Fast IR spectrograph (0.5–3.0 μm) based on a hybrid 1 × 384 InAs module

A design and parameters of the IR spectrograph based on an MS2004I monochromator-spectrograph and a hybrid microcircuit of a one-dimensional 1 × 384 InAs focal plane array for registration of fast processes (the registration time from 0.2 ms) are presented. The obtained spectral resolution is 0.3 nm/element at a wavelength of 1.7 μm. The wavelength range registered in a fixed position of the diffraction grating at this wavelength is 118 nm.     

Stochastic linear programming with a distortion risk constraint

Coherent distortion risk measures are applied to capture the possible violation of a restriction in linear optimization problems whose parameters are uncertain. Each risk constraint induces an uncertainty set of coefficients, which is proved to be a weighted-mean trimmed region. Thus, given a sample of the coefficients, an uncertainty set is a convex polytope that can be exactly calculated. We construct an efficient geometrical algorithm to solve stochastic linear programs that have a single distortion risk constraint. The algorithm is available as an R-package. The algorithm’s asymptotic behavior is also investigated, when the sample is i.i.d. from a general probability distribution. Finally, we present some computational experience.     

Multielement hybrid IR FPA based on charge-injected devices: Part II. Thermography systems with InAs elements

Results of experimental investigation of thermography systems based on InAs CID elements of line and matrix hybrid modules (a thermal imager and IR microscope) are presented. Owing to a high time stability, in the short-wave IR range, the implemented thermography systems have a temperature resolution of ～(4–8) mK for an effective frame frequency of 1–10 Hz.     

Infrared scanning microscope with high spatial resolution

Technical parameters and possible applications of an infrared scanning microscope with a spatial resolution of up to 3 μm are considered. It is shown that the device works with both array and linear photodetectors. Original PC software was designed to control the scanning process interactively and receive and process images of objects in the infrared range,.     

Multielement hybrid IR FPA based on charge-injected devices: Part I. Principles of signal readout

Problems of using charge-injected devices in hybrid infrared focal plane arrays are considered.     

A Megapixel Matrix Photodetector of the Middle Infrared Range

Journal of Communications Technology and Electronics - Abstract—The characteristics of MWIRs focal plane aeeays made in the form of a hybrid chip based on a planar n+–p-HgCdTe focal...     

Infrared diagnostics of cracks in railway carriage wheels

A method for detecting a through crack in a disc of a railway wheel by an infrared camera or a thermal imager is developed. It is based on registering of the evolution of the temperature distribution on the surface of the wheel disc during its heating. The experimental data considered confirm the possibility of crack detection by the infrared technique.