Lambda waves are super fast triangular waves. They are in the range of 100-200Hz, and they happen on top of epsilon waves. They are associated with wholeness and integration of your whole being and the experiences you get daily out-of-body experiences, hyper-focus, and more.
As most people are living in beta and alpha, the field will take some time to speed up things. Using it with meditation, the field can show you other deeper levels that you haven’t seen until now.