The Reliable Code | Optical Design and Process Control with High Reliability (Part 2)

△ Huachuang Hongdu Highly Reliable Solid Lasers

In ” Reliability Cryptography | Optical Design and Process Control for High Reliability ( Part 1 ) ” In an article,we mentioned ” as the ‘ heart ‘ of the laser,the reliability of the optical system directly determines the overall performance and life of the laser.” In the high-reliability system of solid-state lasers,the optical reliability part is as important as the precision optical design and manufacturing technology,the laser ‘s ability to adapt to the actual complex environment,and the long-term maintenance and monitoring strategy.

This article will continue from the previous article,focusing on the improvement of environmental adaptability and the implementation of maintenance and monitoring strategies,Explain how to ensure that lasers maintain excellent performance and long-term stability under various harsh conditions through these key measures,and achieve the key leap from ” laboratory performance ” to ” field reliability.”

03 Improving Environmental Adaptability

In actual applications,lasers often face various complex environmental conditions,such as temperature changes,humidity changes,and vibration shock,which may have a significant adverse effect on the performance and life of optical components.

For example,temperature fluctuations can lead to thermal deformation of optical components,causing problems such as deterioration of beam quality and decrease of focus accuracy;Changes in humidity may cause optical surface corrosion,membrane peeling or internal disclosure,affecting transmission and reflectivity;Vibration shock may cause optical components to disintegrate,optical path errors and even mechanical damage.

Therefore,improving the environmental adaptability of lasers is an important measure to ensure their optical reliability,especially in harsh applications such as industrial processing,aerospace,medical equipment,etc.The environmental adaptability directly determines the stability and life of lasers.

Temperature Control

  • In terms of temperature changes,it shall be used with low thermal expansion coefficient of optical materials and structural design to reduce the impact of temperature changes on the performance of optical components.

For example,melted quartz glass was chosen as an optical substrate,and its thermal stability was significantly better than ordinary glass,which effectively inhibited face deformities caused by temperature fluctuations.

  • Can also adopt high precision temperature control system.

For example,the semiconductor temperature control module based on PID algorithm controls the temperature fluctuation inside the laser to ± 0.1 ℃ or less,and adjusts the cooling power through real-time temperature feedback to ensure that the optical components work in a constant temperature environment.

△ Huachuang Hongdu Reliability Solid Laser Temperature Testing Platform

Changes in Humidity

  • In terms of humidity changes , it is necessary to use optical materials with good moisture-proof performance and seal structure design to prevent moisture corrosion and contamination of optical components.

For example,coating a hydrophobic film on the surface of an optical element can significantly reduce the water vapor adsorption rate and reduce the transmission rate decrease due to discharge.For the laminator chamber,the multi-layer sealing design,combined with metal flanges and rubber O-rings,ensure air tightness to IP65 or above.

  • At the same time,you can integrate a desiccant module or a small dehumidifier inside the laser,and control the internal humidity to 10 % RH or less by circulating the drying airflow to avoid moisture penetration causing optical performance degradation.

Vibration Shock

  • In terms of vibration and shock,it is necessary to adopt structural design and fixing mode with good shock-absorbing performance to reduce the influence of vibration and shock on optical components.

For example,the use of shock-absorbing footings can significantly reduce the transfer rate of external vibrations,effectively isolating ground vibrations or mechanical disturbances generated by equipment operation.Low stress assembly process is preferred for optical components to avoid stress concentration caused by screw fastening.

  • At the same time,vibration sensors and impact sensors can be integrated to monitor the laser’s vibration spectrum and impact energy in real time and trigger protection mechanisms through closed-loop control systems.

For example,when vibrations exceeding a threshold are detected,the system can automatically adjust the position of the optical element or pause the laser output to prevent optical path errors;After the impact event,the optical alignment accuracy is restored through self-calibration algorithms to ensure the reliability of the laser in transport or use.

△ Huachuang Hongdu Highly Reliable Solid Laser Vibration Test Platform

Through the above multidimensional environmental adaptability design,the laser can operate steadily in harsh environments,significantly improving the reliability of the laser in extreme conditions such as industrial automation and field monitoring,and providing long-term stable light source support for precision applications.

04 Maintenance and Monitoring Strategies

Regular maintenance and monitoring is an important measure to extend the optical service life of lasers and ensure their reliability.

Regular maintenance can detect and treat problems such as pollution,wear and aging of optical components in a timely manner,so as to avoid these problems adversely affecting the performance of lasers.Through real-time monitoring,the optical performance and working state of the laser can be mastered at any time,and potential problems can be discovered and handled in a timely manner.

Laser Maintenance

  • In the area of maintenance,detailed maintenance plans and operational procedures should be formulated to ensure the standardization and effectiveness of maintenance work.

For example,regularly clean the surface of optical components to remove dust and dirt; Regularly check the wear and age of the optical components and replace damaged optical parts in a timely manner.

Laser Monitoring

  • In terms of monitoring,advanced optical detection technology and equipment can be used to monitor parameters such as laser power output and stability in real time.At the same time, data analysis and processing technology can be used to analyze and process monitoring data to detect and address potential problems in a timely manner.

The high reliability of solid lasers – optical reliability is the key to guaranteeing their stable operation and long-term use.Through optical component selection and optical scheme design,optimization of solid laser manufacturing process,improvement of environmental adaptability,and implementation of maintenance and monitoring strategies,the optical reliability of lasers can be effectively improved to meet the needs of different application scenarios.

Huachuang Hongdu focuses on high-reliability solid-state laser technology,interpreting the pursuit of reliability with practical actions.From program design and component selection to manufacturing processes and cleaner production,From the active adaptation of the environment to the monitoring of the whole process of operation and maintenance,each step is deeply committed to the “high reliability” promise,thus creating a truly trustworthy product to provide a solid support for the stable operation of key fields such as precision processing and scientific research.

Trailer for the series

This article is the opening of the “High Reliability” series on optical reliability.Subsequently, we will dive into the areas of stability design of mechanical structures and precise regulation of electric control systems to systematically build a complete technical system for high-reliability lasers,so please continue to pay attention.

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