Temperature control box for long-term stable work of laser

Abstract

The invention discloses a temperature control box for long-term stable work of a laser, and the temperature control box comprises a sealed box body which comprises an inner-layer metal heat-conducting plate and an outer-layer metal heat-conducting plate which are not in contact with each other, wherein a heat insulation filling layer and a TEC are arranged between the inner-layer metal heat-conducting plate and the outer-layer metal heat-conducting plate, and a temperature measurement resistor is arranged on the inner-layer metal heat-conducting plate; a DFB laser installation base which is fixedly arranged on the surface of the interior of the inner-layer metal heat conduction plate, wherein a DFB laser is arranged on the DFB laser installation base, a pin of the DFB laser is connected with an internal circuit of the DFB laser installation base, and the output end of the DFB laser is connected with an optical fiber penetrating through the sealing box body; and a temperature controller which is respectively connected with the TEC, the DFB laser installation base and the temperature measuring resistor. The temperature control box for long-term stable work of the laser has the advantages that temperature compensation during operation of the laser is achieved, long-term stable work of the laser is guaranteed, and the influence of the external environment on the laser is reduced.

Description

technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to a temperature control box for long-term stable operation of lasers. Background technique [0002] With the continuous development of laser technology, lasers have been more and more widely used in industry, scientific research and other fields, especially in the field of measurement, lasers are used more and more frequently. In the field of gas measurement, the semiconductor laser absorption spectroscopy technology is more common. This is a technology that uses the wavelength of the laser emitted by the laser to scan the wavelength of the injected current to detect the gas. By scanning the wavelength of the laser, the light source is scanned. A certain band in the band produces an absorption effect through the specific absorption line of the gas to be measured, and the concentration of the gas to be measured is reversed through detection. [0003] Semiconductor laser ...

AI Technical Summary

Problems solved by technology

However, the external ambient temperature will still have a great impact on the performance of the laser, especially in harsh industrial applications, where large fluctuations in the ambient temperature will cause the laser to fail to work stably in a good state and emit laser light. The wavelength and power of the laser will also fluctuate, which will greatly affect the measurement accuracy. Therefore, ensuring the stability of the laser's operating temperature is an important means to improve its performance.

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