What does 'spot size' refer to in laser operations?

'Spot size' in laser operations refers to the diameter of the laser beam at the focus point. This measurement is crucial because it directly affects the concentration and intensity of the laser energy delivered to a specific area. A smaller spot size means that the laser energy is more concentrated, which can lead to more effective and precise treatments in applications like surgery, material engraving, or cutting. Conversely, a larger spot size disperses the energy over a wider area, which may result in less effective treatment in terms of precision and energy delivery.

Understanding spot size is vital for laser operators because it influences the outcome of the procedure, including factors such as penetration depth, thermal effects, and potential tissue damage in medical applications. This characteristic is essential for optimizing laser performance and achieving desired results.