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Atomic oscillator and frequency signal generation system
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A technology for atomic oscillators and generating systems, applied in power oscillators, instruments, automatic power control, etc., can solve problems such as difficulty in controlling the atomic state of alkali metals
Inactive Publication Date: 2019-11-05
SEIKO EPSON CORP
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When the temperature of one of the gas storage part and the metal storage part tends to affect the other, it is difficult to control the state of the alkali metal atoms stored in the atomic cell
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no. 2 Embodiment approach
[0114] 2.1. Atomic oscillators
[0115] Next, an atomic oscillator 400 according to a second embodiment will be described with reference to the drawings. Figure 9 It is a cross-sectional view schematically showing the atomic cell unit 30 of the atomic oscillator 400 of the second embodiment. In addition, in Figure 9 and later Figure 10 In , the X-axis, the Y-axis, and the Z-axis are illustrated as three mutually perpendicular axes.
[0116] Hereinafter, in the atomic oscillator 400 of the second embodiment, points different from the example of the atomic oscillator 100 of the first embodiment described above will be described, and descriptions of the same points will be omitted.
[0117] In the above-mentioned atomic oscillator 100, such as Figure 4 As shown, the light receiving element 32 is disposed between the first chamber 112 and the second chamber 114 .
[0118] In contrast, in the atomic oscillator 400, as Figure 9 As shown, the light emitting element 12 is dis...
no. 3 Embodiment approach
[0130] Next, a frequency signal generation system according to a third embodiment will be described with reference to the drawings. The following clock transmission system as a timing server is an example of a frequency signal generation system. Figure 11 is a schematic configuration diagram showing the clock transmission system 900 .
[0131] The clock transmission system of the present invention comprises the atomic oscillator of the present invention. Hereinafter, as an example, a clock transmission system 900 including the atomic oscillator 100 will be described.
[0132] The clock transmission system 900 is a system for aligning the clocks of each device in a time-division multiplexing network, and has a redundant structure of an N (Normal: normal) system and an E (Emergency: Emergency) system.
[0133] like Figure 11 As shown, the clock transmission system 900 has a clock supply device 901 and an SDH (Synchronous Digital Hierarchy: Synchronous Digital Hierarchy) dev...
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Abstract
The present invention provides an atomic oscillator and a frequency signal generation system. The temperatures of a first chamber and a second chamber of the atomic oscillator are not easily influenced by the other one. The atomic oscillator includes a light emitting element, an atomic cell that has a first chamber in which alkali metal atoms in a gas state are contained and through which a lightfrom the light emitting element passes, a second chamber in which alkali metal atoms in a liquid state are contained, and a passage connecting the first chamber and the second chamber to each other, and a light receiving element that receives the light passing through the first chamber, in which the light receiving element is disposed between the first chamber and the second chamber.
Description
technical field [0001] The present invention relates to atomic oscillators and frequency signal generating systems. Background technique [0002] An atomic oscillator that oscillates based on energy transitions of alkali metal atoms such as cesium is known as an oscillator that has high-precision oscillation characteristics over a long period of time. The atomic oscillator includes: a light source; an atomic chamber in which alkali metal atoms such as cesium are enclosed; and a light receiving element that receives light passing through the atomic chamber. [0003] For example, Patent Document 1 discloses an atomic oscillator including an atomic cell having a gas storage part containing gaseous metal atoms and a metal storage part containing liquid or solid metal atoms. Under normal circumstances, the temperature of the metal storage part is lower than the temperature of the gas storage part. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2015-53304 [0005] In...
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