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... observation of vortices had been limited to small arrays (up to 11 vortices), both in liquid He [3] and more recently in rotating gaseous Bose-Einstein condensates (BEC) [4, 5]. We have observed the formation of highly-ordered vortex lattices in a rotating Bose-condensed gas [6]. They were produced ...
... observation of vortices had been limited to small arrays (up to 11 vortices), both in liquid He [3] and more recently in rotating gaseous Bose-Einstein condensates (BEC) [4, 5]. We have observed the formation of highly-ordered vortex lattices in a rotating Bose-condensed gas [6]. They were produced ...
New frontiers in quantum cascade lasers
... This section briefly reviews the design principles of a QCL. The energy diagram of the device at zero bias looks overall like a saw-tooth due to the compositionally graded regions, which consist of a digitally graded alloy of alternating ultrathin semiconductor layers. Under high enough bias such tha ...
... This section briefly reviews the design principles of a QCL. The energy diagram of the device at zero bias looks overall like a saw-tooth due to the compositionally graded regions, which consist of a digitally graded alloy of alternating ultrathin semiconductor layers. Under high enough bias such tha ...
Fourier-domain holography in photorefractive quantum-well films
... FDH does have the drawback, however, of large intensity variation of the Fourier transform across the recording medium,6,13 which results in the loss of either high-frequency or low-frequency components in reconstructed images. To solve this problem, diffusers such as random,13 deterministic,14 and ...
... FDH does have the drawback, however, of large intensity variation of the Fourier transform across the recording medium,6,13 which results in the loss of either high-frequency or low-frequency components in reconstructed images. To solve this problem, diffusers such as random,13 deterministic,14 and ...
INTRODUCTION ...
... and either gain or lose kinetic energy. In this it is conceptually very similar to Raman scattering, but there are significant differences. The major difference is that photons (electromagnetic radiation) interact primarily with the electrons of a sample, while neutrons interact with the nuclei. The ...
... and either gain or lose kinetic energy. In this it is conceptually very similar to Raman scattering, but there are significant differences. The major difference is that photons (electromagnetic radiation) interact primarily with the electrons of a sample, while neutrons interact with the nuclei. The ...
Print this article - Indian Journal of Science and Technology
... As reported by Liu, et al.9, the RI of ZnO composite changes from 1.698 to 1.718 as RH changes between 10 to 95%. When ZnO composite exposed to humid environment, it leads to rapid surface adsorption of water molecules and causes changes in optical properties. The RH value increases linearly with th ...
... As reported by Liu, et al.9, the RI of ZnO composite changes from 1.698 to 1.718 as RH changes between 10 to 95%. When ZnO composite exposed to humid environment, it leads to rapid surface adsorption of water molecules and causes changes in optical properties. The RH value increases linearly with th ...
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... positive or negative topological charge. The question of topological charge is more complicated than it is usually referred to in literature. Short discussion on this matter may be found in [5]. Generally, singular lines may have complicated geometry [6 – 8]. In Fig. 2 versors n(s) are unit vectors ...
... positive or negative topological charge. The question of topological charge is more complicated than it is usually referred to in literature. Short discussion on this matter may be found in [5]. Generally, singular lines may have complicated geometry [6 – 8]. In Fig. 2 versors n(s) are unit vectors ...
Novel applications of Photonic Force Microscopy Giovanni Volpe
... microsystems. In 1993 Ghislain and coworkers devised a new scanning force microscopy using an optically trapped microsphere as a probe. This technique was later called Photonic Force Microscope (PFM). A typical PFM comprises an optical trap that holds a probe a dielectric or metallic particle of mic ...
... microsystems. In 1993 Ghislain and coworkers devised a new scanning force microscopy using an optically trapped microsphere as a probe. This technique was later called Photonic Force Microscope (PFM). A typical PFM comprises an optical trap that holds a probe a dielectric or metallic particle of mic ...
Quantum Wavepacket Dynamics in Molecular and Trapped Ion Systems Dong Wang
... in the same electronic states, such as the fluorescence-detected wavepacket interferometry experiment in I2 by Scherer et al. [21], the photodissociation experiment in Cs2 by Girard et al. [22] and photodissociation experiment in I2 by Stapelfeldt and co-workers [23,24]. In these cases the wavepacke ...
... in the same electronic states, such as the fluorescence-detected wavepacket interferometry experiment in I2 by Scherer et al. [21], the photodissociation experiment in Cs2 by Girard et al. [22] and photodissociation experiment in I2 by Stapelfeldt and co-workers [23,24]. In these cases the wavepacke ...
Multistep Parametric Processes in Nonlinear Optics
... Importantly, the effective (or induced) cubic nonlinearity resulting from a cascaded SHG process in a quadratic medium can be of the several orders of magnitude higher than that usually measured in centrosymmetric Kerr-like nonlinear media, and it is practically instantaneous. The simplest type of t ...
... Importantly, the effective (or induced) cubic nonlinearity resulting from a cascaded SHG process in a quadratic medium can be of the several orders of magnitude higher than that usually measured in centrosymmetric Kerr-like nonlinear media, and it is practically instantaneous. The simplest type of t ...
Experiments and theory in cold and ultracold collisions
... long collision duration leaves plenty of time for the two interacting partners to absorb energy from an external radiation field or emit energy by spontaneous or stimulated processes. To the three earlier questions motivating studies of cold collisions may now be added a fourth relevant to the ultra ...
... long collision duration leaves plenty of time for the two interacting partners to absorb energy from an external radiation field or emit energy by spontaneous or stimulated processes. To the three earlier questions motivating studies of cold collisions may now be added a fourth relevant to the ultra ...