Question

Problem 67. Extra credit (10 pts) Consider three coherent beams of irradiances I1; I2 = 2 I1, and I3 = 2 I1. Assume that the three beams begin in phase and then travel dierent distances before being combined at a detector. A) What is the maximum possible irradiance that could be measured at the detector and under what circum- stances does this maximum irradiance occur? B) What is the minimum possible irradiance that could be measured at the detector and under what circum- stances does this minimum occur?

Answer 1