Explain the difference between Fresnel diffraction and Fraunhofer diffraction. Comment on the behaviour of the fields...

Transcribed Image Text:

Explain the difference between Fresnel diffraction and Fraunhofer diffraction. Comment on the behaviour of the fields and how they interfere in each zone. Is there a sudden or smooth transition from the Fresnel zone to the Fraunhofer zone? (3 marks) Describe how you would write a Python code that could model the far-field diffraction pattern of a rectangular aperture source. Note: Precise syntax is not required, just a description of the steps to be taken in the code. (4 marks) State the analytical function that results from solving the far-field problem of a one- dimensional slit with a width of 2a, and explain each term in the function. (3 marks) For a one-dimensional slit with a width of 0.2mm illuminated with light of wavelength 4 microns, calculate the position of the first null and first secondary maximum on an observation screen 10 m from the source. Ac(4 marks) ws Go to Settin Explain the difference between Fresnel diffraction and Fraunhofer diffraction. Comment on the behaviour of the fields and how they interfere in each zone. Is there a sudden or smooth transition from the Fresnel zone to the Fraunhofer zone? (3 marks) Describe how you would write a Python code that could model the far-field diffraction pattern of a rectangular aperture source. Note: Precise syntax is not required, just a description of the steps to be taken in the code. (4 marks) State the analytical function that results from solving the far-field problem of a one- dimensional slit with a width of 2a, and explain each term in the function. (3 marks) For a one-dimensional slit with a width of 0.2mm illuminated with light of wavelength 4 microns, calculate the position of the first null and first secondary maximum on an observation screen 10 m from the source. Ac(4 marks) ws Go to Settin

Answer rating: 100% (QA)

Explain the difference between Fresnel diffraction and Fraunhofer diffraction Fresnel diffraction and Fraunhofer diffraction are two types of diffraction that occur when light waves pass through a nar... View the full answer