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The effect of process parameters , including laser power and focal point positioning , was evaluated for a fibre laser operated in pulsed wave ( PW ) emission mode .
 process parameters, laser power, fibre laser, emission
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 process parameters, laser power, fibre laser, emission