نتایج جستجو برای: optical constant
تعداد نتایج: 478035 فیلتر نتایج به سال:
The combination of a bulk acoustic wave device and an optical trap allows for studying the buildup time respective forces. In particular, we are interested in it takes to build up radiation force streaming. For that, measure trajectory spherical particle field over time. shape is determined by streaming, both acting on different scales. utilize high temporal resolution ($\mathrm{\ensuremath{\De...
Recently, optical differential phase shift keying (DPSK) has attracted much interest in high-speed optical transmission systems. It features constant intensity and thus is less vulnerable to the fiber nonlinearities. In addition to high-speed data transmission, it is desirable to carry relatively low-speed supervisory information simultaneously to facilitate the system monitoring and network ma...
We have observed the radio source in NGC 3862 (3C264) simultaneously with the EVN and the MERLIN arrays, obtaining detailed images of its radio structure from parsec to sub-kiloparsec scales. 3C264 shows a one-sided jet, with evident variations in its morphological properties with distance. We have analyzed HST optical data of NGC 3862, finding a one-to-one correspondence between radio and opti...
Atomic optical clocks and search for variation of the fine structure constant. Abstract Theories unifying gravity and other interactions suggest the possibility of spatial and temporal variation of physical " constants ". Accuracy achieved for the atomic optical frequency standards (optical clocks) approaches the level when possible time evolution of the fine structure constant α can be studied...
Interferometric gravitational wave detectors operate with high optical power in their arms in order to achieve high shot-noise limited strain sensitivity. A significant limitation to increasing the optical power is the phenomenon of three-mode parametric instabilities, in which the laser field in the arm cavities is scattered into higher-order optical modes by acoustic modes of the cavity mirro...
The design and fabrication of a tellurite glass multimode optical fiber for magneto-optical applications are presented and discussed. The analysis of the polarization shows that an optical beam, linearly polarized at the fiber input, changes to elliptically polarized with an ellipticity of 1∶4.5 after propagating down the fiber. However, the elliptical distribution remains unchanged with or wit...
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