Dual-probe pulse solid laser having automatic power stabilization function

Abstract

The invention discloses a dual-probe pulse solid laser having an automatic power stabilization function. The dual-probe pulse solid laser comprises a laser probe end part, a beam combiner, a focusing lens, a control system and a cooling device, wherein a first laser probe, a second laser probe, two 45-degree light splitters, an optical fiber and a laser power meter are arranged in the laser probe end part, power is separately supplied to the first laser probe and the second laser probe, the two 45-degree light splitters are symmetrically arranged, the optical fiber is provided with an optical coupler, the beam combiner is arranged at a light emergent end comprising the laser probe end part and comprises two 45-degree reflecting mirrors and a rotation lens, the 45-degree reflecting mirrors are symmetrically arranged, the rotation lens is driven by a stepping motor, and the control system is in circuit connection with the laser power meter, a first laser probe power supply, a second laser probe power supply, the cooling device and the stepping motor. By the dual-probe pulse solid laser, the service lifetime of a laser system is prolonged, the device reliability is improved, stable light emergency of a laser is achieved, the acquisition of stable spectral measurement data is ensured, and the on-line detection reliability and stability of a laser-induced breakdown spectroscopy can be effectively improved.

Description

technical field [0001] The present invention relates to the technical field of laser diagnosis and measurement, and more specifically relates to a laser system capable of long-term operation used by laser-induced breakdown spectroscopy (LIBS) to realize on-line detection of solid material components. Background technique [0002] Laser-Induced Breakdown Spectroscopy (LIBS for short) is a potential on-line measurement technology for industrial processes that has been gradually developed in recent years, and has been tried to be applied to quality control or status diagnosis of various industrial processes. This technology uses pulsed laser as an inducing tool for emission spectrum analysis, so the development of laser as an excitation light source itself largely determines the application of LIBS technology in the actual process. For the online detection of industrial processes, it is required to reflect the basic characteristics of the measured objects in real time. At the s...

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Problems solved by technology

At present, lasers commonly used in the market include Beijing Leibao Optoelectronics Co., Ltd., Quantel Laser Company of France, Litron Laser Company, etc. However, the lasers provided by them are only suitable for laboratory working environment (temperature 20°C, humidity 30%-70%), and With the increase of running time, the water temperature of the laser cooling water system will rise, and the problem of laser energy attenuation will occur. At most, it can only guarantee continuous operation (4-8) hours, and it is difficult to adapt to the long-term stable and reliable requirements for use in industrial field environments.

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