In this work, we fabricated dual-band 800 Ã? 2 short-wave infrared (SWIR)\nindium gallium arsenide (InGaAs) focal-plane arrays (FPAs) using N-InP/i-In0.53Ga0.47As/N-InP\ndouble-heterostructure materials, which are often applied in ocean-color remote sensing.\nUsing narrow-band interference-filter integration, our detector-adopted planner structure produced\ntwo detection channels with center wavelengths of 1.24 and 1.64 microm, and a full-width half-maximum\n(FWHM) of 0.02 microm for both channels. The photoelectric characteristics of the spectral response,\nmodulation transfer function (MTF), and detectability of the detector were further analyzed. Our FPAs\nshowed good MTF uniformity with pixel operability as high as 100% for each 800 Ã? 1 linear array.\nPeak detectivity reached 4.39 Ã? 1012 and 5.82 Ã? 1012 cm.Hz1/2/W at 278 K, respectively, and response\nnonuniformity was ideal at 2.48% and 2.61%, respectively. As a final step, dual-band infrared detection\nimaging was successfully carried out in push-broom mode.
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