EE 420 - Optical Fiber Communications Lab
... has a limited, but very practical range of applicability. Determination of the fiber misalignment loss should be straight forward to do experimentally. However, there are two difficulties. First, two fibers with relatively small cores (i.e. 2a 50 m ) have to be well-aligned, which needs patience ...
... has a limited, but very practical range of applicability. Determination of the fiber misalignment loss should be straight forward to do experimentally. However, there are two difficulties. First, two fibers with relatively small cores (i.e. 2a 50 m ) have to be well-aligned, which needs patience ...
Four-wave mixing with matter waves
... observed conversion ef®ciencies of only 6%. This difference suggests the in¯uence of some uncontrolled experimental conditions, such as laser beam inhomogeneities, or non-zero average velocity of the released condensate. By comparison, the calculation of Fig. 2a gives an ef®ciency of 10%, albeit for ...
... observed conversion ef®ciencies of only 6%. This difference suggests the in¯uence of some uncontrolled experimental conditions, such as laser beam inhomogeneities, or non-zero average velocity of the released condensate. By comparison, the calculation of Fig. 2a gives an ef®ciency of 10%, albeit for ...
تحليل التوليد الفائق المســـــــتمر في الياف البلورة
... presence SRS, SS and higher order dispersion. This leads to soliton fission to fundamental solitons and this leads to increase the width of the resulting spectrum Fig.(4b) shows the results by neglecting the higher order dispersion. Here we note that context of the spectral shape being destroyed and ...
... presence SRS, SS and higher order dispersion. This leads to soliton fission to fundamental solitons and this leads to increase the width of the resulting spectrum Fig.(4b) shows the results by neglecting the higher order dispersion. Here we note that context of the spectral shape being destroyed and ...
Counterfactual Statements and Weak Measurements: an
... |gi and |ei. Rather than the rotation of π radians corresponding to a full C 2 − N OT operation, a small positive rotation angle can be applied. In Ref. [14], we present an explicit Hamiltonian providing this rotation. The logic of the experiment is now, that if the two ions are both in the state |g ...
... |gi and |ei. Rather than the rotation of π radians corresponding to a full C 2 − N OT operation, a small positive rotation angle can be applied. In Ref. [14], we present an explicit Hamiltonian providing this rotation. The logic of the experiment is now, that if the two ions are both in the state |g ...
2. Spectral Stray Light
... measurements (Damm 2007) are illustrated in fig. 3. It can be seen that the spectral stray light can span 60 or more channels. The gap around channel 0 is due to the fact that only the out-of-band channels are shown (Damm 2007). While this method quantifies the stray light over “long ranges”, it is ...
... measurements (Damm 2007) are illustrated in fig. 3. It can be seen that the spectral stray light can span 60 or more channels. The gap around channel 0 is due to the fact that only the out-of-band channels are shown (Damm 2007). While this method quantifies the stray light over “long ranges”, it is ...
An Optical Mask for Atomic Interferometry Experiments
... beamsplitter. As mentioned above, atoms can be diffracted off a grating. One very early example of this is the diffraction of helium atoms from a LiF crystal surface, first done by Estermann and Stern in 1930. The periodicity of the crystal lattice lets it act as a phase grating for the atoms. Moder ...
... beamsplitter. As mentioned above, atoms can be diffracted off a grating. One very early example of this is the diffraction of helium atoms from a LiF crystal surface, first done by Estermann and Stern in 1930. The periodicity of the crystal lattice lets it act as a phase grating for the atoms. Moder ...
Coherent population trapping resonances at lower atomic
... The essence of the phenomenon of coherent population trapping (CPT) consists in the fact that a multilevel quantum system subjected to decay processes is coherently driven into a superposition state immune from the further excitation, in which the system population is trapped. CPT is the basis of a ...
... The essence of the phenomenon of coherent population trapping (CPT) consists in the fact that a multilevel quantum system subjected to decay processes is coherently driven into a superposition state immune from the further excitation, in which the system population is trapped. CPT is the basis of a ...
Aalborg Universitet Transfer function and near-field detection of evanescent waves
... from below. For an incoming plane wave with a specific value of k储 ⫽ |k储|, we determined the amount of power coupled to the fundamental fiber mode. Varying the value of k储, we obtained the (spatial-) frequency-dependent transmission, which is again related to the squared magnitudes of the ACF compon ...
... from below. For an incoming plane wave with a specific value of k储 ⫽ |k储|, we determined the amount of power coupled to the fundamental fiber mode. Varying the value of k储, we obtained the (spatial-) frequency-dependent transmission, which is again related to the squared magnitudes of the ACF compon ...
Raman Scattering in Solids
... effect in a metal is very weak in comparison to scattering from most of the insulating materials. Hence, high or ultra-high vacuum is desirable. For low temperature studies, the sample is cooled using either a liquid helium cryostat or a closed-cycle refrigeration system. The sample is illuminated b ...
... effect in a metal is very weak in comparison to scattering from most of the insulating materials. Hence, high or ultra-high vacuum is desirable. For low temperature studies, the sample is cooled using either a liquid helium cryostat or a closed-cycle refrigeration system. The sample is illuminated b ...
Nonlinear optical responses and gap
... adiabatic in the sense that it is switched on after soliton defects have formed on all the N dielectric layers. To allow for the interaction among solitons, we need to separate their centres of mass from their spatial coordinates on layers. In fact, this amounts to introduce a pinning-center in the ...
... adiabatic in the sense that it is switched on after soliton defects have formed on all the N dielectric layers. To allow for the interaction among solitons, we need to separate their centres of mass from their spatial coordinates on layers. In fact, this amounts to introduce a pinning-center in the ...
States of an Ensemble of Two-Level Atoms with Reduced Quantum
... numbers 2S0 thus obtained, we have also directly measured the cavity mode frequency shift ! / Sz , finding agreement to within 2(4)% [25]. S2z is obtained from transmission measurements that always remain in the linear regime, with 2jSz jd!=dN 0:01. The probe laser is frequency-stabilized to a ...
... numbers 2S0 thus obtained, we have also directly measured the cavity mode frequency shift ! / Sz , finding agreement to within 2(4)% [25]. S2z is obtained from transmission measurements that always remain in the linear regime, with 2jSz jd!=dN 0:01. The probe laser is frequency-stabilized to a ...
Ultrafast Nonlinear Optical Signals Viewed from the Molecule`s
... square of transition amplitudes and are clearly separated from the parametric background. Purely dissipative signals that can be measured using a collinear beam geometry and manipulated by pulse shaping techniques are proposed. The approach is demonstrated by applications to the stimulated Raman and ...
... square of transition amplitudes and are clearly separated from the parametric background. Purely dissipative signals that can be measured using a collinear beam geometry and manipulated by pulse shaping techniques are proposed. The approach is demonstrated by applications to the stimulated Raman and ...
Materialanalytik Praktikum Ellipsometry B508
... Figure 2: Reflectance R vs. incidence angle ρ for an air-GaAs interface. The reflectance R differs for the two polarizations. The angle characterized by the minimum in reflectance for Rp is called the “Brewster Angle”. 2.3. Principle of Ellipsometry In Fig. 3 the basic principle of ellipsometry is i ...
... Figure 2: Reflectance R vs. incidence angle ρ for an air-GaAs interface. The reflectance R differs for the two polarizations. The angle characterized by the minimum in reflectance for Rp is called the “Brewster Angle”. 2.3. Principle of Ellipsometry In Fig. 3 the basic principle of ellipsometry is i ...
optical trap
... without damaging them. Optical tweezers prove very useful for this because, not only can they manipulate small particles very precisely, but, using infrared light, they can do so without causing damage. The development of the single beam optical trap was an important advance in optical tweezers, bec ...
... without damaging them. Optical tweezers prove very useful for this because, not only can they manipulate small particles very precisely, but, using infrared light, they can do so without causing damage. The development of the single beam optical trap was an important advance in optical tweezers, bec ...
Depth of field and improved resolution of slit-scan flow systems
... limitations are missing. Often, resolution values are estimated under the assumption of ideal Gaussian beam propagation. These estimates suffer from a discrepancy to practical implementation. Here, some of these effects in slit-scan optics will be discussed from a more theoretical point of view. In ...
... limitations are missing. Often, resolution values are estimated under the assumption of ideal Gaussian beam propagation. These estimates suffer from a discrepancy to practical implementation. Here, some of these effects in slit-scan optics will be discussed from a more theoretical point of view. In ...