TY - GEN
T1 - Ultrathin high efficiency photodetectors based on near field enhanced optical absorption
AU - Zohar, Moshe
AU - Auslender, Mark
AU - Hava, Shlomo
PY - 2015/5/4
Y1 - 2015/5/4
N2 - Optical absorbers, comprising a thin semiconductor layer put between two transparent ones in close proximity of a subwavelength grating, are considered. These structures with no back mirror only mimic resonant cavity enhanced photodetector, being an order of magnitude thinner. It is argued that properly designed grating can assist the light confinement by near field microcavity resonance rather than by a mirroring. Tolerant designs to attain nearly 100% optical absorption at a predefined wavelength are demonstrated, and the near-field enhancement of the absorption is confirmed.
AB - Optical absorbers, comprising a thin semiconductor layer put between two transparent ones in close proximity of a subwavelength grating, are considered. These structures with no back mirror only mimic resonant cavity enhanced photodetector, being an order of magnitude thinner. It is argued that properly designed grating can assist the light confinement by near field microcavity resonance rather than by a mirroring. Tolerant designs to attain nearly 100% optical absorption at a predefined wavelength are demonstrated, and the near-field enhancement of the absorption is confirmed.
UR - http://www.scopus.com/inward/record.url?scp=84935117661&partnerID=8YFLogxK
U2 - 10.1364/CLEO_AT.2015.JTu5A.70
DO - 10.1364/CLEO_AT.2015.JTu5A.70
M3 - Conference contribution
AN - SCOPUS:84935117661
T3 - CLEO: QELS - Fundamental Science, CLEO_QELS 2015
SP - 1551p
BT - CLEO
PB - Optical Society of America
T2 - CLEO: QELS - Fundamental Science, CLEO_QELS 2015
Y2 - 10 May 2015 through 15 May 2015
ER -