Further technological advancement has led to the development of other types of machines applicable in engravings, such as UV and MOPA laser markers. However, its real use in engraving wouldn’t be until the advent of CO2 lasers in 1967. Laser became an important part of drilling when Western Electrics made the first laser machine in 1965. Gordon Gould would be credited with making the original laser light. Theodore Maiman created the first optical laser. The beginning of the laser engraving process would be premised on Albert Einstein’s idea of LASER 1916 and its optimization in the 1950s. Manual engraving evolved over the years due to technological advancement. Currently, the oldest manually engraved part dates to about 500,000 years ago. For example, stones were engraving tools about 500,000 years ago. Manual engraving is a process that involves using a sharp object (engraving tool) to inscribe a marking on the part. Laser engraving’s history cannot begin without talking about manual engraving.
Alongside laser etching, annealing, ablation, and other laser marking technologies, the process forms a set of highly reliable processes in traceability, identification, and product decoration. The process is suitable for marking logos, barcodes, serial numbers, and QR codes on parts.
Consequently, it forms permanent markings with higher contrast than the unmarked regions on the part or product. The process involves using a laser marking machine which we will call a laser engraving machine, to vaporize specific areas on almost any material.
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