High-Performance Random-Access Linear Photodiode Array For Spectroscopy Applications

Weng -Lyang Wang; Les Bottenberg; Satch Tanaka

doi:10.1117/12.948289

7 December 1988 High-Performance Random-Access Linear Photodiode Array For Spectroscopy Applications

Weng -Lyang Wang, Les Bottenberg, Satch Tanaka

Proceedings Volume 0972, Infrared Technology XIV; (1988) https://doi.org/10.1117/12.948289
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

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.

Citation Download Citation

Weng -Lyang Wang, Les Bottenberg, and Satch Tanaka "High-Performance Random-Access Linear Photodiode Array For Spectroscopy Applications", Proc. SPIE 0972, Infrared Technology XIV, (7 December 1988); https://doi.org/10.1117/12.948289

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