本题目来源于试卷: Quantum Mechanics of Atoms,类别为 IB物理学
[问答题]
Show that the diffractive spread of a z,r1ipy.a +g1kwfia x f1:l,dlaser beam,) whnqd a5+f/)yg + ipc:evh-q $$\theta \approx \lambda/D$$ , is precisely what you might expect from the uncertainty principle. [Hint: Since the beam's width is constrained by the dimension of the aperture D, the component of the light's momentum perpendicular to the laser axis is uncertain.]
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