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We have demonstrated a QWIP photodetector embedded in metallic microcavity array with highly sub-wavelength pixel separation. This geometry allows for a drastic reduction of the effective area of the device and enhances light in-coupling with a lower number of absorbing quantum wells.
Nanoparticles with diameter and refractive index similar to viruses were detected by using a local evanescent array coupled biosensor with an integrated photodetector array on a CMOS chip.
The design and fabrication of a Snap-shot mode high speed ROIC for GaAs/AlGaAs QWIP FPAs was reported. The snap-shot CTIA input stage with pixel-level skimming increased the readout speed and integrated voltage swing. The column-shared CDS circuits improved the noise and speed performance under low power dissipation. The multiplexed sampling voltage is buffered to output with high speed output buffer...
Patterned nanoscale organic films including photoresist and bovine serum albumin locally modulate the evanescent field distribution of a SiNx core waveguide and are sensed with an integrated photodetector array on a CMOS chip.
We have designed a double-barrier superlattice infrared photodetector (SLIP) which has a superlattice (SL) sandwiched between the thin and thick barriers. Photoelectrons can bounce back and forth between the two barriers and inject through the thin barrier to enhance the photocurrent. However, the supply of electrons is limited by the thick barrier and thus we have to fabricate the emitter contact...
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