Zobrazeno 1 - 10
of 148
pro vyhledávání: '"F Brehat"'
Publikováno v:
Journal of Physics D: Applied Physics. 32:227-233
An experimental method for the accurate measurement of the optical birefringence of thick anisotropic crystal plates using optical modulation of the incident light beam is described in detail. The significant advantages in the present experimental me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b1faedf3ba33979b78f8a4dbb457fd2
https://doi.org/10.1088/0022-3727/32/3/008
https://doi.org/10.1088/0022-3727/32/3/008
Publikováno v:
Optical and Quantum Electronics. 29:441-450
The spontaneous and electric field induced phase retardations have been measured as a function of temperature in a KDP crystal using an accurate method. The plots of these retardations versus temperature reveal unexpected undulations. We consider the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9220060e5d08e0c1705658fd47e6bdfe
https://doi.org/10.1023/a:1018547331718
https://doi.org/10.1023/a:1018547331718
Publikováno v:
Journal of Physics D: Applied Physics. 27:1121-1128
A polarimetric technique developed for phase retardation measurements of birefringent crystal plates for any visible wavelength is described. The basic characteristics of the present method are demonstrated by using the Poincare sphere representation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51e4c62c591b70564905d40761aad8f2
https://doi.org/10.1088/0022-3727/27/6/007
https://doi.org/10.1088/0022-3727/27/6/007
Publikováno v:
Journal of Physics: Condensed Matter. 6:2475-2490
The X-ray crystal structure of a mixed crystal of potassium dihydrogen phosphate (KDP) and ammonium dihydrogen phosphate (ADP), K1-X(NH4)XH2PO4 (KADPX) with X=0.89, has been refined in the paraelectric phase at 154, 164, 192 and 295 K, against high-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b082ffd2ce4bc71c62ab7bdf4245a5e
https://doi.org/10.1088/0953-8984/6/13/009
https://doi.org/10.1088/0953-8984/6/13/009
Publikováno v:
Journal of Physics D: Applied Physics. 26:293-301
Expressions which allow calculation of the refractive indices and direction of the refracted rays as functions of the angle of incidence in birefringent crystals, are derived for uniaxial and biaxial non-absorbing crystals. These expressions are give
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43acf237b71bad59e7da122df72c7e61
https://doi.org/10.1088/0022-3727/26/2/018
https://doi.org/10.1088/0022-3727/26/2/018
Publikováno v:
Infrared Physics. 34:67-73
The temperature dependence of the infrared (IR) reflectivity spectra of CsH 2 AsO 4 is studied for the first time, for both polarizations parallel and perpendicular to the ferroelectric c -axis, in the para-and ferroelectric phase, in the frequency r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfdcc4919c831732a903bd546f36ad1b
https://doi.org/10.1016/0020-0891(93)90035-6
https://doi.org/10.1016/0020-0891(93)90035-6
Publikováno v:
Infrared Physics. 33:563-573
Expressions for the calculation of the reflectivity and transmissivity of anisotropic absorbing plane parallel crystal plates, of symmetry as high or higher than orthorhombic, are presented for s-polarization. These relations are derived in two cases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6081c8c53e6b29a9d425ef33ddf0809
https://doi.org/10.1016/0020-0891(92)90073-3
https://doi.org/10.1016/0020-0891(92)90073-3
Publikováno v:
Infrared Physics. 33:307-312
The infrared (IR) reflectivity spectrum of KH 2 PO 4 , polarized along the c axis, has been carefully reinvestigated in the vicinity of the phase transition temperature and in the ferroelectric phase, between 10 and 600 cm −1 . Two new results are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::159aa6aa02b4704b2378318eb6efa83a
https://doi.org/10.1016/0020-0891(92)90027-q
https://doi.org/10.1016/0020-0891(92)90027-q
Publikováno v:
Journal of Physics: Condensed Matter. 3:9489-9501
High-temperature Raman and infrared spectra measurements have been performed on KTiOPO4 single crystals in a temperature range from room temperature to 1000 K. Special attention is paid to the low-frequency Raman spectra which exhibit an anomalously
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed48da8b8c081ac16ad645604fba3444
https://doi.org/10.1088/0953-8984/3/47/021
https://doi.org/10.1088/0953-8984/3/47/021
Publikováno v:
Journal of Physics D: Applied Physics. 24:2055-2066
Expressions for the complex amplitude reflection and transmission coefficients together with those for the reflectivity and transmissivity of a single basal plane and a plane parallel crystal plate, are derived for absorbing crystals belonging to sym
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3a80b767f297287be96216789df5c32
https://doi.org/10.1088/0022-3727/24/11/023
https://doi.org/10.1088/0022-3727/24/11/023