Mid-infrared doping tunable transmission through subwavelength metal hole arrays on InSb.
Doping-tunable mid-infrared extraordinary transmission is demonstrated from a periodic metal hole array patterned on n-InSb. The polarization-dependent transmission was measured at room temperature and 77 K. In addition, the extraordinary transmission was measured for incident angles from 0 degrees to 35 degrees in 5 degrees steps. A fundamental resonance shift of approximately 123 cm-1 (1.4 microm) is observed by varying the doping from 1 x 10(16) to 2 x 10(18) cm(-3). The calculated transmission resonances were in good agreement with the experimental results. This suggests that InSb semiconductor-based plasmonic structures may be suitable for a variety of tunable mid-infrared device applications.
Passmore
B S
BS
Sandia National Laboratories, Albuquerque, NM 87185, USA. bspassm@sandia.gov
Allen
D G
DG
Vangala
S R
SR
Goodhue
W D
WD
Wasserman
D
D
Shaner
E A
EA
D000965:Antimony / Q000737:chemistry*; D007204:Indium / Q000737:chemistry*; D007259:Infrared Rays; D008027:Light; D008670:Metals / Q000737:chemistry; D016062:Porosity; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
D008670:Metals; D007204:Indium; D000965:Antimony