Chris Chase EE235 4/9/07. Chris Chase, EE235 2 Introduction Nanowire Lasers Applications Potential solution for a laser integrated on silicon Nanowires.

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Presentation transcript:

Chris Chase EE235 4/9/07

Chris Chase, EE235 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

Chris Chase, EE235 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.

Chris Chase, EE235 4 Material Characterization

Chris Chase, EE235 5 Waveguiding Scale bar is 5 µm Calculations show that ~85% of fundamental mode should be confined

Chris Chase, EE235 6 Cavity Characteristics

Chris Chase, EE235 7 Lasing Characteristics

Chris Chase, EE235 8 Questions?