Single-Slit Diffraction: Transitioning from Geometric Optics to the Fraunhofer Regime

• Christopher L. Panuski ^[1] ; Carl E. Mungan ^[1]
  1. [1] Naval Academy

     Naval Academy

     Turquía

     
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 54, Nº. 6, 2016, págs. 356-359
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Suppose a red laser beam (of wavelength λ equal to 0.660 μm) is expanded using an optical telescope into a collimated, approximately plane wave that is 5.68 mm in diameter. Pass that beam through a tall rectangular slit whose width a is gradually reduced from 3.30 to 0.100 mm. Look at its image on a screen located at a distance L from the slit equal to 0.656 m. As the slit is narrowed, you predict that the width of the pattern will:

    (A) smoothly increase, (B) smoothly decrease, (C) increase and then decrease, or (D) decrease and then increase.