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Currently , there are no commercial options for a laser power controller that allows continuously variable power to be used as a galvanometer system adjusts the laser position .
 process parameter: laser power; machine or equipment: controller; process parameter: power; material: be; material: as; enabling technology: laser
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: laser power, controller, power, be, as, laser 
Answer:
 process parameter: laser power; machine or equipment: controller; process parameter: power; material: be; material: as; enabling technology: laser