497
The laser wavelength was 1030 nm and the maximum output power on the workpiece surface was 4 kW .
 enabling technology: laser; process parameter: power; concept or principle: workpiece; concept or principle: surface
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 enabling technology: laser; process parameter: power; concept or principle: workpiece; concept or principle: surface