During operation, when electrical energy or other forms of energy are converted into light energy in a laser, a large amount of heat is inevitably generated. If such heat cannot be dissipated timely and effectively, the temperature of the laser will rise, which will adversely affect its output power, beam quality and wavelength stability. In severe cases, the laser chip and internal optical components may even be damaged. Therefore, efficient and reliable heat dissipation is one of the key technologies to ensure stable performance and extend the service life of lasers. With the continuous increase of laser power and the expansion of application fields, heat dissipation technologies are also undergoing continuous development and innovation. This paper introduces the main heat dissipation methods for lasers and their characteristics.

The wavelength of a laser describes the spatial frequency of the emitted light wave. The optimal wavelength for a particular use case depends largely on the application. In material processing, different materials have unique wavelength absorption characteristics, leading to different interactions with the material. Similarly, atmospheric absorption and interference affect certain wavelengths differently in remote sensing, and in medical laser applications, different skin tones absorb certain wavelengths differently. Due to their smaller focused spot size, shorter-wavelength lasers and laser optics have advantages in creating small, precise features with minimal peripheral heating. However, they are typically more expensive and more susceptible to damage compared to longer-wavelength lasers.

Handheld laser welding, with its high efficiency and portability, has long been a powerful tool for sheet metal processing, hardware manufacturing, and other industries. However, many customers report encountering minor issues when first using it, often due to a lack of mastery of the techniques: issues such as porosity in the weld, lack of penetration, and misaligned red light. However, to minimize downtime, if you experience any of the following issues, please don't rush to report a repair. It may simply be a "false fault." No need to wait for a professional repair person to come, you can easily fix the problem yourself, saving time and effort.

The 2025 Schweissen & Schneiden Essen Germany is now in full swing at Messe Essen, Germany, running from September 15th to 19th. As a quadrennial flagship event in the global welding and cutting industry, Schweissen & Schneiden Essen is widely regarded as the "Olympics of the Welding Sector." This y