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Short-Pulse Q-Switched Lasers Enhance Precision Marking Applications

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Oliver Haupt and Frank Gäbler

A new subnanosecond operating regime outperforms fiber lasers – at a lower cost than ultrafast, mode-locked lasers. The demand for high-precision marking continues to grow, particularly driven by various microelectronics applications. Cost-effective lasers with pulse widths of several hundred picoseconds appear to be particularly well placed to satisfy the needs of these applications by offering a unique combination of favorable marking and cost characteristics. Several laser technologies currently service a range of marking applications. Typical examples include producing...Read full article

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    Published: June 2013
    Glossary
    laser marking
    Laser marking is a process in which a laser beam is used to mark or engrave a surface by altering its properties or appearance. This technique is widely used for labeling, identification, and decoration of various materials, including metals, plastics, ceramics, glass, and more. Laser marking provides a permanent and high-precision method for adding information or graphics to a wide range of objects. Key features of laser marking include: Contactless process: Laser marking is a non-contact...
    mode-locked lasers
    Mode-locking is a technique used in lasers to produce ultrashort pulses of light with durations on the order of picoseconds, femtoseconds, or even attoseconds. This method synchronizes the phases of different longitudinal modes within the laser cavity, causing them to interfere constructively and generate a train of short pulses. Here is a basic overview of mode-locked operation in a laser: Longitudinal modes: Lasers support different longitudinal modes, each corresponding to a specific...
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