Infrared Detectors and Systems

xxvii, 561 hlm, Ilust, 23 c

Responsivity of infrared antenna-coupled microbolometers for air-side and substrate-side illumination

Abstract not availableJavier Alda, Christophe Fumeaux, Michael A. Gritz, David Spencer, Glenn D. Borema

Tunable polarization response of a planar asymmetric-spiral infrared antenna

We present measurements at 10.6 microm that demonstrate electronic tuning of the polarization response of asymmetric-spiral infrared antennas connected to Ni-NiO-Ni diodes. Continuous variation of the bias voltage applied to the diode results in a rotation of the principal axis of the polarization ellipse of the spiral antenna. A 90 degrees tuning range is measured for a bias voltage that varies from -160 to +160 mV .This effect is caused by a small asymmetry of the deposited diode contact or by a variation of the detector capacitance with the applied bias voltage.G. D. Boreman, C. Fumeaux, W. Herrmann, F. K. Kneubühl, and H. Rothuize

Deconvolution method for two-dimensional spatial-response mapping of lithographic infrared antennas

The spatial impulse response of antenna-coupled infrared detectors with dimensions comparable with the wavelength is obtained from a two-dimensional scan of a tightly focused CO(2)-laser beam. The method uses an experimental setup with submicrometer resolution and an iterative deconvolution algorithm. The measured spatial response is compared with numerically computed near-field distributions of a dipole antenna, with good agreement.Javier Alda, Christophe Fumeaux, Iulian Codreanu, Jason A. Schaefer, and Glenn D. Borema

Spatial response of infrared antennas

Abstract not availableC. Fumeaux, Glenn D. Boreman, W. Herrmann, Hugo Rothuizen, Fritz K. Kneubueh