34. Wave Optics
Diffraction
34. Wave Optics Diffraction
5PRACTICE PROBLEM
A thin film of magnesium fluoride (MgF2) is deposited onto a glass substrate. The refractive index of MgF2 is lower than that of the substrate. The thickness of the film was controlled to be 630 nm. When a beam of light of wavelength 580 nm illuminates the film, the reflected light is at its maximum intensity. And when a beam of light of wavelength 696 nm illuminates the film, the reflected light is at its minimum intensity. Calculate the refractive index of MgF2.
A thin film of magnesium fluoride (MgF2) is deposited onto a glass substrate. The refractive index of MgF2 is lower than that of the substrate. The thickness of the film was controlled to be 630 nm. When a beam of light of wavelength 580 nm illuminates the film, the reflected light is at its maximum intensity. And when a beam of light of wavelength 696 nm illuminates the film, the reflected light is at its minimum intensity. Calculate the refractive index of MgF2.