7148
When the entire emitted beam has a planar , spatially coherent wave front , it approximates Gaussian beam profile and has the lowest divergence for a given diameter .
 person: Gaussian
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Gaussian