What are the special features of laser light? Laser light is unique because of three inherent features: - Coherence: Coherence is the property that represents a uniform wave front, that is, the peaks and valleys of the waves are aligned as the light exits the laser, which allows the light to be in phase and focused to very small areas. This also allows the energies to be additive.
- Monochromaticity: This means all light waves have the same wavelength. Some lasers produce more than one wavelength of light, but these are predictable and the laser still produces only those specific wavelengths of light expected by the laser medium used.
- Collimation: This means that all of the light exiting the laser is parallel and will not diffuse over distances.
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