Aerius Photonics has developed large InGaAs arrays (1K x 1K and greater) with low dark currents for use in night vision applications in the SWIR regime. Aerius will present results of experiments to reduce the dark current density of their InGaAs detector arrays. By varying device designs and passivations, Aerius has achieved a dark current density below 1.0 nA/cm 2 at 280K on small-pixel, detector arrays. Data is shown for both test structures and focal plane arrays. In addition, data from cryogenically cooled InGaAs arrays will be shown for astronomy applications.

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The nucleotide sequences of the internal transcribed spacer (ITS) of nuclear ribosomal DNA in nine diploid species representing six sections of Aegilops were determined by direct sequencing of PCR-amplified DNA fragments. These sequences were aligned with two ITS sequences of additional species from Genbank. Sequence divergences were estimated using Kimura two-parameter model, and the phylogenetic analyses were performed using the maximum parsimony (MP) and the neighbor-joining (NJ) methods with PAUP and PHYLIP, respectively. The sequence divergences between the diploid species varied from 0.5 %I to 4.68 YO. The resulting MP tree and NJ tree showed relatively congruent phylogenetic relationships among these species, except Ae. cuuduta. Particularly, Ae. speltoides was basal within the two trees. The paraphyletic relationships between Ae. speltoides and two species of Sect. Sitopsis, and between Ae. uniuristutu and two species of Sect. Comopyrum were supported strongly. The ITS data suggest that currently recognized sections within Aegilops should be reconsidered.

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