population inversion - Széchenyi István Egyetem
... layers are brought in contact, the positive and negative charge carriers near the junction can recombine photons can be emitted potential barrier builds no recombination ...
... layers are brought in contact, the positive and negative charge carriers near the junction can recombine photons can be emitted potential barrier builds no recombination ...
Slow Waves
... When signal and pump beams of slightly different wavelength interact in a saturable absorber, the ground state of the material oscillates coherently at the beat frequency of the two beams. Unlike EIT, this is highly insensitive to dephasing. The oscillations produce strong dispersion that lead ...
... When signal and pump beams of slightly different wavelength interact in a saturable absorber, the ground state of the material oscillates coherently at the beat frequency of the two beams. Unlike EIT, this is highly insensitive to dephasing. The oscillations produce strong dispersion that lead ...
Advances in laser cooling of thulium-doped glass
... whereas the 3 H 5 → 3 F 4 transition is strongly nonradiative. This nonradiative decay can cause heating that would overwhelm the optical cooling effect. Fortunately, the branching ratio for the 3 F 4 → 3 H 5 transition is 0.03,25 which indicates that the population of the nonradiative branch should ...
... whereas the 3 H 5 → 3 F 4 transition is strongly nonradiative. This nonradiative decay can cause heating that would overwhelm the optical cooling effect. Fortunately, the branching ratio for the 3 F 4 → 3 H 5 transition is 0.03,25 which indicates that the population of the nonradiative branch should ...
Relativistic corrections in displacement measuring
... is at least eight orders of magnitude smaller than the leading velocity term even at relatively large stage velocities of a few meters per second. However, ignoring this term can introduce significant errors in certain situations discussed below. Essentially, neglecting the second-order velocity ter ...
... is at least eight orders of magnitude smaller than the leading velocity term even at relatively large stage velocities of a few meters per second. However, ignoring this term can introduce significant errors in certain situations discussed below. Essentially, neglecting the second-order velocity ter ...
Mach Zehnder Interferometer and its Applications
... variations such as temperature, refractive index, strain etc. while reference arm is kept isolated from variations. Combined output at the MZI output port has the interference component according to the optical phase difference between two arms. The change induced in the sensing arm by any of the me ...
... variations such as temperature, refractive index, strain etc. while reference arm is kept isolated from variations. Combined output at the MZI output port has the interference component according to the optical phase difference between two arms. The change induced in the sensing arm by any of the me ...
Waveguide Dispersion
... Dispersion flattened fiber example. The material dispersion coefficient (Dm) for the core material and waveguide dispersion coefficient (Dw) for the doubly clad fiber result in a flattened small chromatic dispersion between l1 and l2. ...
... Dispersion flattened fiber example. The material dispersion coefficient (Dm) for the core material and waveguide dispersion coefficient (Dw) for the doubly clad fiber result in a flattened small chromatic dispersion between l1 and l2. ...
Scattering and Polarization Properties of the Scarab Beetle Cyphochilus insulanus cuticle
... of adopting the characteristics of larger ensembles. Optical crowding occurs when scattering zones come too close to each other, causing neighbour interaction [13]. To do the opposite, defining individual scattering centres in an amorphous network, is not possible [15]. Burresi et al. [15] have show ...
... of adopting the characteristics of larger ensembles. Optical crowding occurs when scattering zones come too close to each other, causing neighbour interaction [13]. To do the opposite, defining individual scattering centres in an amorphous network, is not possible [15]. Burresi et al. [15] have show ...
Total internal reflection fluorescence spectroscopy and microscopy
... prism which together with the microscope object slide (thickness: 1 mm) formed a hemicylinder (radius: 10 mm) with the sample (illuminated cells) being located in its center. As shown in Figure 2, the light spot on the adjustable mirror was imaged on the sample using a concave focusing mirror (focal ...
... prism which together with the microscope object slide (thickness: 1 mm) formed a hemicylinder (radius: 10 mm) with the sample (illuminated cells) being located in its center. As shown in Figure 2, the light spot on the adjustable mirror was imaged on the sample using a concave focusing mirror (focal ...
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... fundamental light to sample and reference arms containing identical optics. The reference line contained a plate of m-cut quartz, which was used to normalize any spectral and temporal fluctuations of the fundamental source. With the quartz positioned normal to the Ti:Al2O3 beam, the fundamental ligh ...
... fundamental light to sample and reference arms containing identical optics. The reference line contained a plate of m-cut quartz, which was used to normalize any spectral and temporal fluctuations of the fundamental source. With the quartz positioned normal to the Ti:Al2O3 beam, the fundamental ligh ...
