41. A method, comprising:
directing input optical radiation onto metallic features of a structure, wherein the features have a spatial configuration
selected to increase optical transmission from an emission region in the structure beyond what the optical transmission from
the emission region would be in the absence of the features; and
directing output optical radiation emanating from the emission region onto a recording medium, in order to heat the recording
medium and thereby assist in the recording of data in the recording medium, wherein the optical transmission from the emission
region is higher as a result of at least one surface plasmon mode generated by said directing of input optical radiation onto
the features.
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