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Fiber optics for laser cooling and trapping
... key (Figure 3). In the special case of a dipole trap, laser beams with an elliptical cross-section are required. This is achieved by fiber collimators with integrated anamorphic beam expanders. They produce beams with an elliptical aspect ratio of up to 3:1. When using laser beam sources of differen ...
... key (Figure 3). In the special case of a dipole trap, laser beams with an elliptical cross-section are required. This is achieved by fiber collimators with integrated anamorphic beam expanders. They produce beams with an elliptical aspect ratio of up to 3:1. When using laser beam sources of differen ...
Optical Fiber Communication
... fiber are classified into two types: (i) Single mode fiber (SMF) and (ii) Multi-mode fiber (MMF) • Single-mode fibers – in single mode fiber only one mode can propagate through the fiber. This type of fiber has small core diameter(5um) and high cladding diameter(70um) and the difference between the ...
... fiber are classified into two types: (i) Single mode fiber (SMF) and (ii) Multi-mode fiber (MMF) • Single-mode fibers – in single mode fiber only one mode can propagate through the fiber. This type of fiber has small core diameter(5um) and high cladding diameter(70um) and the difference between the ...
The 9th Asia Pacific
... soon as 1964 [1-10]. For that purpose microlenses have been developed whose main role is to match the mode field diameters (MFD) of the fibers and waveguides to be coupled in order to improve coupling efficiency [5-6]. In other cases the role of the microlenses is to expand the MFD in order to relax ...
... soon as 1964 [1-10]. For that purpose microlenses have been developed whose main role is to match the mode field diameters (MFD) of the fibers and waveguides to be coupled in order to improve coupling efficiency [5-6]. In other cases the role of the microlenses is to expand the MFD in order to relax ...
Nanosecond laser-induced breakdown in pure and - AS
... Laser induced breakdown leading to optical damage in optically transparent material such as fused silica has been studied by many researchers since the invention of the laser more than four decades ago. It has been important to the development and application of high power lasers because laser induc ...
... Laser induced breakdown leading to optical damage in optically transparent material such as fused silica has been studied by many researchers since the invention of the laser more than four decades ago. It has been important to the development and application of high power lasers because laser induc ...
Fabrication and Application of Phase only Holograms for High
... Nowadays computer generated holograms play an important role in many fields spanning from consumer applications [1] to highly scientific use [2]. Such holograms can be realized either via addressable dynamic devices such as spatial light modulators [3] or via fixed structures commonly called diffrac ...
... Nowadays computer generated holograms play an important role in many fields spanning from consumer applications [1] to highly scientific use [2]. Such holograms can be realized either via addressable dynamic devices such as spatial light modulators [3] or via fixed structures commonly called diffrac ...
Understanding Microscopy And Filtering Techniques
... Although the four-component infinity-corrected digital video microscope system is simple, it offers little adaptability. If adding additional optical components into the optical plane is necessary for an application, the seven-component system is the ideal choice. The extra optical elements include ...
... Although the four-component infinity-corrected digital video microscope system is simple, it offers little adaptability. If adding additional optical components into the optical plane is necessary for an application, the seven-component system is the ideal choice. The extra optical elements include ...
Biomedical imaging in the undergraduate physics curriculum
... topic when discussed in a biological context, because cells are very commonly imaged specimens that are intrinsically clear and colorless and thus tend (under standard illumination and detection conditions) to generate images with very poor contrast.3 One way to circumvent this problem is experiment ...
... topic when discussed in a biological context, because cells are very commonly imaged specimens that are intrinsically clear and colorless and thus tend (under standard illumination and detection conditions) to generate images with very poor contrast.3 One way to circumvent this problem is experiment ...
SOIL PENETROMETER WITH RAMAN SAMPLING
... 5.22 Necessary irradiance needed at the sample to saturate the pixel charge at one second of integration time ............................................................................. 91 5.23 Necessary irradiance at the sample needed to saturate the pixel charge of the uncooled CCD camera at one ...
... 5.22 Necessary irradiance needed at the sample to saturate the pixel charge at one second of integration time ............................................................................. 91 5.23 Necessary irradiance at the sample needed to saturate the pixel charge of the uncooled CCD camera at one ...
Observation of Stimulated Emission of Surface Plasmon Polaritons Muralidhar Ambati, Sung Hyun Nam,
... final configuration results in SPP waveguides with erbium doped glass gain medium surrounding them as illustrated in Figure 1b. Figure 2a shows scanning electron microscope (SEM) image of the bonded sample’s cross section. The substrate and the superstrate are well bonded, with a thin interlayer for ...
... final configuration results in SPP waveguides with erbium doped glass gain medium surrounding them as illustrated in Figure 1b. Figure 2a shows scanning electron microscope (SEM) image of the bonded sample’s cross section. The substrate and the superstrate are well bonded, with a thin interlayer for ...
Light sheet-based fluorescence microscopy: more dimensions, more
... The same holds true in confocal fluorescence microscopy. Optical sectioning is not obtained in the illumination process, but by discriminating against the out of focus fluorescence light with a pinhole in front of the detector. Hence, most of the light emitted by the specimen does not reach the dete ...
... The same holds true in confocal fluorescence microscopy. Optical sectioning is not obtained in the illumination process, but by discriminating against the out of focus fluorescence light with a pinhole in front of the detector. Hence, most of the light emitted by the specimen does not reach the dete ...
Applied Fiber Optic Measurement for Geohydraulic Engineering
... vibration sensors for hydroelectric monitoring at the Winooski dam at Vermont. They modified photoelastic (or polarization) based fibre optic pressure sensors. Up to 10 sensors were attached onto each separate multimode fibre. The individual sensors were interrogated via optical frequency domain ref ...
... vibration sensors for hydroelectric monitoring at the Winooski dam at Vermont. They modified photoelastic (or polarization) based fibre optic pressure sensors. Up to 10 sensors were attached onto each separate multimode fibre. The individual sensors were interrogated via optical frequency domain ref ...
Single-Mode Photonic Band Gap Guidance of Light in Air
... breakdown, and it would have the potential to push the threshold intensities for stimulated Raman and Brillouin scattering (among other nonlinear effects) up to extremely high levels. We have shown that simple triangular lattices of air holes in silica (index contrast 1:1.46) can have full 2D PBGs i ...
... breakdown, and it would have the potential to push the threshold intensities for stimulated Raman and Brillouin scattering (among other nonlinear effects) up to extremely high levels. We have shown that simple triangular lattices of air holes in silica (index contrast 1:1.46) can have full 2D PBGs i ...
Spectral phase conjugation via temporal imaging
... provide more extensive dispersion compensation performance [4]. Specifically, SPC offers the potential to compensate for all orders of dispersion and some of the nonlinear effects in optical fibers such as self-phase modulation (SPM) and self steepening (SS), whereas TPC can compensate only for even ...
... provide more extensive dispersion compensation performance [4]. Specifically, SPC offers the potential to compensate for all orders of dispersion and some of the nonlinear effects in optical fibers such as self-phase modulation (SPM) and self steepening (SS), whereas TPC can compensate only for even ...
Evidence for wavelength dependence of the scattering phase
... More than 90% of stations from the Irish and Celtic Seas are found to have significantly higher backscattering ratios in the blue (470 nm) than in the red (676 nm) wave band. Attempts to obtain optical closure by use of radiance transfer modeling were least successful for stations at which backscatt ...
... More than 90% of stations from the Irish and Celtic Seas are found to have significantly higher backscattering ratios in the blue (470 nm) than in the red (676 nm) wave band. Attempts to obtain optical closure by use of radiance transfer modeling were least successful for stations at which backscatt ...
Scanning angle total internal reflection Raman spectroscopy and
... In Chapter 3, improvement of the scanning angle TIR Raman microscope and a Raman signal enhancement technique are described for the TIR geometry using a thin, smooth, gold film at the prism / sample interface as a means to increase the magnitude of the mean squared electric field (MSEF) encountered ...
... In Chapter 3, improvement of the scanning angle TIR Raman microscope and a Raman signal enhancement technique are described for the TIR geometry using a thin, smooth, gold film at the prism / sample interface as a means to increase the magnitude of the mean squared electric field (MSEF) encountered ...
Quantum Optics and Photonics
... quencies and required power levels are also within the range of diode lasers for this rubidium system, potentially allowing inexpensive and practical systems in the future. While this scheme is much simpler than the one employed in sodium, it is still necessary to introduce a detuning (typically 80 ...
... quencies and required power levels are also within the range of diode lasers for this rubidium system, potentially allowing inexpensive and practical systems in the future. While this scheme is much simpler than the one employed in sodium, it is still necessary to introduce a detuning (typically 80 ...
Noise in cavity ring-down spectroscopy caused by
... fit would vary evenly both above and below the decay time of the TEM00 mode as the initial relative phase of the mode excitations changed from 0 to π. This lack of symmetry in the variation in decay times was for a long time a point of confusion. Figure 7 and 8 also show the ratio of the two mode a ...
... fit would vary evenly both above and below the decay time of the TEM00 mode as the initial relative phase of the mode excitations changed from 0 to π. This lack of symmetry in the variation in decay times was for a long time a point of confusion. Figure 7 and 8 also show the ratio of the two mode a ...
5 The Basics of Confocal Microscopy
... the excitation light (in order to get very high intensities). The laser light reflects off a dichroic mirror hits two lenses mounted on motors. These mirrors scan the laser across the sample, dye in the sample fluoresces and the emitted light gets descanned by the same mirrors that are used to scan ...
... the excitation light (in order to get very high intensities). The laser light reflects off a dichroic mirror hits two lenses mounted on motors. These mirrors scan the laser across the sample, dye in the sample fluoresces and the emitted light gets descanned by the same mirrors that are used to scan ...
High-precision, high-accuracy ultralong-range swept
... Therefore, several full-range techniques were developed for Fourier-domain OCT. However, superior signal rolloff performance can be achieved with swept-source/ Fourier-domain OCT (SS-OCT) since the laser linewidth is much narrower than typical spectrometer resolutions. In SS-OCT, the imaging depth r ...
... Therefore, several full-range techniques were developed for Fourier-domain OCT. However, superior signal rolloff performance can be achieved with swept-source/ Fourier-domain OCT (SS-OCT) since the laser linewidth is much narrower than typical spectrometer resolutions. In SS-OCT, the imaging depth r ...
Characterization of Quinine and Its Determination
... of its excitation (absorption) spectrum. This is due to the fact that the vibrational levels in the ground and excited states have nearly the same spacing (see "Additional Reading, Figure 10-1"), and the molecular and orbital symmetries do not change. Assuming that all of the molecules are in the gr ...
... of its excitation (absorption) spectrum. This is due to the fact that the vibrational levels in the ground and excited states have nearly the same spacing (see "Additional Reading, Figure 10-1"), and the molecular and orbital symmetries do not change. Assuming that all of the molecules are in the gr ...
MEMS-based handheld confocal microscope for in
... collection. This is followed by a brief description of detection electronics and image formation. Optical performance is discussed in section three, followed by representative in vivo images and a discussion of our results. 2. Methods A diagram of the handheld confocal microscope as well as the ligh ...
... collection. This is followed by a brief description of detection electronics and image formation. Optical performance is discussed in section three, followed by representative in vivo images and a discussion of our results. 2. Methods A diagram of the handheld confocal microscope as well as the ligh ...
Slide 1
... (GVD), second order GVD and attenuation of the fiber. For parameterized signals (CW representation) an ordinary differential equation system taking into account stimulated Raman scattering (SRS) and frequency depended attenuation is applied. Inputs input = optical signal (signal type: Optical Blocks ...
... (GVD), second order GVD and attenuation of the fiber. For parameterized signals (CW representation) an ordinary differential equation system taking into account stimulated Raman scattering (SRS) and frequency depended attenuation is applied. Inputs input = optical signal (signal type: Optical Blocks ...
Fabrication and characterization of silicone-based - lammp
... Modulated Imaging is a new wide-field spectral imaging modality, based on the principals of diffuse optical spectroscopy and developed by our lab, which relies on spatial frequency domain measurements of diffuse reflectance acquired by a CCD camera to calculate the spatially resolved absorption coef ...
... Modulated Imaging is a new wide-field spectral imaging modality, based on the principals of diffuse optical spectroscopy and developed by our lab, which relies on spatial frequency domain measurements of diffuse reflectance acquired by a CCD camera to calculate the spatially resolved absorption coef ...