John Analetto was convicted in May of threatening a gambler who owed thousands of dollars to a bookie who was cooperating with investigators.
Analetto was fired in June after a 19-year career.
But prosecutors say the 49-year-old Analetto had a history of threatening behavior and had abused his authority as a police officer numerous times in the past.
The prosecutors said in court that Analetto thought himself “untouchable.”
His lawyer said his client’s actions were just bravado brought on by alcohol abuse and a gambling addiction.
Aanaletto apologized in court Thursday for letting down his family, his country, his profession and his colleagues.