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Direct diode lasers (DDLs) generate laser energy directly from laser diodes without additional amplification in a fiber or crystal. This simple construction provides high conversion efficiency and makes direct diode lasers well suited for precision thermal processes such as laser soldering.
Direct diode lasers typically operate in the near-infrared range. AMADA WELD TECH direct diode lasers operate at 915 nm, a wavelength that interacts efficiently with metals and plastics.
Laser soldering selectively heats solder using focused laser energy to form a bond between two parts. Direct diode lasers provide precise, localized heat input that can be rapidly controlled by turning the laser energy on and off.
Key advantages include:
Localized heating is particularly valuable when soldering small or heat-sensitive components because energy can be concentrated at the solder joint while limiting heating of adjacent components.
Temperature control provides an additional level of process control for precision laser soldering. The temperature at the processing area can be monitored and used as feedback to control laser output power, helping maintain consistent heating during the soldering process.
This capability is particularly useful for applications where precise thermal control is important to produce consistent solder joints.
Direct diode laser soldering is particularly well-suited for electronic circuit board assembly, including:
Direct diode lasers can use fixed or galvo scanning optics, providing flexibility in how laser energy is delivered to the soldering application.
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