Wave Optics: Fresnel's Contribution
Wave optics is based on the wave theory of light put forward by Huygen and further developed by various scientists. One of the key contributors to the development of wave optics was Augustin-Jean Fresnel.

Contribution of Fresnel
Fresnel made significant modifications to Huygen's wave theory of light, particularly in the area of diffraction and interference phenomena. He introduced the concept of secondary waves, which helped explain the behavior of light when it encounters obstacles or passes through small openings.

Young's Experiment
Thomas Young's famous double-slit experiment provided experimental evidence for the wave nature of light, further supporting the wave theory put forward by Huygen and modified by Fresnel. This experiment demonstrated interference patterns that could only be explained by the wave nature of light.

De Broglie's Contribution
While De Broglie is known for his work on the wave-particle duality of matter, his ideas also contributed to the field of wave optics. By proposing that particles, such as electrons, could exhibit wave-like behavior, De Broglie expanded the wave theory to encompass not just light but also matter.
In conclusion, wave optics is based on the wave theory of light initially proposed by Huygen and further developed by scientists like Fresnel, Young, and De Broglie. These contributions have shaped our understanding of light as a wave phenomenon, leading to advancements in areas such as diffraction, interference, and the wave-particle duality of matter.