A good history about the so called "Laurie list". There is a commission to study implementing a Laurie list set for a final meeting on October 7, 2015. As stated in this article there is no statewide list and each prosecutor is tasked with keeping track of police with issues affecting credibility.
http://indepthnh.org/2015/10/05/the-trouble-with-laurie-20-years-later/