The Wave Nature of light: Interference Chapter 30 2. Young's Double-slit Experiment p683-686 D) Schematic diagram of Youngs Double-slit experiment B S1‖0 rr X O D
The Wave Nature of Light; Interference Chapter 30 1). Schematic diagram of Young’s Double-slit experiment p 1 s 2 s s x o o B d 1 r 2 r D r 2. Young’s Double-slit Experiment p683-686)
The Wave Nature of light: Interference Chapter 30 2). The path length difference波程差 B S1(0 S 0 /s D>>d eIJQ会Q=D △ r;≈ d sin e=d xD
The Wave Nature of Light; Interference Chapter 30 p 1 s 2 s s x o o B d 1 r 2 r D d sin tan = x / D D x = d D r r = r2 − r1 d sin 2). The path length difference 波程差
The Wave Nature of light: Interference Chapter 30 3)interference pattern lines S and s, are portions of the same incident wave, so they are in phase 土mm=0,1,2, Bright fringe E); constructive interference d sin 0= 土(m+)λm=0,1,2, ( Dark fringe暗);d estructive interference m: order of the interference fringe Constructive interference will occur when the path. difference equals a whole number of wavelengths. Destructive interference occurs when the path difference is 72, 1/3 and so on
The Wave Nature of Light; Interference Chapter 30 S1 and S2 are portions of the same incident wave, so they are in phase : (Bright fringe明); constructive interference m=0, 1, 2, … m=0, 1, 2, … m ) 2 1 (m + (Dark fringe暗); destructive interference d sin = 3) interference pattern lines m: order of the interference fringe. Constructive interference will occur when the path difference equals a whole number of wavelengths. Destructive interference occurs when the path difference is ½,1/3 and so on
The Wave Nature of light: Interference Chapter 30 干涉条纹图样 6328nm的氦氖激光器产生的干涉条纹 5893nm的钠黄光产生的干涉条纹
The Wave Nature of Light; Interference Chapter 30 干涉条纹图样 632.8nm的氦氖激光器产生的干涉条纹 589.3nm的钠黄光产生的干涉条纹
The Wave Nature of light: Interference Chapter 30 △r=d D m,元m=0,1,2,明 x △尸 1、D 土(m+ λm=0,1,2,…,暗
The Wave Nature of Light; Interference Chapter 30 r d D x = = d D m d D m ) 2 1 ( + m=0, 1, 2, …明 m=0, 1, 2, …暗 D x r = d