Montgomery self-imaging effect using computer
... exact formula for the radius qn of the nth ring will be given inpaffiffiffilater section, however, approximately it is qn nm0 . Such wavefields can be generated by 1- and 2-D objects. Furthermore, Montgomery self-imaging is not restricted to paraxial wavefields. The Montgomery effect was independently stud ...
... exact formula for the radius qn of the nth ring will be given inpaffiffiffilater section, however, approximately it is qn nm0 . Such wavefields can be generated by 1- and 2-D objects. Furthermore, Montgomery self-imaging is not restricted to paraxial wavefields. The Montgomery effect was independently stud ...
Supplement
... we optically pump the atoms from the |1⟩ state to the |6⟩ state, and from the |2⟩ state to the |5⟩ state (|1⟩ refers to the lowest hyperfine state, etc.), by exciting them to the mJ = 1/2 excited state manifold. At the magnetic fields used in the experiment, these levels are separated in frequency fro ...
... we optically pump the atoms from the |1⟩ state to the |6⟩ state, and from the |2⟩ state to the |5⟩ state (|1⟩ refers to the lowest hyperfine state, etc.), by exciting them to the mJ = 1/2 excited state manifold. At the magnetic fields used in the experiment, these levels are separated in frequency fro ...
Relative Phase Measurement of a Stark Wave Packet in the...
... The dynamics of Rydberg wave packets [1] in atomic systems have been studied for more than a decade using optical pump-probe techniques. In the most common form of the experiment, the optical Ramsey method [2], the total photoexcitation yield due to a sequence of two identical pulses is monitored as ...
... The dynamics of Rydberg wave packets [1] in atomic systems have been studied for more than a decade using optical pump-probe techniques. In the most common form of the experiment, the optical Ramsey method [2], the total photoexcitation yield due to a sequence of two identical pulses is monitored as ...
Prediction of photothermal phase signatures from arbitrary
... minimize their speed relative to the medium. This behavior is relevant for nanoparticles suspended in fluid, and as such, they remain stationary within their surrounding medium during measurement time. Heat transfer by convection occurs due to relative movement of two adjacent materials, from which ...
... minimize their speed relative to the medium. This behavior is relevant for nanoparticles suspended in fluid, and as such, they remain stationary within their surrounding medium during measurement time. Heat transfer by convection occurs due to relative movement of two adjacent materials, from which ...
Inverse scattering for frequency-scanned full-field
... where the delta functions enforce the conditions of the coordinate transformation. This operator concisely contains both the kernel and the coordinate transformations expressed in Eq. (10). To obtain the measurements needed to reconstruct 共r兲, one must vary both k and . In practice, however, it is ...
... where the delta functions enforce the conditions of the coordinate transformation. This operator concisely contains both the kernel and the coordinate transformations expressed in Eq. (10). To obtain the measurements needed to reconstruct 共r兲, one must vary both k and . In practice, however, it is ...
Laser risk document
... If thanks to additive technical control, there is no human access possible to the product at less than 3 meters, Minuit Une certified that the installation is a class 2. Aurélien Linz ...
... If thanks to additive technical control, there is no human access possible to the product at less than 3 meters, Minuit Une certified that the installation is a class 2. Aurélien Linz ...
Simultaneous slow and fast light effects using in atomic vapor
... which is better suited than the Raman doublet method for these applications, and for gyroscopy in particular. This technique has the interesting property that while it produces anomalous dispersion for one beam, it simultaneously produces normal dispersion for another. We recall briefly how the gain ...
... which is better suited than the Raman doublet method for these applications, and for gyroscopy in particular. This technique has the interesting property that while it produces anomalous dispersion for one beam, it simultaneously produces normal dispersion for another. We recall briefly how the gain ...
Spatial resolution in atom probe tomography
... The spatial resolution in atom probe tomography is highly anisotropic: the resolution in the direction of the analysis, the dimension that is built through the procedure described above, is often high enough to resolve atomic planes in the depth of the material (Warren, et al., 1998), as revealed in ...
... The spatial resolution in atom probe tomography is highly anisotropic: the resolution in the direction of the analysis, the dimension that is built through the procedure described above, is often high enough to resolve atomic planes in the depth of the material (Warren, et al., 1998), as revealed in ...
Optimal wavelength for ultrahigh-resolution optical
... of biological tissues. Figure 2 shows the calculated broadening of the autocorrelation function due to nonzero dispersion with Eq. (1). The horizontal axis shows OCT resolution which is determined by the source bandwidth. The vertical axis is the broadening ratio K for the autocorrelation function f ...
... of biological tissues. Figure 2 shows the calculated broadening of the autocorrelation function due to nonzero dispersion with Eq. (1). The horizontal axis shows OCT resolution which is determined by the source bandwidth. The vertical axis is the broadening ratio K for the autocorrelation function f ...
1489_1.pdf
... Industrial Materials Institute, National Research Council Canada, Boucherville, PQ, ...
... Industrial Materials Institute, National Research Council Canada, Boucherville, PQ, ...
Spectroscopic Imaging using Terahertz Time-Domain Signals
... extended their work to also extract the thickness, but only high index materials were considered [16]. In this work, we propose a new technique to determine simultaneously the thickness and the complex index of refraction of an unknown material. The THz-TDS system provides a time-domain signal of th ...
... extended their work to also extract the thickness, but only high index materials were considered [16]. In this work, we propose a new technique to determine simultaneously the thickness and the complex index of refraction of an unknown material. The THz-TDS system provides a time-domain signal of th ...
10 fs ultrafast all-optical switching in polystyrene nonlinear photonic
... All-optical switching has received much attention for a long time due to its potential applications in integrated optics and ultrahigh-speed information processing. Photonic crystal all-optical switching is a promising scheme to realize switching with ultrafast response time.1–6 The refractive index ...
... All-optical switching has received much attention for a long time due to its potential applications in integrated optics and ultrahigh-speed information processing. Photonic crystal all-optical switching is a promising scheme to realize switching with ultrafast response time.1–6 The refractive index ...
laser spectroscopy
... Figure 1 compares an older method with a modern method of doing optical spectroscopy. Figure 1a shows the energy levels of atomic deuterium and the allowed transitions for n = 2 and 3, 1b shows the Balmer α emission line of deuterium recorded at 50 K with a spectrograph, where the vertical lines in ...
... Figure 1 compares an older method with a modern method of doing optical spectroscopy. Figure 1a shows the energy levels of atomic deuterium and the allowed transitions for n = 2 and 3, 1b shows the Balmer α emission line of deuterium recorded at 50 K with a spectrograph, where the vertical lines in ...
Synopsis by Lori Moore
... each region depend on the application. For optical applications the wavelength of the light used and the size of the part are often the parameters which determine the cutoffs for the three regions. The lower order frequencies for optical components are typically specified using Seidel Aberrations, Z ...
... each region depend on the application. For optical applications the wavelength of the light used and the size of the part are often the parameters which determine the cutoffs for the three regions. The lower order frequencies for optical components are typically specified using Seidel Aberrations, Z ...
Get PDF - OSA Publishing
... proposed and numerically investigated. Distinct from previously studied absorbers, it could absorb light incident from both sides of the surface through an ultrathin three-layer metal-insulator-metal nanostructure. Patterned metal particles are adopted instead of metal films in this absorber. It sho ...
... proposed and numerically investigated. Distinct from previously studied absorbers, it could absorb light incident from both sides of the surface through an ultrathin three-layer metal-insulator-metal nanostructure. Patterned metal particles are adopted instead of metal films in this absorber. It sho ...
Laser Molecular Spectroscopy CHE466 Fall 2007
... The efficiency of a laser is related to its ability to sustain a population inversion and regenerate a population in the low energy state to initiate a new pumping cycle. As you may see a 2 level laser would be very inefficient, because a population inversion may not be acquired as a result of popul ...
... The efficiency of a laser is related to its ability to sustain a population inversion and regenerate a population in the low energy state to initiate a new pumping cycle. As you may see a 2 level laser would be very inefficient, because a population inversion may not be acquired as a result of popul ...
Laser microfabrication of alumina
... Alumina-silicon carbide nanocomposites have many potential applications, because of their excellent mechanical properties. However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pres ...
... Alumina-silicon carbide nanocomposites have many potential applications, because of their excellent mechanical properties. However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pres ...
Pulsed Solid State Laser with Passive Q
... rate and wavelength, can be obtained with these systems. Today we find solid-state lasers in industry as tools in many manufacturing processes, in hospitals and in medicine as radiation sources for therapeutic, cosmetic, and surgical procedures, in research facilities as part of the diagnostic instr ...
... rate and wavelength, can be obtained with these systems. Today we find solid-state lasers in industry as tools in many manufacturing processes, in hospitals and in medicine as radiation sources for therapeutic, cosmetic, and surgical procedures, in research facilities as part of the diagnostic instr ...
Ultrahigh-resolution optical coherence tomography
... Optical coherence tomography (OCT) is an emerging technique for high-resolution, twodimensional in vivo biomedical imaging [1,2]. In OCT, the cross-correlation function of a temporally low-coherence source is used to measure axial scattering from the sample. By scanning the beam across the tissue, a ...
... Optical coherence tomography (OCT) is an emerging technique for high-resolution, twodimensional in vivo biomedical imaging [1,2]. In OCT, the cross-correlation function of a temporally low-coherence source is used to measure axial scattering from the sample. By scanning the beam across the tissue, a ...
3D widefield light microscopy with better than 100 nm axial resolution
... translation-invariant imaging system can be completely described by its ‘optical transfer function’ (OTF), a function in reciprocal space (also called Fourier space, the space of spatial frequencies) which describes how strongly, and with what phase shift, each spatial frequency component of the sam ...
... translation-invariant imaging system can be completely described by its ‘optical transfer function’ (OTF), a function in reciprocal space (also called Fourier space, the space of spatial frequencies) which describes how strongly, and with what phase shift, each spatial frequency component of the sam ...
Get
... geometrically scaled to ~120nm in the sample), DMD patterns that corresponding to submicron features could be made. As shown in Fig. 2, via 10 pulses, we were able to fabricate complex structures with <1μm features. As the experimental system was not a perfect imaging system (i.e. not all of the hig ...
... geometrically scaled to ~120nm in the sample), DMD patterns that corresponding to submicron features could be made. As shown in Fig. 2, via 10 pulses, we were able to fabricate complex structures with <1μm features. As the experimental system was not a perfect imaging system (i.e. not all of the hig ...
1 - FunFACS
... experimentally verified in vertical-cavity amplifiers within the project by INLN. A general theory was developed and verified on several models where optical CS have been predicted (Scroggie, et. al., Phys. Rev. E 71, 046602, 2005). At difference with previous approaches, we found that CS can either ...
... experimentally verified in vertical-cavity amplifiers within the project by INLN. A general theory was developed and verified on several models where optical CS have been predicted (Scroggie, et. al., Phys. Rev. E 71, 046602, 2005). At difference with previous approaches, we found that CS can either ...
Measuring the Hyperfine Splittings of Lowest Energy Atomic
... condition gives the angles of constructively interfering light. The reflected beam off the blazed grating is the most intense and will be used as the beam sent from the laser to the rest of the experiment. A percentage of the incoming light is diffracted according to Equation 2 and in our Littrow c ...
... condition gives the angles of constructively interfering light. The reflected beam off the blazed grating is the most intense and will be used as the beam sent from the laser to the rest of the experiment. A percentage of the incoming light is diffracted according to Equation 2 and in our Littrow c ...
Imaging scanning tunneling microscope
... calibrated with a Hg/Ar lamp from 1.15 to 2.55 eV, and the spectral response was corrected with a tungsten lamp. The samples were made by electron beam evaporation of Au in high vacuum (1⫻10⫺6 Torr). The typical surface roughness, determined by atomic force microscopy, was 1 nm rms. Hexagonal lattic ...
... calibrated with a Hg/Ar lamp from 1.15 to 2.55 eV, and the spectral response was corrected with a tungsten lamp. The samples were made by electron beam evaporation of Au in high vacuum (1⫻10⫺6 Torr). The typical surface roughness, determined by atomic force microscopy, was 1 nm rms. Hexagonal lattic ...
Calculation of Complete Absorption and Intensity of Optical
... limits of the absorption line [12,13]. Furthermore, transition probabilities and atomic lifetimes [4] and optical absorption and reflectance [14] have been reported. Predicted He I line intensities and line ratios in microwavegenerated plasmas and from a recently developed collisional-radiative mode ...
... limits of the absorption line [12,13]. Furthermore, transition probabilities and atomic lifetimes [4] and optical absorption and reflectance [14] have been reported. Predicted He I line intensities and line ratios in microwavegenerated plasmas and from a recently developed collisional-radiative mode ...
AFM-IR
AFM-IR refers to atomic force microscope (AFM) based infrared (IR) spectroscopy. AFM-IR is a technique for chemical analysis of samples at nanoscale spatial resolution. AFM-IR is related to techniques including Tip-Enhanced Raman Spectroscopy (TERS) and scanning near-field optical microscopy (SNOM) and other methods of vibrational analysis with scanning probe microscopy. The AFM-IR technique uses a sharp tip of an AFM probe to measure the absorption of infrared light by a sample. Recording the amount of IR absorption as a function of wavelength or wavenumber creates nanoscale IR absorption spectra, which can be used to chemically characterize and even identify unknown materials. Recording the IR absorption as a function of position can be used to create chemical composition maps that show the spatial distribution of different chemical components. AFM-IR can overcome the diffraction limit that limits the spatial resolution of conventional infrared microscopy and microspectroscopy to the scale of several microns. AFM-IR can achieve spatial resolution down to around 20 nm, limited in some case only by the sharpness of the AFM probe tip and sensitivity down to the scale of molecular monolayers.