parts at a lower temperature than the lit parts.

[Examples] Examples of the present invention will be described below with reference to the drawings.

Referring to FIGS. 1 and 2, the atomic resonance part of the rubidium atomic oscillator according to the invention comprises a rubidium lamp 2 housed in a lamp house 1. The rubidium lamp 2 is housed in a lamp house 1. The rubidium lamp 2 is fixed to a metal bracket 3. The bracket 3 is fixed to the lamp house 1 with a screw as shown. That is, the bracket 3 holds the rubidium lamp 2 with the rubidium lamp 2 inserted therein. Further, the tip end of the conductive wire 4 covered with an insulating film is also fixed to the bracket 3. As shown in the figure, the tip of the leading end of the conducting wire 4 is exposed and the conductor 5 protrudes. This fixation is performed using adhesive or by crimping. The bracket 3 and the conductor 5 constitute a high-voltage spark generating electrode, with the bracket 3 serving as one electrode (earth electrode) and the conductor 5 serving as the other electrode. That is,
Spark can be generated between the high-voltage spark generating electrodes by applying a high voltage from a high voltage generator (not shown) provided externally between the high-voltage spark generating electrodes. The generation of this spark can provide a trigger for lighting the rubidium lamp 2.

The rubidium lamp 2 has a lighting part 2a on the right side in FIG.
It is separated from the non-lighting part 2b on the left side of the figure. As shown in the figure, an excitation coil 6 is wound around the lighting portion 2a. High frequency power is supplied to the excitation coil 6 from a lamp exciter 7 provided outside the lamp house 1 . That is, by supplying this high frequency power after applying the above trigger,
As the rubidium lamp 2, stable light emission can be obtained. That is, the combination of the excitation coil 6 and the lamp exciter 7 functions as a means for keeping the rubidium lamp 2 lit.

Further, as shown in the figure, a conducting wire 4 is wound around the non-lit portion 2b. Therefore, the wound conductive wire 4 functions as a radiator for cooling the non-lighted portion 2b. To be more specific, when the heat from the lamp house 1 is transferred to the rubidium lamp 2 via the bracket 3, the non-lighting part 2b is radiated by the wrapped conductor 4, so that the heat is radiated from the non-lighting part 2b than the lighting part 2a. It can also maintain a low temperature.

[Effects of the Invention] As explained above, according to the present invention, the rubidium lamp and the tip of the conductor covered with the insulating film are fixed to one bracket, and the tip is exposed so that the conductor protrudes. , the bracket and this conductor constituted a high-voltage spark generation electrode, so
It is possible to provide a high-voltage spark generating electrode that has a simple configuration and is inexpensive. In addition, since the conductor wire is wrapped around the unlit part of the rubidium lamp, it is possible to maintain the optimum temperature when the rubidium lamp is turned on, making it possible to extend the life of the rubidium lamp.
This has the advantage that a high-performance rubidium atomic oscillator can be provided.

[Brief explanation of the drawing]

FIG. 1 shows the structure of the atomic resonance part of a rubidium atomic oscillator according to an embodiment of the present invention.
FIG. 2 is a sectional view taken from - in FIG. 1. 1... Lamp house, 2... Rubidium lamp, 2a... Lighted part, 2b... Non-lighted part, 3
... Bracket, 4 ... Conductor covered with insulating film, 5 ... Conductor, 6 ... Excitation coil, 7 ... Lamp exciter.

Claims (1)

[Claims] 1. A rubidium lamp, a high-pressure spark generating electrode that applies a trigger for lighting the rubidium lamp, and means for supplying high-frequency power to the rubidium lamp to maintain lighting of the rubidium lamp. In the rubidium atomic oscillator, one of the electrodes is a bracket for holding the rubidium lamp in a state in which the rubidium lamp is inserted, and the other electrode is a bracket for holding the rubidium lamp in a state where the rubidium lamp is inserted.
A rubidium atomic oscillator in which a tip of a conductive wire covered with an insulating film is fixed to the bracket, and the conductor is a conductor exposed from the tip of the tip. 2. The rubidium atomic oscillator according to claim 1, wherein the rubidium lamp consists of a lit portion and a non-lit portion, and the conductive wire is wound around the non-lit portion.