Nanosecond solid-state lasers are great for glass marking applications

As a very common material, glass is widely used in daily life, construction, industry, instrumentation, medical and health, etc., and various glass products emerge in an endless stream.

For decoration, distinction, statistics, anti-counterfeiting and other purposes, marking on the glass surface has become a common way, such as simple methods such as sticking self-adhesive labels, or through traditional inkjet, ink, silk screen, pneumatic marking. Other methods... Due to various limitations of technology and processing tools, the glass marking effect is not ideal. On the one hand, there are phenomena such as missed marking and wrong marking, and on the other hand, the past markings may fall off or become blurred over time. , causing some troubles to users, and it is not an easy task to evenly mark glass products with irregular surfaces such as curved surfaces.

Glass marking urgently needs a way to achieve long-term marking, and people have also carried out long-term exploration in this field.

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Since glass is a fragile item, the uniform marking on the surface of glass products requires high process requirements. Laser marking belongs to non-contact processing, which has the characteristics of high peak power, delicate marking effect and high processing efficiency. It is very suitable for marking the surface of glass products.

When the laser is irradiated on the glass surface, part of it will be reflected on the surface, and the other part will pass through. Due to the high transmittance of glass, when using laser marking, a strong energy density is often required. The nanosecond solid-state laser developed and designed by RFH can choose to output ultraviolet laser with a wavelength of 355nm, with short wavelength and high beam quality, M2<1.2, can form a very thin beam, only micron level, narrow pulse width (<15ns@40kHz) , the energy is concentrated, which can bring very high peak power, and the heat affected zone is small during processing.

After industrial integration, through the setting of marking parameters, adjust the scanning mode and speed, adjust to the appropriate focal length, achieve the best spot focal depth, and then achieve clear marking, taking into account the marking of curved glass and flat glass, can be On the glass material, marks including pictures, text, numbers, trademarks, barcodes, production batch numbers, etc. are realized.

In fact, RFH has fully considered the needs of diversified production in industrial production when designing and developing products. This nanosecond solid-state laser has a stable overall structure and strong expansibility. Models with various powers and wavelengths are available. For example, the output power of the 355nm wavelength ultraviolet laser can be selected to be greater than 5W and greater than 30W, and the average output power of the 532nm green laser can reach 40W, which brings a variety of choices for the field of high-precision micromachining.