Femtosecond Laser Spectroscopy
... The laser first starts operation in a basically continuous way, but with significant fluctuation of the laser power. The saturable absorber acts to cause short-pulsed operation by absorbing the laser light in the cavity initially until the absorber is saturated meaning that eventually light will pa ...
... The laser first starts operation in a basically continuous way, but with significant fluctuation of the laser power. The saturable absorber acts to cause short-pulsed operation by absorbing the laser light in the cavity initially until the absorber is saturated meaning that eventually light will pa ...
Wavelength Converter Technology
... a single component, so it is conceptually simple. Its optical input power requirements are 0–10 dBm, but unless a special waveguide design is implemented for the gain section of the laser, it is polarization dependent. Moreover, the maximum bit rate, determined by the laser’s resonance frequency, is ...
... a single component, so it is conceptually simple. Its optical input power requirements are 0–10 dBm, but unless a special waveguide design is implemented for the gain section of the laser, it is polarization dependent. Moreover, the maximum bit rate, determined by the laser’s resonance frequency, is ...
Nanosecond laser-induced breakdown in pure and - AS
... we need to determine whether the optical breakdown threshold is defined by irradiance or fluence. In order to perform reliable, precise, and reproducible optical breakdown threshold measurements, we must address a number of issues related to the physics of the process. These critical issues, each of ...
... we need to determine whether the optical breakdown threshold is defined by irradiance or fluence. In order to perform reliable, precise, and reproducible optical breakdown threshold measurements, we must address a number of issues related to the physics of the process. These critical issues, each of ...
Experimental Realization of Two Decoupled Directional Couplers in a
... the CMEs and the band diagram. We observe in the far field that light injected in waveguide 2 exits the system only from waveguide 2 and 3. The optical near reveals that indeed light oscillates between waveguide 2 and 3 with virtually no leakage to the outer waveguides (1 and 4). In contrast, when li ...
... the CMEs and the band diagram. We observe in the far field that light injected in waveguide 2 exits the system only from waveguide 2 and 3. The optical near reveals that indeed light oscillates between waveguide 2 and 3 with virtually no leakage to the outer waveguides (1 and 4). In contrast, when li ...
MPE Tutorial Multiphoton Excitation Microscopy 5100 Patrick Henry Drive
... light being scattered. Thus the longer wavelengths used for multiphoton excitation will be scattered much less by small particles than the visible wavelengths used for conventional confocal microscopy. ...
... light being scattered. Thus the longer wavelengths used for multiphoton excitation will be scattered much less by small particles than the visible wavelengths used for conventional confocal microscopy. ...
A method to generate complex quasi-nondiffracting optical lat
... 1(c)]. However, the value of d has to be carefully selected since a small dk t assures almost diffractionless propagation, but at the same time it may result in patterns that are rather far from the desired ones, while for sufficiently large dkt one can generate patterns close to any desired beam th ...
... 1(c)]. However, the value of d has to be carefully selected since a small dk t assures almost diffractionless propagation, but at the same time it may result in patterns that are rather far from the desired ones, while for sufficiently large dkt one can generate patterns close to any desired beam th ...
Document
... Width of central fringe is 450 times slit width. Find W if the distance to the screen is 18000W. ...
... Width of central fringe is 450 times slit width. Find W if the distance to the screen is 18000W. ...
Theory of optical pulse propagation, dispersive and nonlinear effects
... temporal chirp, leading thereby to a better quality of the compressed pulses 2 . For a propagation length in the nonlinear medium that satisfies zNL < LD, however, Eq. (IV-162) remains a good approximation. The pulse shortening originating from self-phase modulation followed by dispersive delay play ...
... temporal chirp, leading thereby to a better quality of the compressed pulses 2 . For a propagation length in the nonlinear medium that satisfies zNL < LD, however, Eq. (IV-162) remains a good approximation. The pulse shortening originating from self-phase modulation followed by dispersive delay play ...
ptical Short Course International
... http://www.oscintl.com/prod01.htm In some cases the relationship between the effective focal length and the back focal distance is very important. In the case where the back focal distance is greater than the effective focal length this class of lens is called a retro focus or inverse telephoto lens ...
... http://www.oscintl.com/prod01.htm In some cases the relationship between the effective focal length and the back focal distance is very important. In the case where the back focal distance is greater than the effective focal length this class of lens is called a retro focus or inverse telephoto lens ...
Collective effects in the radiation pressure force
... Light scattering in cold atomic clouds is known to yield a number of interesting features. In the steady state regime, multiple scattering induces an effective long-range, repulsive force, which increases the size of the magneto-optical trap (MOT) and limits its spatial density [1–4]. In time-resolv ...
... Light scattering in cold atomic clouds is known to yield a number of interesting features. In the steady state regime, multiple scattering induces an effective long-range, repulsive force, which increases the size of the magneto-optical trap (MOT) and limits its spatial density [1–4]. In time-resolv ...
Fine Structure Constant Defines Visual Transparency of Graphene
... graphene membranes. The transmitted light intensity was measured by Ocean Optics HR2000 spectrometer. The recorded signal was then compared with the one obtained by directing the light beam through either an empty space or, as a double check, another aperture of the same size but without graphene. T ...
... graphene membranes. The transmitted light intensity was measured by Ocean Optics HR2000 spectrometer. The recorded signal was then compared with the one obtained by directing the light beam through either an empty space or, as a double check, another aperture of the same size but without graphene. T ...
Ellipsometry of light scattering from multilayer coatings
... 633-nm wavelength as a function of the incidence angle ~i! on an opaque ~150-nm-thick! Al layer deposited on a glass substrate by electron-beam evaporation. As shown in this figure, the agreement between theory and experiment is rather successful because the sample was of low quality. The complex in ...
... 633-nm wavelength as a function of the incidence angle ~i! on an opaque ~150-nm-thick! Al layer deposited on a glass substrate by electron-beam evaporation. As shown in this figure, the agreement between theory and experiment is rather successful because the sample was of low quality. The complex in ...
IOSR Journal of Applied Physics (IOSR-JAP)
... the polaron band [11]. The absorption increased with increasing PANI concentration. In accordance with Beers law, the absorption is proportional to the number of absorbing molecules. It is clear from the figure that the absorption edges have a red shift with increasing PANI concentrations indicating ...
... the polaron band [11]. The absorption increased with increasing PANI concentration. In accordance with Beers law, the absorption is proportional to the number of absorbing molecules. It is clear from the figure that the absorption edges have a red shift with increasing PANI concentrations indicating ...
Slit Lamp Imaging Clinical Short Primer - Haag
... The optical section cannot be observed unless the angle between the incident light and reflected light is large. In the cornea it is possible to achieve an angle of 90 degrees at which the whole corneal section will appear in focus. The maximum angle in the lens is around 45 – 50 degrees and this ca ...
... The optical section cannot be observed unless the angle between the incident light and reflected light is large. In the cornea it is possible to achieve an angle of 90 degrees at which the whole corneal section will appear in focus. The maximum angle in the lens is around 45 – 50 degrees and this ca ...
Imaging transport: optical measurements of
... Knowledge of transport parameters is important to the development of new optoelectronic materials and devices, such as ultraviolet (UV) semiconductor lasers and advanced solar cells. A series of experiments was performed to measure fundamental transport parameters in luminescent semiconductor materi ...
... Knowledge of transport parameters is important to the development of new optoelectronic materials and devices, such as ultraviolet (UV) semiconductor lasers and advanced solar cells. A series of experiments was performed to measure fundamental transport parameters in luminescent semiconductor materi ...
Additional sample assessment material - Unit 1 Principles
... The letters, A, B, C and D, represent four different elements. ...
... The letters, A, B, C and D, represent four different elements. ...
Two arfvedsonitic rhyolite intrusions from Cloghaneely, Co
... b, but t h a t this relationship is not always held. He postulates analogous variations in the refractive indices to those suggested above in accounting for the differences between types (i) and (ii) of intrusion A. Thus he suggests t h a t the variation in the position of' the optic axial plane is ...
... b, but t h a t this relationship is not always held. He postulates analogous variations in the refractive indices to those suggested above in accounting for the differences between types (i) and (ii) of intrusion A. Thus he suggests t h a t the variation in the position of' the optic axial plane is ...
1. Introduction - About the journal
... It is evident from Fig. 5 that with decreasing scintillation index (link distance decreasing below 5 km) the difference between both approximations decreases. Although there are a few optical wavelengths suitable for transmission through the atmosphere, FSO designers usually use near-IR spectral win ...
... It is evident from Fig. 5 that with decreasing scintillation index (link distance decreasing below 5 km) the difference between both approximations decreases. Although there are a few optical wavelengths suitable for transmission through the atmosphere, FSO designers usually use near-IR spectral win ...
... From a device point of view, domain inversion is used to improve the electro-optic response of LiNbO3 waveguide modulators in terms of bandwidth and driving voltage. With respect to standard single-domain structures, larger bandwidths and lower driving voltages can be obtained, thus achieving figure ...
Arbitrary GRIN component fabrication in optically
... Gradient index (GRIN) lenses and micro-optics are important devices in photonics and optoelectronics because they offer appealing form factors, simplified mounting and packaging for many applications, and additional degrees of freedom in lens design, enabling aberration or lens element reduction. Th ...
... Gradient index (GRIN) lenses and micro-optics are important devices in photonics and optoelectronics because they offer appealing form factors, simplified mounting and packaging for many applications, and additional degrees of freedom in lens design, enabling aberration or lens element reduction. Th ...
de Sénarmont Bias Retardation in DIC Microscopy Introduction
... This effect occurs because shear takes place at the quartzair interface in the lower prism wedge instead at the cemented boundary, as in a Wollaston prism. Refraction at the interface between the quartz wedges in a Nomarski prism causes the sheared wavefronts to converge with a crossover point outsi ...
... This effect occurs because shear takes place at the quartzair interface in the lower prism wedge instead at the cemented boundary, as in a Wollaston prism. Refraction at the interface between the quartz wedges in a Nomarski prism causes the sheared wavefronts to converge with a crossover point outsi ...
Optimal Measurement of Multimode Squeezed Light via Eigenmode
... A general theory of multimode squeezing based on an eigenmode description was developed The theory is widely applicable: PDC in bulk media, waveguides, spatial and/or temporal domains The eigenmodes of the squeezing define a basis for the field which is ...
... A general theory of multimode squeezing based on an eigenmode description was developed The theory is widely applicable: PDC in bulk media, waveguides, spatial and/or temporal domains The eigenmodes of the squeezing define a basis for the field which is ...
Document
... Light from a point monochromatic source travel, towards two coherent sources S1 and S2, after passing interfere each other finally the waves are made to fall on to screen and visible pattern is obtained on to screen. At the center of the screen the waves from the two sources are in phase. As we move ...
... Light from a point monochromatic source travel, towards two coherent sources S1 and S2, after passing interfere each other finally the waves are made to fall on to screen and visible pattern is obtained on to screen. At the center of the screen the waves from the two sources are in phase. As we move ...
Ph 76 ADVANCED PHYSICS LABORATORY — ATOMIC
... If the atoms in the vapor cell had a single excited state but two hyperfine ground states (we call them both “ground” states because neither can decay via an allowed transition), and the separation of the ground states was less than the Doppler width, then one might see a spectrum like in Figure 4. ...
... If the atoms in the vapor cell had a single excited state but two hyperfine ground states (we call them both “ground” states because neither can decay via an allowed transition), and the separation of the ground states was less than the Doppler width, then one might see a spectrum like in Figure 4. ...
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.