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A method and system for adjusting laser output wavelength

An adjustment method and laser technology, which are applied to devices for controlling laser output parameters, lasers, and laser components, can solve problems such as the influence of laser output wavelengths, and achieve intuitive drift, clear control processes, and simple program design.

Active Publication Date: 2019-08-23
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and system for adjusting the output wavelength of a laser, to solve the influence of the external environment or circuit temperature drift on the output wavelength of the laser, and to improve the accuracy and precision of the adjustment of the output wavelength of the laser

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  • A method and system for adjusting laser output wavelength
  • A method and system for adjusting laser output wavelength
  • A method and system for adjusting laser output wavelength

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0053] figure 1 It is a schematic flow chart of the method for adjusting the output wavelength of the laser of the present invention. Such as figure 1 As shown, the adjustment method includes:

[0054] Step 100...

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Abstract

The invention discloses a method and a system for adjusting the output wavelength of a laser. The adjusting method comprises the following steps of: acquiring the voltage monitoring value of the photodiode inside the laser; acquiring a voltage value of the first digital potentiometer inside the current driving unit; Generating first feedback information according to the voltage monitoring value ofthe photodiode and the voltage value of the first digital potentiometer; acquiring a voltage monitoring value of a thermistor inside the laser; acquiring a voltage value of the second digital potentiometer inside the temperature driving unit; Generating second feedback information according to the voltage monitoring value of the thermistor and the voltage value of the second digital potentiometer; Determining the wavelength shift type of the laser. The output wavelength of the laser is adjusted according to the wavelength shift type of the laser. The adjustment method and system of the invention can solve the influence of external environment or circuit temperature drift on the output wavelength of the laser, improve the adjustment accuracy of the laser wavelength, and further improve thelong-term stability and accuracy of the monitoring system.

Description

technical field [0001] The invention relates to the field of laser spectrum detection, in particular to a method and system for adjusting the output wavelength of a laser. Background technique [0002] During the long-term gas concentration detection process of the laser absorption spectroscopy detection system, due to the external use environment and the drift of circuit components, the output wavelength of the laser will drift, and the drifted signal will have a great impact on the inversion of the gas concentration. Errors affect the measurement accuracy and long-term stability of the system. For example, due to the change of ambient temperature, the thermoelectric cooling (TEC) module inside the laser is affected, resulting in insufficient temperature control of the laser, and at the same time affecting the stability of the output signal of the laser modulation circuit board, which eventually causes the output wavelength of the laser to drift. [0003] The judgment of l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/06H01S5/062
Inventor 张志荣董凤忠孙鹏帅夏滑李哲崔小娟庞涛吴边
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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