2 results about "He ne laser" patented technology

The application discloses a vortex light interference device and method for measuring three-dimensional vibration and sound field rotation characteristics, wherein a helium-neon laser emits laser light, the laser light passes through a half-wave plate and a first polarization beam splitter prism, and is divided into object light and reference light; the object light passes through a first spiral phase plate and becomes vortex object light, the vortex object light passes through a second polarization beam splitter prism, a quarter-wave plate, and a beam expander lens, and is irradiated on a test sample surface, reflected light of the sample surface passes through the beam expander lens, the quarter-wave plate, the second polarization beam splitter prism, a beam splitter prism and a focusing lens, and is irradiated on a photodetector; the reference light passes through an acousto-optic modulator to generate frequency modulation, passes through a mirror and a second spiral phase plate to become frequency-modulated vortex light, and the vortex light passes through a beam splitter prism and a focusing lens and is irradiated on the photodetector; a computer calculates and demodulates frequency-modulated signals of the photodetector and modulation signals of the acousto-optic modulator, and finally obtains three-dimensional vibration information and sound field rotation characteristics of the sample.

This invention provides an intelligent control system and method for optimizing the intracavity mode of a high-reflectivity cavity mirror helium-neon laser. The system includes: a mode detection module for real-time detection of the output beam of the high-reflectivity cavity mirror helium-neon laser using a beam analyzer and photoelectric sensors to acquire monitoring data; an intelligent control module for analyzing the monitoring data based on machine learning algorithms and automatically adjusting the angle and position of the high-reflectivity cavity mirror according to optimization requirements; and a compensation module for compensating for laser performance based on environmental and monitoring data. This invention's intelligent control system and method for optimizing the intracavity mode of a high-reflectivity cavity mirror helium-neon laser monitors and optimizes the intracavity mode of the helium-neon laser in real time, greatly improving the output beam quality and stability of the laser. The system can adapt to environmental changes, reducing manual intervention and significantly improving the system's control accuracy and efficiency.