No, higher energy/intensity electromagnetic waves cannot lower the frequency of a lower energy/intensity electromagnetic wave through any natural processes. The frequency of an electromagnetic wave is determined by its source and remains constant unless influenced by external factors.
The energy and intensity of an electromagnetic wave are related to its amplitude, which corresponds to the strength or magnitude of the wave. Increasing the energy or intensity of a wave does not alter its frequency. Instead, it affects the wave's brightness or the number of photons present per unit area.
The frequency of an electromagnetic wave can only be altered through specific processes that involve interactions with matter. Some of these processes include:
Doppler Effect: When a source of electromagnetic waves or an observer is in motion relative to each other, there is a change in frequency due to the relative motion. This effect is commonly observed in sound waves, but it also applies to electromagnetic waves.
Scattering: When an electromagnetic wave interacts with particles or objects in its path, it can be scattered, and the scattered wave may have a different frequency than the incident wave. However, the frequency shift in scattering is typically negligible unless specific conditions are met, such as in certain types of Raman scattering.
Nonlinear Optical Processes: Certain materials can exhibit nonlinear optical properties, which means they can interact with intense electromagnetic waves and produce new waves with different frequencies. Examples include frequency doubling (generating a wave with twice the frequency) or frequency mixing (combining two or more waves to produce a new wave with a different frequency).
These processes can modify the frequency of electromagnetic waves, but they require specific conditions, materials, or relative motion between the source and observer. In general, naturally occurring electromagnetic waves do not change their frequency due to variations in energy or intensity alone.