What Is The Life Of The Lasers Related To?

The service life of various lasers is different. Generally, the life standard of semiconductor lasers (thousands to 10,000 hours) is less than that of gas lasers (more than 10,000 hours), and the life standard of gas lasers is less than that of solid-state lasers (more than tens of thousands of hours). Standards are smaller than fiber lasers (hundreds of thousands of hours).

In addition to the different life of the laser, what is the life of the laser related to:
1. Working conditions: Lasers have different service life under different working conditions. For example, use under high temperature, high humidity, high altitude, and poor environmental conditions will cause problems such as material expansion, stress concentration, etc., which will reduce the performance and life of the laser. Keeping the laser working under suitable environmental conditions and controlling the temperature range of the laser material can reduce the occurrence of temperature-related aging and failure phenomena.

2. Working time: The life of the laser is usually proportional to the use time. Laser lifetimes are typically thousands to tens of thousands of hours under normal use. The laser needs to be driven by current when it is working. Too large or too small current will affect the life of the laser and accelerate the aging of the laser. Therefore, it is necessary to control the appropriate working current according to the current specification provided by the laser manufacturer. Repeated switching will lead to the concentration of stress inside the device, stimulate unstable phenomena such as spontaneous emission, and accelerate the aging process. Therefore, frequent switching of the laser should be avoided.

3. Manufacturing quality: The impurity content of the materials used in the laser is also an important factor affecting the life of the laser. Using materials with excessive amounts of impurities other than the desired dopant can result in a shortened laser lifetime. A good manufacturing process can reduce defects and impurities in the device and improve the reliability and life of the laser. JTBYShield selects high-quality raw materials, and adopts advanced manufacturing technology and structural design to ensure the quality and stability of laser manufacturing.

4. Cooling method: For some high-power lasers, the efficient cooling method will also affect the life of the laser, and the service life is long with good heat dissipation efficiency.

5. Maintenance and maintenance: Regular maintenance and maintenance can prolong the service life of the laser, such as regularly wiping the lens parts, cleaning the dust in the radiator, etc., which can reduce the probability of laser failure and prolong the service life of the laser. However, during the long-term use of the laser, various failures may occur and maintenance is required. This article will introduce the maintenance of lasers from the following aspects.

Common Typical Faults
(1). Laser beam deflection problem
Beam deflection is usually due to the poor condition of the optics assembly, which cannot maintain proper mode matching and positioning, resulting in reduced transmit power. During maintenance, it is necessary to check whether the light source, beam divergence controller, and mirror surface are damaged or loose.

(2). Laser cooling problem
Lasers generate a lot of heat during use and require cooling to prevent damage to the components. If the cooling system fails, the laser can overheat and stop working. Cooling system problems include insufficient pump water flow, too high pump temperature, problems with the water cooling pipeline or flow water in the water cooler, etc.

(3). Output power drop problem
Drops in output power are usually due to contamination of optics and cavity surfaces, dust accumulation in lenses and windows, or damage to the laser media. Cleaning the optics, especially the mirrors and output rods, will often restore power.

(4). Laser clamp failure problem
Laser clamp failures are usually caused by electrical connection problems, such as loose clamps, burnt lines, unstable drive current, etc.

Simple maintenance methods for the above problems
(1). Clean
Keeping the laser clean is an important measure to prevent failures. Before cleaning, it is necessary to disconnect the power supply and wait for the ambient temperature to return. Cleaning involves wiping the surfaces of the optics to remove dust and smudges, especially the mirrors and output rods. Use a clean cotton cloth and detergent to clean, be careful not to wet other parts.

(2). Replacement parts
In the event of damage to parts or the expiration of their life, replacement work is required. Before replacing, it is necessary to ensure that the spare part is the same as the equipment or has similar performance. When replacing parts, it is necessary to disconnect the power supply first and assemble in the correct order.

(3). Check the circuit
When the laser is not working properly, its circuit needs to be checked. Before the inspection, it is necessary to confirm the safety measures and disconnect the power supply. The inspection process includes looking for circuit boards and cables for shorts, loose or other failures, and for worn out components that need to be replaced. If you cannot determine the point of failure, you can find the problem by measuring various parts of the circuit.

(4). Check the cooling system
If the laser is unable to maintain temperature or is not cooling, there may be a problem with the cooling system. The inspection process mainly includes checking the status of water flow, temperature sensor and cooling pump. Before checking, the power must be disconnected first.

Laser Repair
Laser maintenance is a difficult, high-risk, high-tech job that requires rich operating experience and relevant knowledge. In the maintenance process, it is necessary to correctly analyze the fault, adopt the corresponding maintenance method, and ensure the operation safety. At the same time, it is also very important to maintain the laser well, which can effectively prolong the life of the equipment and ensure its normal and stable work. The use of various maintenance methods should follow safe operating procedures to ensure the safety of personnel and equipment.

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