Optimization of metallic nanoapertures at short-wave infrared wavelengths for self-induced back-action trapping.

摘要: This paper presents simulation results for double nanohole and inverted bowtie nanoapertures optimized to resonate in the short-wave infrared regime (1050 nm 1550 nm). These geometries have shown great promise trapping nanoparticles with applications optical engineering, physics, biology. Using a finite element analysis tool, we found that outline length 100 thick gold film 20 gap dimension having an transmission resonance 1050 wavelengths is 106.5 188.5 nm, respectively. With same size, radii of circles are 72 128 nm. The near-field enhancements two structures almost same, while 20% larger full width at half-maximum than bowtie. Next, by studying effect changing inner corners, difference between 2 6 corner can blue-shift up 45 As result not any structure requires less precise fabrication therefore could potentially higher successful yield during manufacturing process. Lastly, will show experimental confirm enable better performance signal-to-noise ratio nanoaperture wavelength regime.