We study plasmonic nanoantennas for molecular sensing in the mid-infrared made of heavily doped germanium, epitaxially grown with a bottom-up doping process and featuring free carrier density in excess of 1020 cm-3. The dielectric function of the 250 nm thick germanium film is determined, and bow-tie antennas are designed, fabricated, and embedded in a polymer. By using a near-field photoexpansion mapping technique at λ = 5.8 μm, we demonstrate the existence in the antenna gap of an electromagnetic energy density hotspot of diameter below 100 nm and confinement volume 105 times smaller than λ3
We explore the nonlinear optical properties of plasmonic semiconductor antennas resonant in the mid ...
Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium wit...
Plasmonics provides an elegant way to effectively couple optical radiation to single sub-wavelength ...
We study plasmonic nanoantennas for molecular sensing in the mid-infrared made of heavily doped germ...
Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium wit...
International audienceIn this work, the growth and the fabrication of heavily doped germanium plasmo...
We investigate the mid-infrared response of heavily doped germanium films and periodic arrays of nan...
We investigate the mid-infrared response of heavily doped germanium films and periodic arrays of nan...
Heavily-doped semiconductor films are very promising to produce mid-infrared plasmonic devices for a...
CMOS-compatible, heavily-doped semiconductor films are very promising for applications in mid-infrar...
We explore the nonlinear optical properties of plasmonic semiconductor antennas resonant in the mid ...
Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium wit...
Plasmonics provides an elegant way to effectively couple optical radiation to single sub-wavelength ...
We study plasmonic nanoantennas for molecular sensing in the mid-infrared made of heavily doped germ...
Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium wit...
International audienceIn this work, the growth and the fabrication of heavily doped germanium plasmo...
We investigate the mid-infrared response of heavily doped germanium films and periodic arrays of nan...
We investigate the mid-infrared response of heavily doped germanium films and periodic arrays of nan...
Heavily-doped semiconductor films are very promising to produce mid-infrared plasmonic devices for a...
CMOS-compatible, heavily-doped semiconductor films are very promising for applications in mid-infrar...
We explore the nonlinear optical properties of plasmonic semiconductor antennas resonant in the mid ...
Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium wit...
Plasmonics provides an elegant way to effectively couple optical radiation to single sub-wavelength ...