Integrally-designed CPT (Coherent Population Trapping) atomic frequency scale physical system

Abstract

The invention discloses an integrally-designed CPT (Coherent Population Trapping) atomic frequency scale physical system which comprises an assembly laser tube (1), an optical assembly, an absorption cell (7), a hot ring (5) and a C-field coil (8), an optoelectroulc module and a heating thermostat, wherein a laser tube sleeve (2) is rotatably assembled in an assembling hole of the hot ring (5), the laser tube (1) and the optical assembly behind the laser tube are fixed in a step assembling hole of the hot ring (5) through the laser tube sleeve (2), the C-field coil (8) directly wound on the absorption cell (7) and the absorption cell (7) are assembled on a metal absorption cell sleeve (9) with a magnetic permeability of more than 2000, and the absorption cell sleeve (9) is coaxially coupled and connected to the back of the optical assembly through the assembling hole of the non-magnetic conductor hot ring (5). Through the integrated design, the laser tube and the absorption cell are subjected to temperature control simultaneously, thus the defect of the design that the laser tube and the absorption cell are divided into two parts and respectively subjected to the temperature control in the prior art is eliminated, the volume of the physical system and the power consumption of the physical system are reduced.

Description

technical field [0001] The invention relates to a passive coherent layout trapped atomic frequency standard (CPT atomic frequency standard for short), more specifically, the invention relates to the physical system of the CPT atomic frequency standard. Background of the invention [0002] CPT atomic frequency standard CPT is currently the only new atomic frequency standard that can be miniaturized in theory. Its size, power consumption and start-up speed have greater advantages than the widely used rubidium clocks at present, so it has greater application prospects. A large number of electronic devices require the atomic frequency standard as a frequency source for self-time keeping, but due to the power consumption and large size of the atomic frequency standard, it can only be replaced by a crystal oscillator (crystal oscillator). However, the crystal oscillator has the disadvantage of large drift rate, and the long-term error of the provided time reference is large, which...

AI Technical Summary

Problems solved by technology

The advantage of this structure is that the light source part and the absorbing bubble part can be controlled at different temperature points according to needs, but the disadvantage is that the volume of the physical system is increased, and the two independent temperature controls increase the area and power consumption of the circuit board.

Kernco's physical system is currently undocumented

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