3D–2D–3D photonic crystal heterostructures fabricated by direct
... structure. Such samples can obviously no longer be easily characterized by electron microscopy, but they can be characterized by optical spectroscopy. It is clear that for incidence of light normal to the 2D plane, the structure is just a Fabry–Perot cavity. The corresponding spectra can then be dir ...
... structure. Such samples can obviously no longer be easily characterized by electron microscopy, but they can be characterized by optical spectroscopy. It is clear that for incidence of light normal to the 2D plane, the structure is just a Fabry–Perot cavity. The corresponding spectra can then be dir ...
Femtosecond laser pulse filamentation versus optical
... spectrum, as well as conical emission due to self-phase modulation and self-steepening [14, 15]. The spectrum can extend from the near infrared to the visible and is called the supercontinuum (SC) [16] or white light laser [17]. Due to its wide range of possible applications [18], the phenomenon has ...
... spectrum, as well as conical emission due to self-phase modulation and self-steepening [14, 15]. The spectrum can extend from the near infrared to the visible and is called the supercontinuum (SC) [16] or white light laser [17]. Due to its wide range of possible applications [18], the phenomenon has ...
An introduction to medical imaging with coherent terahertz
... sources with laser pulses shorter than 100 fs is a few GHz to 3 THz. 3.3. Imaging considerations, measurement time and pulse signal-to-noise ratio To exploit the spatial and spectral information available, large amounts of data must be collected in the spatial and temporal domains. The volume of dat ...
... sources with laser pulses shorter than 100 fs is a few GHz to 3 THz. 3.3. Imaging considerations, measurement time and pulse signal-to-noise ratio To exploit the spatial and spectral information available, large amounts of data must be collected in the spatial and temporal domains. The volume of dat ...
Laser Medicine and Medical Imaging – J. G. Fujimoto
... absorber. Center: Digitally demodulated OCT image of the phantom used for this study. Right: Spectrum of the OCT echo of the cover glass surface at the points indicated with A and B and one intermediate point. The arrow indicates wavelength of the water absorption band. The full interference signal ...
... absorber. Center: Digitally demodulated OCT image of the phantom used for this study. Right: Spectrum of the OCT echo of the cover glass surface at the points indicated with A and B and one intermediate point. The arrow indicates wavelength of the water absorption band. The full interference signal ...
Principles and techniques of digital holographic microscopy
... and neural networks [9]. Instead of photographic plates or films, real-time holography is possible with photorefractives and other nonlinear optics materials. In fact, we now understand much of nonlinear optics as generalizations of the holography principle, including phase conjugation, four-wave mi ...
... and neural networks [9]. Instead of photographic plates or films, real-time holography is possible with photorefractives and other nonlinear optics materials. In fact, we now understand much of nonlinear optics as generalizations of the holography principle, including phase conjugation, four-wave mi ...
Optical Fourier techniques for medical image processing and phase
... bR is shown in Fig. 5a. In its stable B state, upon the absorption of a photon within the broad absorption with a maximum at 570 nm, the bR molecule goes through a photochemical cycle of several short lived intermediate states J, K, L and then to the long-lived M state with an absorption peak at 412 ...
... bR is shown in Fig. 5a. In its stable B state, upon the absorption of a photon within the broad absorption with a maximum at 570 nm, the bR molecule goes through a photochemical cycle of several short lived intermediate states J, K, L and then to the long-lived M state with an absorption peak at 412 ...
Methods and Applications of Optical Holography
... employing binary mask to record two-dimensional [43, 44] and three-dimensional objects [45, 46] viewed in coherent light. The CGH is based on numerical computation of virtual wavefront therefore requires substantial computing resources. For improved security the Electron Beam Lithography is used for ...
... employing binary mask to record two-dimensional [43, 44] and three-dimensional objects [45, 46] viewed in coherent light. The CGH is based on numerical computation of virtual wavefront therefore requires substantial computing resources. For improved security the Electron Beam Lithography is used for ...
- Phasics
... within the plasma and not an average response to an interdependent ensemble of speckles that have various intensities. Thus it allows the theoretical models to be validated and the simulation codes to be assessed on a level of reduced complexity. Also, reducing the needed size of the simulation boxe ...
... within the plasma and not an average response to an interdependent ensemble of speckles that have various intensities. Thus it allows the theoretical models to be validated and the simulation codes to be assessed on a level of reduced complexity. Also, reducing the needed size of the simulation boxe ...
Effect of input pulse chirp on nonlinear energy deposition and
... increasing either Ein or wFWHM is due to enhancement of multiphoton and/or plasma absorption. This happens because localization of light imposed by the lens and further enhanced by self-focusing on the transverse plane is more efficient than all other processes that yield decrease of intensity, such ...
... increasing either Ein or wFWHM is due to enhancement of multiphoton and/or plasma absorption. This happens because localization of light imposed by the lens and further enhanced by self-focusing on the transverse plane is more efficient than all other processes that yield decrease of intensity, such ...
Multichip module with planar-integrated free-space
... attractive because they have low latency, are strictly nonblocking, and do not require sophisticated control and configuration algorithms. Their relevance for digital computing lies in the fact that any digital algorithm may be executed in parallel by use of appropriate sets of Boolean sum-of-produc ...
... attractive because they have low latency, are strictly nonblocking, and do not require sophisticated control and configuration algorithms. Their relevance for digital computing lies in the fact that any digital algorithm may be executed in parallel by use of appropriate sets of Boolean sum-of-produc ...
An ultrafast reconfigurable nanophotonic switch using
... ms, resulting in a total optimization time of 30 s. A further optimization cycle was then performed to take advantage to the improved signal to noise ratio in the optimized spot, after which no significant improvement was obtained for further cycles with a stable configuration. By positioning the fo ...
... ms, resulting in a total optimization time of 30 s. A further optimization cycle was then performed to take advantage to the improved signal to noise ratio in the optimized spot, after which no significant improvement was obtained for further cycles with a stable configuration. By positioning the fo ...
Shaping the focal intensity distribution using spatial coherence
... can in turn be generated by an incoherent source whose aperture is given by the Fourier transform of the correlation function. One such example is using an annular incoherent source to produce a J0-correlated field at the lens. The detailed three-dimensional structure of the light field in the focal ...
... can in turn be generated by an incoherent source whose aperture is given by the Fourier transform of the correlation function. One such example is using an annular incoherent source to produce a J0-correlated field at the lens. The detailed three-dimensional structure of the light field in the focal ...
