Non-magnetic heating temperature control system

A temperature control system and temperature controller technology, applied in the direction of temperature control, control/regulation system, non-electric variable control, etc. Noise interference, good temperature stability, and the effect of avoiding magnetic field interference

Inactive Publication Date: 2014-02-12
HARBIN ENG UNIV
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Problems solved by technology

Alternating current heating will introduce magnetic noise, intermittent electric heating has poor temperature stability and will produce temperature gradients, thermal airflow heating speed is slow, airflow fluctuatio

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  • Non-magnetic heating temperature control system

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[0018] The present invention will be further described below in conjunction with the drawings.

[0019] A non-magnetic heating temperature control system includes a laser 1, a 1×4 optical splitter 3, an atomic heating chamber 6 and a temperature controller 8. Laser 1 is a semiconductor laser with a wavelength of 850nm, a maximum optical power of 3W, and a pigtail 2 output, with a maximum output optical power of 2W. The main beam laser from laser 1 enters 1×4 optical splitter 3 through pigtail 2. The splitting ratio of 1×4 optical splitter 3 is 25:25:25:25, that is, four beams in pigtail 4 The beam laser light power is equal. The pigtail 4 passes through the insulation layer 5 and the atomic heating chamber 6, and is fixed at the middle position of the side wall of the atomic heating chamber 6. The four pigtails are adjacent to each other at 90° and surround the atomic gas chamber 10 for heating, ensuring the minimum temperature gradient in the effective working area . The atom...

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Abstract

The invention relates to a non-magnetic heating temperature control system, in particular to the non-magnetic heating temperature control system which is used for an atom magnetometer system and utilizes laser to heat an atomic air chamber. The non-magnetic heating temperature control system comprises a laser, a 1*4 optical divider, an atom heating chamber and a temperature controller, and is characterized in that the laser and the 1*4 optical divider are connected through a tail fiber, the 1*4 optical divider and the atom heating chamber are connected through a tail fiber, and the temperature controller and the laser are connected through a single-core shielding signal line. An enough span exists between the electrical part, which can generate a disturbing magnetic field of the laser and the temperature controller and the atom heating chamber, and therefore the situation that a working area of the atomic air chamber generates magnetic field interference is avoided. A laser heating mode is adopted, the influence of introducing magnetic noise is avoided in the same way, the heating speed is high, a three-wire non-magnetic platinum resistor is used as the temperature sensor, the accuracy of measuring the temperature is guaranteed, and meanwhile the interference of the magnetic noise is avoided.

Description

technical field [0001] The invention relates to a non-magnetic heating temperature control system, in particular to a non-magnetic heating temperature control system used in an atomic magnetometer system to heat an atomic gas chamber with a laser. Background technique [0002] The temperature control system of the atomic gas chamber is an important part of the atomic magnetometer. In the atomic magnetometer system, the atomic gas chamber usually needs to be heated. The main purpose of heating is to increase the atomic number density and thus improve the sensitivity of the atomic magnetometer system. [0003] At present, several main heating methods are: electric heating (including AC electric heating and intermittent electric heating), hot air heating and light heating. Alternating current heating will introduce magnetic noise, intermittent electric heating has poor temperature stability and will produce temperature gradients, thermal airflow heating speed is slow, airflow f...

Claims

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Application Information

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IPC IPC(8): G05D23/24
Inventor 黄宗军黄强吴国龙孙伟民张军海
Owner HARBIN ENG UNIV
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