论文信息 - Germanium nanoantennas for plasmon-enhanced third harmonic generation in the mid infrared

Germanium nanoantennas for plasmon-enhanced third harmonic generation in the mid infrared

Recent advances in semiconductor film deposition allow for the growth of heavily-doped germanium with effective plasma frequencies above 60 THz, corresponding to wavelengths below 5 μm. This technology paves the way for mid-infrared nanoplasmonics with application in integrated telecommunication systems and enhanced molecular sensing in the so-called vibrational fingerprint spectral region [1].

[1] Douglas J. Paul,et al. Tunability of the dielectric function of heavily doped germanium thin films for mid-infrared plasmonics , 2016 .

[2] P. Biagioni,et al. Tunability and Losses of Mid-infrared Plasmonics in Heavily Doped Germanium Thin Films , 2016, 1601.05321.

[3] Eugenio Calandrini,et al. Midinfrared Plasmon-Enhanced Spectroscopy with Germanium Antennas on Silicon Substrates. , 2015, Nano letters.

[4] Ulrich Hohenester,et al. Tailoring spatiotemporal light confinement in single plasmonic nanoantennas. , 2012, Nano letters.

[5] Richard A. Soref,et al. The third-order nonlinear optical coefficients of Si, Ge, and Si1−xGex in the midwave and longwave infrared , 2011 .