Frequency comb generation by CW laser injection
... 10 September 2012 / Vol. 20, No. 19 / OPTICS EXPRESS 21357 ...
... 10 September 2012 / Vol. 20, No. 19 / OPTICS EXPRESS 21357 ...
anatomy and physiology
... techniques to permit study of the transparent tubes. Viscoelastic dilation of SC provides a light path that permits use of new non-destructive techniques involving the dissecting microscope, phase contrast and Nomarski (differential interference microscopy) to image the tubes. Non-destructive imagin ...
... techniques to permit study of the transparent tubes. Viscoelastic dilation of SC provides a light path that permits use of new non-destructive techniques involving the dissecting microscope, phase contrast and Nomarski (differential interference microscopy) to image the tubes. Non-destructive imagin ...
Transmission resonances of electromagnetic wave through metallic
... Recently, a renewed interest has been cast to resonant transmissions of electromagnetic (EM) wave through subwavelength apertures in metallic gratings, which is inspired by the observation of extraordinary optical transmission through a metallic film with an array of subwavelength holes [1−9]. EM tr ...
... Recently, a renewed interest has been cast to resonant transmissions of electromagnetic (EM) wave through subwavelength apertures in metallic gratings, which is inspired by the observation of extraordinary optical transmission through a metallic film with an array of subwavelength holes [1−9]. EM tr ...
Variational Phase Imaging Using the Transport-of
... interference contrast (DIC) microscopy [8]. However, both DIC and PC images are challenging to segment (and to track) due to shade and halo artifacts (see Figure 1). This essentially limits their use since segmentation is a key step in cell biology [9]. Another well-established technique for phase i ...
... interference contrast (DIC) microscopy [8]. However, both DIC and PC images are challenging to segment (and to track) due to shade and halo artifacts (see Figure 1). This essentially limits their use since segmentation is a key step in cell biology [9]. Another well-established technique for phase i ...
Efficient electromagnetically induced transparency COMMUNICATIONS
... many potential applications, for example frequency upconversion [7,8], lasers without inversion [9,10], and highgain phase conjugation [I 1,121. Recently, we observed EIT and enhanced four-wave mixing based on EIT in Pr3+ doped Y,SiO, (Pr:YSO) for the first time, where we observed a 15% decrease in ...
... many potential applications, for example frequency upconversion [7,8], lasers without inversion [9,10], and highgain phase conjugation [I 1,121. Recently, we observed EIT and enhanced four-wave mixing based on EIT in Pr3+ doped Y,SiO, (Pr:YSO) for the first time, where we observed a 15% decrease in ...
Optical microscope - Frank`s Hospital Workshop
... Eyepieces are interchangeable and many different eyepieces can be inserted with different degrees of magnification. Typical magnification values for eyepieces include 5x, 10x and 2x. In some high performance microscopes, the optical configuration of the objective lens and eyepiece are matched to giv ...
... Eyepieces are interchangeable and many different eyepieces can be inserted with different degrees of magnification. Typical magnification values for eyepieces include 5x, 10x and 2x. In some high performance microscopes, the optical configuration of the objective lens and eyepiece are matched to giv ...
The 9th Asia Pacific
... different materials for non linear or sensors optical applications. a. Chalcogenide integrated waveguides for non linear applications Third-order nonlinear optical phenomena have been intensely studied in integrated devices [16-19] for different applications. The third order nonlinear efficiency of ...
... different materials for non linear or sensors optical applications. a. Chalcogenide integrated waveguides for non linear applications Third-order nonlinear optical phenomena have been intensely studied in integrated devices [16-19] for different applications. The third order nonlinear efficiency of ...
Michelson Interferometer
... beam is approximately parallel with the top of the interferometer and strikes the mirror at the centre. 5. Set the viewing screen opposite of the adjustable mirror M2. Note that the viewing screen should be placed at 1-2meter from the adjustable mirror to get better resolution. 6. To get circular fr ...
... beam is approximately parallel with the top of the interferometer and strikes the mirror at the centre. 5. Set the viewing screen opposite of the adjustable mirror M2. Note that the viewing screen should be placed at 1-2meter from the adjustable mirror to get better resolution. 6. To get circular fr ...
A| ω - Enrico Rubiola
... laser adiabatically, slowly enough that the standing wave inside the cavity was always in equilibrium with the incident beam. We can express this in the quantitative model by making ! very small. In this regime the expression ...
... laser adiabatically, slowly enough that the standing wave inside the cavity was always in equilibrium with the incident beam. We can express this in the quantitative model by making ! very small. In this regime the expression ...
image
... where ε is the angle between a ray and the optical axis, and is a small number (ε «1 rad). The range of validity of this approximation typically extends up to ~10-30 degrees, depending on the desired degree of accuracy. This regime is also known as “Gaussian optics” or “paraxial optics.” Note the as ...
... where ε is the angle between a ray and the optical axis, and is a small number (ε «1 rad). The range of validity of this approximation typically extends up to ~10-30 degrees, depending on the desired degree of accuracy. This regime is also known as “Gaussian optics” or “paraxial optics.” Note the as ...
Four Aces of Refractive Surgery: Aberrations
... the first to be affected. MTF measures the contrast loss with increasing spatial frequency when transferring an object to an image through an aberrated optical system6. In other words, it evaluates the correlation between contrast in the image formed by the optical system being measured and the orig ...
... the first to be affected. MTF measures the contrast loss with increasing spatial frequency when transferring an object to an image through an aberrated optical system6. In other words, it evaluates the correlation between contrast in the image formed by the optical system being measured and the orig ...
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... distance after which the direction of propagation is randomized. The direct measurement of these scattering parameters is extremely challenging, and, therefore, often simulations, e.g., Monte Carlo [6] or finite difference time domain [7], are used iteratively instead. Fourier transform light scatte ...
... distance after which the direction of propagation is randomized. The direct measurement of these scattering parameters is extremely challenging, and, therefore, often simulations, e.g., Monte Carlo [6] or finite difference time domain [7], are used iteratively instead. Fourier transform light scatte ...
Scanning Transmission Electron Microscope
... 1. Eyepiece or Ocular is what you look through at the top of the microscope. Typically, standard eyepieces have a magnifying power of 10x. Optional eyepieces of varying powers are available, typically from 5x-30x. 2. Eyepiece Tube holds the eyepieces in place above the objective lens. 3. Objective L ...
... 1. Eyepiece or Ocular is what you look through at the top of the microscope. Typically, standard eyepieces have a magnifying power of 10x. Optional eyepieces of varying powers are available, typically from 5x-30x. 2. Eyepiece Tube holds the eyepieces in place above the objective lens. 3. Objective L ...
Get PDF - OSA Publishing
... A particular solution is obtained if ϕ̄ = ϕ̄ ′ = θ2 + 2θ1 = θ̄2′ − 2θ̄3 = 0, that is, the reference ray in both the object and image space and the z-axis are parallel. Such a particular solution leads to the design proposed by Chrisp et al. [4]. The meridional and sagittal images are in fact curves ...
... A particular solution is obtained if ϕ̄ = ϕ̄ ′ = θ2 + 2θ1 = θ̄2′ − 2θ̄3 = 0, that is, the reference ray in both the object and image space and the z-axis are parallel. Such a particular solution leads to the design proposed by Chrisp et al. [4]. The meridional and sagittal images are in fact curves ...
Capacity of coherent free-space optical links using
... The downconverted heterodyne or homodyne power is maximized when the spatial field of the received signal matches that of the local oscillator. Any mismatch between the amplitudes and phases of the two fields will result in a reduction of the downconverted power, i.e., fading. In the case of cohere ...
... The downconverted heterodyne or homodyne power is maximized when the spatial field of the received signal matches that of the local oscillator. Any mismatch between the amplitudes and phases of the two fields will result in a reduction of the downconverted power, i.e., fading. In the case of cohere ...
Conference title, upper and lower case, bolded, 18 point type
... Fig. S3. Sketch of the experimental setup. The laser beam from a fiber coupled laser is collimated by means of a fiber collimator (Thorlabs RC04APC-P01) with a beam diameter of about 4 mm. The collimated beam then passes through a Glan-Thompson polarizer (Thorlabs GTH10) and a quarter waveplate (ach ...
... Fig. S3. Sketch of the experimental setup. The laser beam from a fiber coupled laser is collimated by means of a fiber collimator (Thorlabs RC04APC-P01) with a beam diameter of about 4 mm. The collimated beam then passes through a Glan-Thompson polarizer (Thorlabs GTH10) and a quarter waveplate (ach ...
High-speed and high-efficiency travelling wave single
... of the effective refractive index (as obtained from COMSOL simulations) of the bare and NbN-covered waveguides are identical within 0.4%. Therefore, the optical mode experiences a negligible change in spatial expansion, resulting in a smooth transition between the two regions. The simulated absorpti ...
... of the effective refractive index (as obtained from COMSOL simulations) of the bare and NbN-covered waveguides are identical within 0.4%. Therefore, the optical mode experiences a negligible change in spatial expansion, resulting in a smooth transition between the two regions. The simulated absorpti ...
Novel Machine Learning Approaches to Molecular Coherent Control
... population in that level due to transient constructive interference between non-resonant terms. A second pulse is needed to take advantage of this enhancement14. The results for I2 (see Fig. 5) fall ...
... population in that level due to transient constructive interference between non-resonant terms. A second pulse is needed to take advantage of this enhancement14. The results for I2 (see Fig. 5) fall ...
Neutron Reflectivity
... ns using reflection coefficients overcomes this limitation Define characteristic matrix per layer, in optical terms from the relationship between electric vectors in successive layers, iβ j −1 ...
... ns using reflection coefficients overcomes this limitation Define characteristic matrix per layer, in optical terms from the relationship between electric vectors in successive layers, iβ j −1 ...
Sample pages 1 PDF
... However, BaK4 glass has a lower Abbé number than Bk7 glass. This means that any rays that are not normal (perpendicular) to the prism when they enter or exit it will be dispersed more by BaK4 glass than by BK7 glass. At the magnification in most binoculars, you are unlikely to be able to detect this ...
... However, BaK4 glass has a lower Abbé number than Bk7 glass. This means that any rays that are not normal (perpendicular) to the prism when they enter or exit it will be dispersed more by BaK4 glass than by BK7 glass. At the magnification in most binoculars, you are unlikely to be able to detect this ...
Experiments in Optics - Workspace
... lens. Note that the quantities a, x, and f in Eq. (1) all have dimensions of length and should all be expressed in the same units, e.g. mm. Figure 2 shows the single slit diffraction pattern. ...
... lens. Note that the quantities a, x, and f in Eq. (1) all have dimensions of length and should all be expressed in the same units, e.g. mm. Figure 2 shows the single slit diffraction pattern. ...
Encoding and Decoding Non-separable States of Polarization and Spatial Mode of Single Photons
... singular knots,6 Bessel beams,7 or even conjugate “ghostly” images.8 Spatial modes are desirable because they contain an large, in principle infinite, Hilbert space.9 One disadvantage of the previous works is that the states involved in the entangled superposition are determined by the down-conversi ...
... singular knots,6 Bessel beams,7 or even conjugate “ghostly” images.8 Spatial modes are desirable because they contain an large, in principle infinite, Hilbert space.9 One disadvantage of the previous works is that the states involved in the entangled superposition are determined by the down-conversi ...
The Influence of Air-hole Filling Fraction of Photonics Crystal Fibers
... The variation of the air-hole filling fraction will affect the modal refractive index and area of core. These structure changes of PCF can influence on the SBS process. So we first achieve the results about the modal refractive index of core and calculate the area of the core by using the finite ele ...
... The variation of the air-hole filling fraction will affect the modal refractive index and area of core. These structure changes of PCF can influence on the SBS process. So we first achieve the results about the modal refractive index of core and calculate the area of the core by using the finite ele ...
Performance of extended depth of field systems and
... Figure 1 Optical setup: an object O is observed through the optic at a position I In this paper, we deal with optical systems containing both phase and amplitude modulation. We introduce a complex apodization function in the pupil, expressed as: ...
... Figure 1 Optical setup: an object O is observed through the optic at a position I In this paper, we deal with optical systems containing both phase and amplitude modulation. We introduce a complex apodization function in the pupil, expressed as: ...
Optical Metrology vs SEM. Range, Accuracy, Repeatability
... optical and SEM measurements and the halo effect. The disadvantage of using the multipoint calibration is that it is relatively hard to duplicate from machine to machine. We have noted that optical metrology is especially suited to determining printability. At the same time, SEM measurements are wel ...
... optical and SEM measurements and the halo effect. The disadvantage of using the multipoint calibration is that it is relatively hard to duplicate from machine to machine. We have noted that optical metrology is especially suited to determining printability. At the same time, SEM measurements are wel ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.