Carbon dioxide laser wavelength measuring apparatus

Abstract

The invention discloses a carbon dioxide laser wavelength measuring apparatus which comprises: an optical system, an electronic system and a scanning system. Carbon dioxide laser beams pass through an entrance slit, are reflected into parallel beams by a first collimation sphere reflector and a focusing sphere reflector and then are beamed on a plane diffraction grating whose rotation is controlled by a stepping motor through a sine mechanism so that diffraction beams whose wavelength forms a sine relationship with a plane diffraction grating rotation angle can be obtained. The diffraction beams arrive a tellurium cadmium mercury detector via an objective lens, a second collimation sphere reflector and an exit slit. An emergent light signal which passes through the exit slit is converted into an electrical signal through the tellurium cadmium mercury detector. Through amplification, an A/D conversion, the carbon dioxide laser wavelength can be measured through processing. By using the apparatus, the disadvantages in the current carbon dioxide laser wavelength measuring apparatus can be overcome. Functions are powerful. Cost performance is high. Measuring precision is high. A measuring speed is fast. Operation is easy. The apparatus has many other characteristics. A volume is small. The apparatus is convenient to be integrated into the system to perform the on-line monitoring.

Description

technical field [0001] The invention relates to a laser wavelength measuring device, in particular to a carbon dioxide laser wavelength measuring device [0002] device. Background technique [0003] As carbon dioxide lasers are more and more widely used in many fields such as industrial processing, communication, measurement, and medical scientific research, it is becoming an urgent need to measure the wavelength of carbon dioxide lasers conveniently and quickly. The main working substance of carbon dioxide laser is CO 2 , N 2 Composed of three gases and He. where C0 2 is the gas producing laser radiation, N 2 And He is the auxiliary gas. The laser transition occurs at C0 2 Between the two vibrational-rotational energy levels of the molecular electronic ground state. When the carbon dioxide laser is working, due to the N 2 Molecules have a high probability of being collided with electrons, so they are effectively excited to the first excited state, whose energy is...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing carbon dioxide laser wavelength measurement device and provide a carbon dioxide laser wavelength measurement device with powerful functions, high cost performance, high measurement accuracy, fast measurement speed and simple operation.

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