I'm looking for a credible technology which could be used as a shield for a spacecraft sometime within the next 100-200 years.
Not necessarily a spherical shield which covers the whole ship, it would only need to sweep aside micrometeorites and other debris, much like the way the bow of a ship cuts through water. The higher the velocity of the ship, the more water is displaced.
Another analogy might be the way that the Van Allen belt diverts radiation to flow around the Earth.
If it can refract laser light so that it doesn't reach the ship itself, but bends around it, that would be a win as well.
The idea of an almost solid shield which has missiles, fighters, small planets etc. exploding uselessly against it is not really what I'm looking for. But by all means, if that might be feasible I'd be all for it.
Another direction might be to have a superheated plasma around the nose of the craft which burns through micrometeorites.
Or something else that is able to convert the kinetic energy from the velocity of the micrometeorite into enough heat to destroy it before it can do any damage.
My approach to this is that larger objects could be detected at a distance and avoided wit only a small evasive manoeuvre, but micrometeorites would be more difficult to detect in time.
The spacecraft is to operate away from any large planets, in the asteroid belt. Lots of dust and debris, but no large gravitational masses around, except the larger asteroids.
EDIT: @Jim2B suggests that the four known forces would be unlikely to help in the way I would like. Any other options? Remember, this has to be credible, not necessarily factual with current technology.