Nanolasers to enable data storage beyond 10 Tbit/in.~2

摘要

A focused ion beam (FIB) fabricated nanolaser is demonstrated to be able to focus light with power of over 250 nW into a 30 nm spot. To fabricate a nanolaser, a 100 nm thick aluminum film was deposited on the emitting edge of a diode laser. FIB was used to etch various apertures into the film. The power was measured by a scanning near-field optical microscope in the near-field regime with a 10 nm separation between the probe and. the air bearing surface of the nanolaser. Out of four different shapes under study, "C"-shape aperture was found to have the highest throughput.