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Chris Chase EE235 4/9/07

Chris Chase EE235 4/9/07. Introduction. Nanowire Lasers Applications Potential solution for a laser integrated on silicon Nanowires act as a natural laser cavity Nanowire facets act as mirrors Nanowire itself guides light This makes a nanowire a natural Fabry-Perot Cavity.

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Chris Chase EE235 4/9/07

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  1. Chris Chase EE235 4/9/07

  2. Introduction • Nanowire Lasers • Applications • Potential solution for a laser integrated on silicon • Nanowires act as a natural laser cavity • Nanowire facets act as mirrors • Nanowire itself guides light • This makes a nanowire a natural Fabry-Perot Cavity

  3. Fabrication Process • Deposit Poly(9,9-dioctylfluorene) (PFO) on glass substrate • Place against porous alumina membrane • Anneal for 2 hrs at 250 C, where polymer melts into holes in membrane • Dissolve membrane in NaOH • Resulting nanowires are generally between 250 and 350 nm in diameter and on average 6 µm in length • Nanowires have a PL peak at ~460 nm, which is similar to the bulk PL.

  4. Material Characterization

  5. Waveguiding Scale bar is 5 µm Calculations show that ~85% of fundamental mode should be confined

  6. Cavity Characteristics

  7. Lasing Characteristics

  8. Questions?

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