Chris Chase EE235 4/9/07
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Chris Chase EE235 4/9/07
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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. - PowerPoint PPT Presentation
Transcript of Chris Chase EE235 4/9/07
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
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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
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Cavity Characteristics
Chris Chase, EE235 7
Lasing Characteristics
Chris Chase, EE235 8
Questions?
