The influence of local heating by nonlinear pulsed laser excitation on the transmission characteristics of a ZnO nanowire waveguide.
We perform a transmission experiment on a ZnO nanowire waveguide to study its transmission characteristics under nonlinear femtosecond-pulse excitation. We find that both the second harmonic and the photoluminescence couple into low-order waveguide modes of the nanowires but with distinctly different efficiencies. We measure the transmission spectrum of a single ZnO nanowire waveguide for near-UV light generated by interband recombination processes. The transmission spectrum allows us to determine the absorption edge of the excited nanowire and to study the temperature profile of the nanowire under femtosecond-pulse excitation.
Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Tobias
T
Voss
Geoffry T
GT
Svacha
Eric
E
Mazur
Sven
S
Müller
Carsten
C
Ronning
D019544:Equipment Failure Analysis / Q000295:instrumentation / Q000379:methods*; D007834:Lasers; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D055096:Optical Devices; D010316:Particle Size; D013696:Temperature; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects*
D015034:Zinc Oxide