All Categories>
Principle and Development Prospect of Ultraviolet Laser
Release time:
2023-11-17
Number of views:
Foreword
The importance of laser is self-evident, it can be widely used in industry, medicine, communications, military and other fields, and promote the process of social development. Therefore, some people call it another important invention of mankind after the continuation of nuclear energy, computers and semiconductors since the 20th century. Also known"The Fastest Knife", "The Fastest Ruler", "The Brightest Light"The title.
It is the electrons in the atom that absorb energy, transition from low energy to high energy, then fall back from high energy to low energy, and release energy in the form of photons. And the laser, is to be lured (excited) out of the photon queue, the photon optical characteristics of the photon queue are the same, and the pace is consistent.
ultraviolet laser
At present, according to the working medium, the laser can be dividedGas lasers, solid-state lasers, semiconductor lasers and dye lasers4 categories, but also the development of free electron lasers, high-power lasers are usually pulsed output.
The first ruby laser came out in 1960, and the first laser was developed in China in 1961, opening a new chapter in the field of lasers. Laser has the characteristics of good directionality, high brightness, good monochromaticness and good coherence. After more than 50 years, laser technology and application have developed rapidly, and among themall-solid-state ultraviolet laserBecause of a series of advantages such as small size, long life, compact structure and convenient maintenance, it has become one of the future research fields of laser technology.
Ultraviolet laser wavelength is 355nm, small spot, narrow pulse width, multi-wavelength, fast speed, good penetration, less heat, high output energy, high peak power and good material absorption, which belongs to the cold light source; also known as "cold processing", can be better absorbed by the material,The damage to the material is also small, and the relatively regular CO2 laser and fiber laser can meet the vast majority of industrial precision processing requirements.At present, solid ultraviolet lasers are widely used in all walks of life based on various performance advantages, and become one of the mainstream industrial lasers.
Light-emitting principle of solid ultraviolet laser
The laser must have the above three parts,Pump source, working substance and optical resonatorA laser that uses solid laser materials as the working substance. Under the action of the pump source, the working substance has a population inversion distribution and becomes an activated substance, thus having the amplification effect of light. A part of the amplified light is fed back to participate in the excitation, and the resonant cavity oscillates, and laser can be generated after certain conditions are met.
1. Pump source: Its function is to give energy to the working substance and excite the atom from low energy level to high energy level. Usually there can be light energy, thermal energy, electrical energy, chemical energy and so on.
2, working material: the core of the laser, only the material that can achieve energy level transition can be used as the working material of the laser.
3. Optical resonant cavity: make the stimulated radiation of the working substance continuously; continuously accelerate the photon; limit the direction of laser output.
Laser marking principle
Laser marking is the use of high energy density laser on the workpiece for local irradiation, so that the surface material vaporization or color change of chemical reaction, thus leaving a permanent mark of a marking method. Laser marking can print a variety of characters, symbols and patterns, and the character size can be from millimeters to microns, which has a special meaning for the anti-counterfeiting of products.
The focused very fine laser beam is like a cutting tool, which can remove the surface material of the object point by point. Its advanced nature is that the marking process is non-contact processing, and no mechanical extrusion or mechanical stress is generated, so it will not damage the processed object. Due to the small size, small heat affected area and fine processing after laser focusing, some processes that cannot be realized by regular methods can be completed.
application and development
Driven by the 3C application market, China'sultraviolet laserThe market is developing rapidly. After 2017, the market showed a straight-line growth trend. In 2018, the market demand for ultraviolet lasers dropped slightly. Affected by the epidemic situation, many processing industries developed slowly and began to grow slowly in 2019. Although it was not as hot as 2017, it showed a slight growth trend compared with 2018, reflecting the application and development trend of ultraviolet lasers in China today.
Technology Fortress
Ultraviolet laser as the mainstream direction of industrial processing, in recent years, the development of ultraviolet laser like fiber laser, power continues to improve, from the earliest3W, 5W, to 10W, 15W, to 30W, 40 W extension.
In view of the continuous improvement of laser processing efficiency and requirements for industrial applications, nanosecond ultraviolet lasers with more than 5 W have become the new darling of the market. Therefore, high-power nanosecond ultraviolet lasers with high power, narrow pulse width and high repetition rate can meet the requirements of different customers for different processing applications on ultraviolet laser output power.
In order to adapt to the improvement of industrial processing accuracy requirements,radium laserIndependent research and development and production of solid ultraviolet laser, according to the domestic use environment, this series of products using full air cooling and water cooling two forms, product performance is stable, small size, compact structure, low power consumption. The output laser beam is the fundamental mode, with good beam quality and high peak power, which can meet the requirements of most industrial precision processing.
development prospect
Affected by the epidemic, many processing industries are facing sales difficulties, slow resumption of work and other issues, but with the arrival of the 5G era, the rapid development of the 3C industry, giving birth to the FPC processing market demand. With the further development of the 5G industry and the pursuit of flexible OLED displays by major electronic product manufacturers, the market demand for FPC flexible circuit boards has grown rapidly, and the demand for UV lasers will also grow rapidly.
The domestic laser market is in a stage of rapid development. Previously, the country has successively introduced favorable policies to support the development of the industry and the future. The development of the laser industry is very important, and the country will introduce better policies. At present, China's laser market China's high yield still has room to rise. In the future, driven by favorable policies and market development, the localization rate of China's laser market will be further improved.
With the further popularization and application of laser technology, in order to meet the various needs of lasers in the market, lasers will gradually move towards serialization, combination, standardization and generalization. The gradual upgrading of laser industry technology, the future in the electronics manufacturing industry, communications industry, integrated circuit industry and other fields of application will continue to expand, the market demand will gradually rise.
The future of industrialized products will only move in the direction of convenience and integration. The same is true for lasers, which are small in size, light in weight, integrated circuits and optical circuits, high in power, and good in stability. Therefore, high-power integrated models have become inevitable. Development trend.
Related News
Exploring the Benefits and Applications of Nanosecond Lasers in Optoelectronic Components
Nanosecond lasers, characterized by their ability to emit pulses of laser light with durations in the range of nanoseconds, have become a pivotal technology in the realm of optoelectronic components. Their rapid pulse duration allows for unique applications that set them apart from traditional laser technologies. One of the most significant advantages of nanosecond lasers is their precision in mat
Understanding Water-Cooled UV Devices: Enhancing Efficiency in Optoelectronic Applications
Water-cooled UV devices play a critical role in various applications within the optoelectronic industry, particularly in conjunction with lasers. These systems are designed to efficiently manage and dissipate heat generated during UV production, maintaining optimal performance and longevity for sensitive electronic components. Understanding the workings and benefits of such devices can significant
Unleashing Precision: The Essential Guide to Water-Cooled UV Lasers
Water-cooled UV lasers represent a significant advancement in the field of photonic devices, particularly within the electronics industry. These lasers utilize a water-cooling system to maintain optimal operating temperatures, ensuring consistent performance and longevity. Understanding the functionality and advantages of water-cooled UV lasers can greatly enhance manufacturing processes and produ
Understanding Water-Cooled Ultraviolet Lasers and the Importance of CE Certification
Water-cooled ultraviolet (UV) lasers represent a pivotal innovation in the field of laser technology, particularly within the electronic components and optoelectronic devices sector. These lasers utilize water as a cooling medium to maintain optimal operating temperatures, thereby enhancing performance, extending lifespan, and improving the safety of the equipment. The efficient heat dissipation o
Unlocking the Potential of UV Laser Marking in Optoelectronics
UV laser marking is a cutting-edge technology increasingly utilized in the optoelectronic component sector, particularly in the marking of electronic parts and devices. By harnessing the unique properties of ultraviolet (UV) light, UV laser marking creates high-contrast, permanent markings on a variety of materials, including plastics, metals, ceramics, and glass. This marking process is vital for
Comprehensive Safety Precautions When Working with Infrared Picosecond Lasers
Comprehensive Safety Precautions When Working with Infrared Picosecond Lasers Table of Contents 1. Introduction to Infrared Picosecond Lasers 2. Understanding the Risks Associated with Infrared Picosecond Lasers 3. Personal Protective Equipment (PPE) for Laser Safety 4. Workspace Safety: Organizing Your Environment 5. Essential Laser Safety Protocols 6. Importance of Train
Address
902, Building 3, Baolong Specialized Special New Industrial Park, No. 20 Nantong Avenue, Baolong Street, Longgang District, Shenzhen