Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Light responsive structure
Patent
1991-12-03
1993-07-13
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Heterojunction device
Light responsive structure
257443, 257432, 257466, 359248, 359260, 359263, H01L 2714
Patent
active
052276481
ABSTRACT:
A photodiode array composed of sharply tuned at consecutively different wavelengths are disclosed with the vertical resonance cavity. Semiconductor superlattice distributed Bragg reflectors can be used as the resonance cavity to achieve sharp tuning and monolithic integration, and the wedged distributed Bragg reflector configuration resonance cavity provides a sequential wavelength detection range. A linear array having resolution a fraction of the photodiodes bandwidth and a square-matrix array with a wedged etalon for high resolution, are disclosed. The disclosed photodiode array make a pocket-type wavelength meter feasible and can be used as a substitute for a spectrometer.
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