Results 171 to 180 of about 9,053 (222)

An Improvement in Fabry–Perot Spectrometry

Applied Optics, 1967
In Fabry-Perot interferometry a large fraction of light can be reflected by the etalon; thus, it is lost for spectroscopic purposes. The present article shows the possibility of recovering this light, collecting it by means of reflectors and sending it back to the etalon under a different angle. Some devices are examined and some experimental proofs of
U, Ascoli-Bartoli, G, Benedetti-Michelangeli, F, Demarco   +2 more
openaire   +2 more sources

Astrophysics with an infrared Fabry-Perot

Infrared Physics, 1979
Abstract We discuss the motion of gas in dark interstellar clouds, relevant to the early life of stars. This motion can be studied with a Fabry-Perot interferometer for infrared emission lines. We describe a cryogenic spectrometer of that type, with a resolution of 105, dedicated to the [Ne II] line at 12.8 μm.
Andriesse, C.D., van der Wal, P.B., de Vries, J.S.   +2 more
openaire   +2 more sources

The Atomic Fabry-Perot Interferometer

2002
Since the realisation in 1995 of an atomic Bose-Einstein condensate (BEC), atom optics has began to take advantage of the remarkable properties of such a coherent matter wave: indeed, the large number of atoms sharing the same quantum state can be described as a classical C-number matter wave.
Carusotto I, LA ROCCA, Giuseppe Carlo
openaire   +2 more sources

A Polarization Fabry-Perot Duochromator

Applied Optics, 1970
A two-channel Fabry-Perot interferometer for the measurement of very small displacements of spectral lines has been constructed. Advantage is taken both of the superior throughput and resolution of the Fabry-Perot. The two-channel operation is produced by the use of two concentric polarizers and a rotating analyzer.
J G, Hirschberg, W I, Fried
openaire   +2 more sources

Compressible Fabry-Perot refractometer

Applied Optics, 1987
The use of a long, thermally stable Fabry-Perot etalon as a refractometer is considered in detail in this study of the refractive index of air. The etalon consists of two flat plates of fused silica 60 mm in diameter, with a cylindrical spacer made of Zerodur (a polycrystalline glass ceramic of extremely low thermal expansion) 200 mm long.
M, Andersson, L, Eliasson, L R, Pendrill
openaire   +2 more sources

Electrooptical Fabry-Perot Spectroscopy

Applied Optics, 1973
A new method is described that uses an elegtronic imaging tube to record and explore Fabry-Perot fringes. The light intensity distribution of an interference pattern and the Doppler effect of a line can be observed with an exploration time of the order of 1O(-5) sec.
J M, Gagné, J, Bures, N, Laberge
openaire   +3 more sources

Jamin Fabry–Perot interferometer

Optics Letters, 2003
A novel type of interferometer was designed and tested experimentally. It combines the advantages of the spatial path separation used in the two-wave polarized Jamin interferometer and the high sensitivity that characterizes the multiwave Fabry-Perot interferometer. Furthermore, when it is sandwiched between crossed polarizers it shows a sensitivity to
Dominique, Chauvat, Christophe, Bonnet, Alain, Durand, Marc, Vallet, Albert, Le Floch   +4 more
openaire   +2 more sources

Intensity transmitted by a Fabry-Perot etalon with another internal Fabry-Perot interferometer

Applied Optics, 1981
The intensity transmitted by a device made up of a F.P. etalon that contains another internal tunable F.P. has been studied. The theoretical predictions about the wavelengths of the intensity transmission maxima of the device are derived as functions of the optical path length of the internal F.P. An experimental check of the theoretical predictions is
E, Bernabeu, J C, Amaré, J M, Alvarez, F, Moreno   +3 more
openaire   +2 more sources

The Fabry–Perot

1992
Abstract This chapter examines a particular case of multiple-beam interference: where light is bounced repeatedly between two highly reflecting mirrors. It is assumed that the reader has already encountered interference ‘by division of amplitude’ in its two-beam case, as happens when light is reflected from opposite faces of a slab or ...
openaire   +1 more source

Fabry-Perot Fringe Enhancement

Applied Optics, 1967
The experimental results are presented to show that it is possible to use a Fabry-Perot interferometer to discriminate multifrequency, uniphase gas laser modulation at frequencies less than the laser's doppler bandwidth. This is done by selecting the F.P. mirror spacing to match the laser cavity. Thus, each F.P. mode discriminates the modulation on its
openaire   +2 more sources