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Proceedings Paper

High-Performance Random-Access Linear Photodiode Array For Spectroscopy Applications
Author(s): Weng -Lyang Wang; Les Bottenberg; Satch Tanaka
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Paper Abstract

A 1024-element random-access linear photodiode array has been developed for emission or absorption spectros-copy applications. This new array is especially useful in very high contrast intensity conditions. Each element of the array is 25 μm x 2500 μm giving each a slit-like geometry with a 100 : 1 aspect ratio suitable for coupling to monochromators or spectro-graphs. Ten address lines are implemented to select an individual photo-site. Therefore, the array has the flexibility of operating in either random-access or sequential-readout modes. In the case of the sequential-readout mode, the array will detect a photo spectrum with a dynamic range in excess of 10,000 : 1. In the random-access mode, the spectrum infomation can be further enhanced by varying the integration times of each pixel. Other array sizes with 512 and 256 photoelements have also been developed. The device structure, operation, and performance will be presented.

Paper Details

Date Published: 7 December 1988
PDF: 11 pages
Proc. SPIE 0972, Infrared Technology XIV, (7 December 1988); doi: 10.1117/12.948289
Show Author Affiliations
Weng -Lyang Wang, EG&G Reticon (United States)
Les Bottenberg, EG&G Reticon (United States)
Satch Tanaka, EG&G Reticon (United States)


Published in SPIE Proceedings Vol. 0972:
Infrared Technology XIV
Irving J. Spiro, Editor(s)

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