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... interface between microwaves and optical photons (11, 12). The system we present here is another manifestation of mechanics in the quantum regime, but one that differs fundamentally from the suspended resonators mentioned above. In our case, the phonons are not bound to the ...
Magneto-optical Kerr effect (MOKE)
Magneto-optical Kerr effect (MOKE)

... Electric dipole transition is allowed when following conditions are fulfilled: Energy: Ef − Ei = ~ω (absorbed photon energy is difference between energies of the final and initial electron states) Momentum: ~ω/c ≈ 0 (photon has negligible momentum compared to one of the electron. I.e. the momentum o ...
Hyper-Raman scattering and the selection rules for the wave vector
Hyper-Raman scattering and the selection rules for the wave vector

... have a
thesis_draft_4
thesis_draft_4

... from the dissolution process until all air was removed. In order to minimize air incorporation, water was added to suspensions of lactose crystals in saturated lactose solution to produce an under-saturated solution and cause crystal dissolution. In this case the rate constant for lactose dissolutio ...
Gain and Loss Factor for Conical Horns, and Impact of Ground
Gain and Loss Factor for Conical Horns, and Impact of Ground

Estimation of longitudinal resolution in optical coherence
Estimation of longitudinal resolution in optical coherence

Multiplexed Digital Holography incorporating Speckle
Multiplexed Digital Holography incorporating Speckle

Modeling and simulation of surface profile forming process of
Modeling and simulation of surface profile forming process of

... controlled to rotate +10o which stands for ‘on’ and ‘off’ state respectively. The switching time of the mirror (~16μs) is much shorter than the response time of human eye (~150ms), thus modulation of the incident light can generate around 1000 gray levels. DLP can produce more than 16 million colors ...
Customer-Made 3×3 Polymer Optical Fiber Splitter Based on Green
Customer-Made 3×3 Polymer Optical Fiber Splitter Based on Green

... done by taking three strands of POF and heating the middle parts so that it will melted and fused together until it elongated and shrink to a diameter of 1 mm. Successfully fabricated POF splitter are characterized by measuring the output losses, before and after the POF’s end is being smoothed and ...
Spectroscopy – I. Gratings and Prisms
Spectroscopy – I. Gratings and Prisms

... If we could see the whole spectrum (radio to γ–ray), then every order would completely overlap with every other order. In reality, of course, many effects limit what we can see/measure. For example, the atmosphere will eliminate most photons at shorter wavelengths than about 340nm – as well as large ...
POLITECNICO DI MILANO Polo Regionale di Lecco Faculty of
POLITECNICO DI MILANO Polo Regionale di Lecco Faculty of

... as micro drilling (with drilling time commonly in ms) that operate the process in laser ablation of materials. Accordingly, it is inevitable that laser power amount and its duration can play significant effect on material laser beam interaction, and ultimately obtained product quality. The measuring ...
Statistics of the received power for free space optical channels
Statistics of the received power for free space optical channels

Sisay M THESIS - Addis Ababa University Institutional Repository
Sisay M THESIS - Addis Ababa University Institutional Repository

... Diffusion is a process by which matter is transformed from one part of a system to another as a result of random molecular motion [1, 2]. Diffusion also describes the spread of particles through random motion from regions of higher concentration to regions of lower concentration [3, 4]. Diffusion ca ...
leading, peer-reviewed scientific journal
leading, peer-reviewed scientific journal

... With the optical wavelength and absorption coefficient fixed, eighteen different values were used for each of the remaining four variable grain parameters spanning each parameter range. This produced 184 different combinations of grain parameters, representing 184 different grains. We calculated the ...
The Optics of the Mach-Zehnder Interferometer
The Optics of the Mach-Zehnder Interferometer

Full text - Simon Fraser University
Full text - Simon Fraser University

... Single layer molybdenum disulfide (MoS2 ) has attracted significant interest as a semiconducting two-dimensional material. In this work, ultrathin layers of MoS2 were exfoliated on gel and wax substrates. Raman studies of the ultrathin layers of MoS2 were carried out to characterize the thickness. Dur ...
Theory and Practice of Scanning Optical Microscopy - X
Theory and Practice of Scanning Optical Microscopy - X

... approximation, that is the depth of focus is exceedingly large. As the beam propagates the radiation diffracts away from the axis, but power is simultaneously diffracted inwards from the strong outer rings. A beam with intensity distribution given by J ~(v) will propagate without spreading as a resu ...
Elastic stretchable optical fibers
Elastic stretchable optical fibers

... micro-notch in the tiber cladding, which propagates when the fiber is bent to result in a smooth. flat cross-sectional surface as represented in (a). (b) and (c) show the fiber end surface where this process did not work. These deflects allow less light to enter the fiber and guide by total internal ...
Principles and techniques of digital holographic microscopy
Principles and techniques of digital holographic microscopy

... The holography principle was immediately applied to recording and imaging by visible light [4]. But it had to wait for two critical inventions before its full potential was to be realized. One was the powerful coherent source of light in lasers to provide high quality interference contrast. The othe ...
Optical Fiber Sensors for Biomedical Applications
Optical Fiber Sensors for Biomedical Applications

... (Optics of Fiber and Fiber Probes, 1995 edition, Chapter 19), which primarily examined the role of optical fibers for tissue modification (e.g., photo-therapeutics such as laser heating), and the current treatise. Here, we focus on the clinical application of optical fiber technology for tissue asse ...
Symmetry breaking and strong coupling in planar optical
Symmetry breaking and strong coupling in planar optical

... wavelengths. For the asymmetric CSRR with arm lengths of L1 = 310 nm and L2 = 270 nm, the resonance arising due to asymmetry results in a transmission dip in the measured spectra at λ = 2.28 µm and in the simulated spectra at λ = 2.30 µm (green line). Interestingly, we observed a very shallow dip in ...
Module P6.3 Optical elements: prisms, lenses and spherical mirrors
Module P6.3 Optical elements: prisms, lenses and spherical mirrors

Optical phase conjugation in fiber
Optical phase conjugation in fiber

High-Q Microresonators as Lasing Elements for Silicon Photonics
High-Q Microresonators as Lasing Elements for Silicon Photonics

... precision and depth of their teachings on the subject. As part of the EPIC program, Axel Scherer provided us with essential materials and processing capabilities, and Eli Yablonovitch gave us unwavering encouragement and insightful advice on the complex nature of silicon surfaces. I also thank Joe S ...
Polarization-insensitive high-dispersion total internal reflection
Polarization-insensitive high-dispersion total internal reflection

... For optical systems designers, the maximum difference in IL between orthogonal polarization states is defined as polarization-dependent loss (PDL).7 For diffraction gratings, this definition yields the following expression for the PDL: PDL ⫽ 兩 IL TM ⫺ IL TE兩 , ...
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Nonlinear optics

Nonlinear optics (NLO) is the branch of optics that describes the behavior of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light. This nonlinearity is typically only observed at very high light intensities (values of the electric field comparable to interatomic electric fields, typically 108 V/m) such as those provided by lasers. Above the Schwinger limit, the vacuum itself is expected to become nonlinear. In nonlinear optics, the superposition principle no longer holds.Nonlinear optics remained unexplored until the discovery of Second harmonic generation shortly after demonstration of the first laser. (Peter Franken et al. at University of Michigan in 1961)
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