Kevin Zhou — Modern Physics Review Problem 2 · Kevin Zhou #XRev.2
Physics · modern-physics
Problem
Problem 14. In classical physics, light waves do not interact with each other, but they can due to
quantum mechanical effects. Suppose two photons traveling in opposite directions scatter off each
other. Initially the photons have wavelengths λ and λ . One of the two outgoing photons exits at
1 2
an angle θ to the first incoming photon. Find its wavelength λ in terms of λ , λ , and θ.
1 2