Hard light science fiction typically has a strong focus on the scientific principles behind light. One aspect could be the use of light for energy generation in a more advanced and efficient way than we currently understand. It can also show how light can be harnessed for things like cloaking devices, by bending light around an object. In addition, it might deal with the idea of light - based life forms, where organisms use light not just for vision but for all aspects of their existence.
Hard light science fiction often features scientifically accurate or plausible concepts related to light. It might explore things like the manipulation of light for advanced technologies, such as using light as a weapon or for super - fast communication. For example, in some stories, they could use focused beams of hard light to cut through objects like a laser. It also may involve the study of light's properties in extreme conditions, like in deep space or near black holes.