Optofluidic integration of a photonic crystal nanolaser

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We demonstrate a new type of photonic crystal nanolaser incorporated into a microfluidic chip, which is fabricated by multilayer soft lithography. Experimentally, room-temperature continuous-wave lasing operation was achieved by integrating a photonic crystal nanocavity with a microfluidic unit, in which the flow medium both enhances the rate of heat removal and modulates the refractive index contrast. Furthermore, using the proposed system, dynamic modulation of the resonance wavelength and far-field radiation pattern can be achieved by introducing a bottom reflector across which various fluids with different refractive indices are forced to flow. In particular, by maintaining a gap between the reflector and the cavity equal to the emission wavelength, highly efficient unidirectional emission can be obtained. The proposed nanolasers are ideal platforms for high-fidelity biological and chemical detection tools in micro-total-analytical or lab-on-a-chip systems. (C) 2008 Optical Society of America.
Publisher
OPTICAL SOC AMER
Issue Date
2008-04
Language
English
Article Type
Article
Keywords

LASER; MODE; FABRICATION; NANOCAVITY; CIRCUITS; DESIGN; INP

Citation

OPTICS EXPRESS, v.16, no.9, pp.6515 - 6527

ISSN
1094-4087
DOI
10.1364/OE.16.006515
URI
http://hdl.handle.net/10203/20505
Appears in Collection
CBE-Journal Papers(저널논문)PH-Journal Papers(저널논문)
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