Journal ArticleDOI
Static multislit spectrometry and its application to the panoramic display of infrared spectra.
TLDR
The rate at which information about infrared spectra can be obtained in this manner is illustrated by a photograph of the CO2 spectrum which includes both the 14μ and 15μ absorption bands, and which was obtained in 100 milliseconds.Abstract:
The static multislit principle is examined, and some ancillary number theoretical concepts are exposed briefly A discussion is also presented of the aberrations which limit the available field area in various spectroscopic systemsA description is given of an apparatus embodying the static multislit principle and designed to give a cathode-ray panoramic display of short segments of the infrared spectrum in the NaCl and KBr prism rangeThe rate at which information about infrared spectra can be obtained in this manner is illustrated by a photograph of the CO2 spectrum which includes both the 14μ and 15μ absorption bands, and which was obtained in 100 millisecondsread more
Citations
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Complementary series
TL;DR: These series, which were originally conceived in connection with the optical problem of multislit spectrometry, also have possible applications in communication engineering, for when the two kinds of elements of these series are taken to be +1 and -1, it follows immediately from their definition that the sum of their two respective autocorrelation series is zero everywhere, except for the center term.
Journal ArticleDOI
Peak-to-mean power control in OFDM, Golay complementary sequences and Reed-Muller codes
James A. Davis,Jonathan Jedwab +1 more
TL;DR: A previously unrecognized connection between Golay complementary sequences and second-order Reed-Muller codes over alphabets Z/sub 2/h is found to give an efficient decoding algorithm involving multiple fast Hadamard transforms.
Journal ArticleDOI
Complementary sets of sequences
Chin-Chong Tseng,Chun-Hung Liu +1 more
TL;DR: It is shown that matrices consisting of mutually orthogonal complementary sets of sequences can be used as operators so as to per form transformations and inverse transformations on a one- or two-dimensional array of real time or spatial functions.
Journal ArticleDOI
Generalised Reed-Muller codes and power control in OFDM modulation
TL;DR: A powerful theory linking Golay complementary sets of polyphase sequences and Reed-Muller codes is developed and shows that any second-order coset of a q-ary generalization of the first order Reed-muller code can be partitioned into Golay additive sets whose size depends only on a single parameter that is easily computed from a graph associated with the coset.
Journal ArticleDOI
Liquid Crystal Metamaterial Absorber Spatial Light Modulator for THz Applications
TL;DR: In this paper, a terahertz spatial light modulator implemented with metamaterial absorbers (MMAs) functionalized with isothiocyanate-based liquid crystals (LCs) is experimentally demonstrated.
References
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Journal ArticleDOI
Multi-Slit Spectrometry*
TL;DR: The factors which limit the recording speed and the resolution of infra-red spectra are reviewed, and methods offering increased overall photometric efficiency are examined.
Journal ArticleDOI
A Rapid Scanning Spectrometer for Oscillographic Presentation in the Near Infra-Red*
TL;DR: In this paper, a rapid scanning spectrometer for oscillographic presentation has been built for use in the photo-conductive infra-red region, which is designed to present spectra from 0.36μ to better than 5μ using a PbTe cell.
Journal ArticleDOI
Infra-Red Recording with the Cathode Ray Oscilloscope
J King,R B Temple,H. W. Thompson +2 more
TL;DR: In this paper, the authors described a new instrument in which an infra-red spectrum is traced upon a cathode ray screen having a long persistence of glow, so that the spectrum can be measured rapidly, and, effectively, is seen over a definite range continuously.
Journal ArticleDOI
An infra-red spectroscope with cathode-ray presentation
E F Daly,G B B M Sutherland +1 more
TL;DR: In this paper, an instrument developed for the visual presentation of infra-red spectra in a cathode-ray screen is described, and the radiation detector employed is a high-speed bolometer made by the Bell Telephone Laboratories having a time constant of less than 0.01 second.