Interfering near field transducer for energy assisted magnetic recording

A magnetic storage disk drive, comprising:

• a rotatable magnetic storage disk;
• a laser diode;
• at least one dielectric waveguide core configured to receive incident light energy from an energy source and direct the incident light energy to a target;
• and
• a near field transducer formed at or near an air bearing surface of a magnetic recording device and configured to focus the light energy received from the at least one dielectric waveguide core and to transmit the focused light energy onto the storage disk surface to generate a heating spot on the storage disk, the near field transducer comprising:
• at least one propagating surface plasmon polariton (PSPP) element configured as a plasmonic metal ridge;
• wherein the at least one PSPP element is disposed above a surface of a corresponding one of the at least one dielectric waveguide core in a longitudinal alignment;
• and
• wherein the at least one PSPP element is configured with a width approximately equivalent to the width of the heating spot.