The period from AD 1745 to 1798 is known as-

The Neo-classical period (1660-1798) comprises three shorter ages:
1. The Restoration Period (1660-1700),
2. The Augustan Age or the Age of Pope (1700-1745) and
3. The Age of Sensibility or The Age of Johnson (1745-1798).
Source: An ABC of English Literature - Dr M Mofizar Rahman