Using the Spectrophotometer
... compounds in that sample, so a spectrophotometer can also be used to determine concentrations of compounds in solution. Finally, because particles in suspension will scatter light (thus preventing it from reaching the light detector), spectrophotometers may also be used to estimate the number of cel ...
... compounds in that sample, so a spectrophotometer can also be used to determine concentrations of compounds in solution. Finally, because particles in suspension will scatter light (thus preventing it from reaching the light detector), spectrophotometers may also be used to estimate the number of cel ...
Direct Characterization of Plasmonic Slot Waveguides and
... excitation due to interaction of metallic bars with the antenna elements and their detuning as well as counterphase slot plasmons excitation in the modified bow-tie (2BA) antennas, resulting in ∼1.7 times smaller effective area, but ∼1.5 times larger bandwidth with respect to that of 2DA. The short- ...
... excitation due to interaction of metallic bars with the antenna elements and their detuning as well as counterphase slot plasmons excitation in the modified bow-tie (2BA) antennas, resulting in ∼1.7 times smaller effective area, but ∼1.5 times larger bandwidth with respect to that of 2DA. The short- ...
Effect of barrier height on linear and nonlinear
... Quantum dots behave like artificial atoms and their electronic and optical properties are significantly different as compared to bulk [1]. In the interaction of radiation with matter at low radiation intensity the induced polarization depends linearly on the electric field and linear response is obt ...
... Quantum dots behave like artificial atoms and their electronic and optical properties are significantly different as compared to bulk [1]. In the interaction of radiation with matter at low radiation intensity the induced polarization depends linearly on the electric field and linear response is obt ...
glossary of optical terms
... rays that can be imaged by an optical system. aperture, numerical (NA). Sine of the half-angle of the widest bundle of rays capable of entering a lens, multiplied by the index of refraction of the medium containing that bundle of rays. aperture, front operating. Limiting aperture at the front of a l ...
... rays that can be imaged by an optical system. aperture, numerical (NA). Sine of the half-angle of the widest bundle of rays capable of entering a lens, multiplied by the index of refraction of the medium containing that bundle of rays. aperture, front operating. Limiting aperture at the front of a l ...
Band gap characterization and slow light effects in
... high-index regions. This waveguide geometry can be used in a wide range of photonic devices, such as ring resonators [2] or high-Q Fabry-Perot resonator [3]; in particular, it is useful when the optical property of a low-refractive index material has to be exploited. In this latter case, in fact, th ...
... high-index regions. This waveguide geometry can be used in a wide range of photonic devices, such as ring resonators [2] or high-Q Fabry-Perot resonator [3]; in particular, it is useful when the optical property of a low-refractive index material has to be exploited. In this latter case, in fact, th ...
Three-Dimensional Simulation of Vertical-Cavity Surface
... (under $5 packaged) than that of LEDs. As already mentioned, they are suitable for easy array production, moreover, the dispersion limits of the transmitting optical fiber may be circumvented by wavelength-division multiplexing technique [8]. VCSELs can also count on interesting applications, in whic ...
... (under $5 packaged) than that of LEDs. As already mentioned, they are suitable for easy array production, moreover, the dispersion limits of the transmitting optical fiber may be circumvented by wavelength-division multiplexing technique [8]. VCSELs can also count on interesting applications, in whic ...
Ultrafast adaptive optical near-field control
... Ultrashort laser pulses excite the optical near field of the nanostructure over a range of frequencies and the superposition of these field distributions with different frequencies determines the actual local field evolution. Hence, the spectral phase of the illuminating laser pulses influences the ...
... Ultrashort laser pulses excite the optical near field of the nanostructure over a range of frequencies and the superposition of these field distributions with different frequencies determines the actual local field evolution. Hence, the spectral phase of the illuminating laser pulses influences the ...
Evaluation of the scintillation loss for optical
... Therefore, the dependence of the loss ᐉsc on 具P典 is given by the function g0 and more precisely on the ratio g0共具P典p兲 / g0共具P典兲. The loss ᐉsc should then be found numerically. Assuming the common OOK modulation, the equivalent of the g0 function has been expressed in several publications 共See, for e ...
... Therefore, the dependence of the loss ᐉsc on 具P典 is given by the function g0 and more precisely on the ratio g0共具P典p兲 / g0共具P典兲. The loss ᐉsc should then be found numerically. Assuming the common OOK modulation, the equivalent of the g0 function has been expressed in several publications 共See, for e ...
Ultrafast Nonlinear Optical Signals Viewed from the Molecule`s
... By using a quantum description of the field we show that examination of the relevant processes from the viewpoint of the material naturally leads to a description in terms of transition amplitudes rather than susceptibilities. Once the optical signals have been recast in terms of these transition am ...
... By using a quantum description of the field we show that examination of the relevant processes from the viewpoint of the material naturally leads to a description in terms of transition amplitudes rather than susceptibilities. Once the optical signals have been recast in terms of these transition am ...
Diffuse optical imaging
... optimal system to be trialled. 3. Functional brain imaging (a ) Optical topography of brain function When imaging the brain, the clinical question is very different from that for the breast. Rather than detecting a static change that is constant during the examination, which is the case when imaging ...
... optimal system to be trialled. 3. Functional brain imaging (a ) Optical topography of brain function When imaging the brain, the clinical question is very different from that for the breast. Rather than detecting a static change that is constant during the examination, which is the case when imaging ...
Green's function formulation for third-harmonic generation microscopy
... We report a theoretical study of third-harmonic generation (THG) microscopy by use of a Green’s function formulation. The third-harmonic signal under a tight-focusing condition is calculated for samples with various shapes and sizes. Our results show that THG signals can be efficiently generated at ...
... We report a theoretical study of third-harmonic generation (THG) microscopy by use of a Green’s function formulation. The third-harmonic signal under a tight-focusing condition is calculated for samples with various shapes and sizes. Our results show that THG signals can be efficiently generated at ...
ppt
... Application specific reflective coatings have been developed and are being implemented in LHC experiments currently under construction. The broad-band reflective coating consists of an aluminum film combined with one or two pairs of low and high index dielectric layers. The layer stacks are designed ...
... Application specific reflective coatings have been developed and are being implemented in LHC experiments currently under construction. The broad-band reflective coating consists of an aluminum film combined with one or two pairs of low and high index dielectric layers. The layer stacks are designed ...
LASER LITHOTRIPSY OF KIDNEY CALCULI WITH A Nd:YAG
... destruction is ten times more effective than when the stone is surrounded by air (12). This is probably due to improved coupling of the plasma to the stone and not because of differences in plasma initiation. This conclusion has been drawn as the fluence requiredto initiate the plasma for a given de ...
... destruction is ten times more effective than when the stone is surrounded by air (12). This is probably due to improved coupling of the plasma to the stone and not because of differences in plasma initiation. This conclusion has been drawn as the fluence requiredto initiate the plasma for a given de ...
Optical Coherence Tomography Imaging in Developmental Biology
... Depending on the desired SNR performance, incident powers of 5-10 mW are typically required for OCT imaging of 250-500-square pixel images at several frames per second. If lower data-acquisition speeds or SNR can be tolerated, power requirements can be reduced accordingly. The majority of OCT imagin ...
... Depending on the desired SNR performance, incident powers of 5-10 mW are typically required for OCT imaging of 250-500-square pixel images at several frames per second. If lower data-acquisition speeds or SNR can be tolerated, power requirements can be reduced accordingly. The majority of OCT imagin ...
Soft-x-ray laser interferometry of a pinch discharge using a tabletop... * C. H. Moreno, M. C. Marconi,
... @5#, or are on the verge of reaching gain saturation and producing the output energies that will allow their use in plasma diagnostics @6,7#. These tabletop soft-x-ray lasers could be used to probe a great variety of dense plasmas. However, multilayer beamsplitters cannot be presently developed for ...
... @5#, or are on the verge of reaching gain saturation and producing the output energies that will allow their use in plasma diagnostics @6,7#. These tabletop soft-x-ray lasers could be used to probe a great variety of dense plasmas. However, multilayer beamsplitters cannot be presently developed for ...
Optical Materials for LWIR Applications
... thermal, and mechanical properties. Conversely, there are relatively few materials (approximately 10 materials) available that transmit LWIR light. These materials often tend to be much more expensive and fragile than available visible spectrum materials. Even though there are relatively few materia ...
... thermal, and mechanical properties. Conversely, there are relatively few materials (approximately 10 materials) available that transmit LWIR light. These materials often tend to be much more expensive and fragile than available visible spectrum materials. Even though there are relatively few materia ...
Optical coherence tomography (OCT): a review
... reach of conventional bright-field and confocal microscopes. Probing depths exceeding 2 cm have been demonstrated in transparent tissues, including the eye and the frog embryo [13], [14]. In the skin and other highly scattering tissues, OCT can image small blood vessels and other structures as deep ...
... reach of conventional bright-field and confocal microscopes. Probing depths exceeding 2 cm have been demonstrated in transparent tissues, including the eye and the frog embryo [13], [14]. In the skin and other highly scattering tissues, OCT can image small blood vessels and other structures as deep ...
super-resolved fluorescence microscopy
... 2.1 Far-field. Resolution improvements have been made with confocal (Cremer and Cremer, 1978; Sheppard and Wilson, 1981; Brakenhoff et al., 1985)) and multiphoton microscopy (Zipfel et al., 2003; Hell and Stelzer, 2002). Both these methods allow for effective background suppression and have been imp ...
... 2.1 Far-field. Resolution improvements have been made with confocal (Cremer and Cremer, 1978; Sheppard and Wilson, 1981; Brakenhoff et al., 1985)) and multiphoton microscopy (Zipfel et al., 2003; Hell and Stelzer, 2002). Both these methods allow for effective background suppression and have been imp ...
Semiperiodicity versus periodicity for ultra broadband optical
... are relatively strong, the resulting enhancement of the optical absorption is narrowband conforming to the narrow spectral range of the excited mode.8,9 On the other side, random grating structures are capable of exciting a broad range of weak modes, however, as these multiple modes are rather faint ...
... are relatively strong, the resulting enhancement of the optical absorption is narrowband conforming to the narrow spectral range of the excited mode.8,9 On the other side, random grating structures are capable of exciting a broad range of weak modes, however, as these multiple modes are rather faint ...
III.Principle Of Polarization-Insensitive Tunable Wavelength
... polarizing beam splitter (PBS). PBS plays an important role in numerous optical systems. It can split an incident beam into two orthogonally polarized beams and also insensitive polarization properties. A segment of the highly nonlinear fiber (HNLF) is placed in a loop connecting Ports B and C of th ...
... polarizing beam splitter (PBS). PBS plays an important role in numerous optical systems. It can split an incident beam into two orthogonally polarized beams and also insensitive polarization properties. A segment of the highly nonlinear fiber (HNLF) is placed in a loop connecting Ports B and C of th ...
3D optical data storage
3D optical data storage is the term given to any form of optical data storage in which information can be recorded and/or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).This innovation has the potential to provide petabyte-level mass storage on DVD-sized discs (120mm). Data recording and readback are achieved by focusing lasers within the medium. However, because of the volumetric nature of the data structure, the laser light must travel through other data points before it reaches the point where reading or recording is desired. Therefore, some kind of nonlinearity is required to ensure that these other data points do not interfere with the addressing of the desired point.No commercial product based on 3D optical data storage has yet arrived on the mass market, although several companies are actively developing the technology and claim that it may become available ""soon"".