This kind of wave is termed as right circularly polarized light.

Suppose that the phase difference is such that equation 2 reduces to

                  ............................ (7)

In the above case the tip of the electric field will be encircling with a frequency but in anti clockwise direction as shown in fig 2. This kind of wave represented by eq 7 is termed as left circularly polarized light.

Fig 2 : Left circulary polarized light