An Introduction to Pulsed Dye Lasers Introduction Light amplification
... The mechanism for dye laser emission is shown in Figure 5. Dye molecules are excited into excited singlet states by the pump light source. Internal conversion rapidly occurs resulting in all of the molecules dropping into the first vibrational level of the lowest excited state. There are still more ...
... The mechanism for dye laser emission is shown in Figure 5. Dye molecules are excited into excited singlet states by the pump light source. Internal conversion rapidly occurs resulting in all of the molecules dropping into the first vibrational level of the lowest excited state. There are still more ...
Vanadium Dioxide - Vanderbilt`s ETD Server
... Electrostriction causes dielectric materials to become compressed when experiencing a strong electric field. Molecules experiencing the electric field are drawn to the region of increasing field strength. This results in a change in the density of the material that then affects the dielectric consta ...
... Electrostriction causes dielectric materials to become compressed when experiencing a strong electric field. Molecules experiencing the electric field are drawn to the region of increasing field strength. This results in a change in the density of the material that then affects the dielectric consta ...
Soft-x-ray laser interferometry of a plasma with a tabletop 420
... the plasma contained C and O ions (ionized up to O resulting from material ablated by the precursor discharge and Cu ions arising from vaporization of the cathode. The spectra were dominated by lines of O IV –O V and contained lines of Cu III and Cu IV. The extent of the plasma along the path of the ...
... the plasma contained C and O ions (ionized up to O resulting from material ablated by the precursor discharge and Cu ions arising from vaporization of the cathode. The spectra were dominated by lines of O IV –O V and contained lines of Cu III and Cu IV. The extent of the plasma along the path of the ...
V Groove Measurement with White Light Interferometer
... error of almost 200m. These errors can be attributed to multiple reflections which are generally assumed to be negligible in WLI. For the particular V-groove geometry studied here we find the returned signal results from 3 surface reflections. It is worth noting that the contrast of the fringes fol ...
... error of almost 200m. These errors can be attributed to multiple reflections which are generally assumed to be negligible in WLI. For the particular V-groove geometry studied here we find the returned signal results from 3 surface reflections. It is worth noting that the contrast of the fringes fol ...
The Microscope in a Computer: Image Synthesis from Three
... simply intensity for the radiated power per unit area. The light intensity is a direct measure of the signal collected by recording media that convert light energy to other forms of energy. Examples of these recording media include photoresists, CCD cameras, and the retina. We will assume non-magnet ...
... simply intensity for the radiated power per unit area. The light intensity is a direct measure of the signal collected by recording media that convert light energy to other forms of energy. Examples of these recording media include photoresists, CCD cameras, and the retina. We will assume non-magnet ...
Final Report DURIP AFOSR Grant FA9550-06-1
... The laser beam passes through a 193nm UV optics group, which consists of a polarizer for parallel or perpendicular polarization of the laser beam, a 6 cm diameter and 15 cm focal length lens with an anti reflection coating, and a 5 cm diameter fused silica window. These are special optics designed t ...
... The laser beam passes through a 193nm UV optics group, which consists of a polarizer for parallel or perpendicular polarization of the laser beam, a 6 cm diameter and 15 cm focal length lens with an anti reflection coating, and a 5 cm diameter fused silica window. These are special optics designed t ...
Holografie – lasery
... plate. In the second stage, coherent light was shone through the developed photograph. A real and a virtual image of the object were obtained. This method is illustrated in figure. As it was not possible at the time to produce suitable beams of electrons, Gabor demonstrated the feasibility of his te ...
... plate. In the second stage, coherent light was shone through the developed photograph. A real and a virtual image of the object were obtained. This method is illustrated in figure. As it was not possible at the time to produce suitable beams of electrons, Gabor demonstrated the feasibility of his te ...
All-dielectric subwavelength metasurface focusing lens
... smooth radial dependence of phase increment on transmission, avoiding 2π phase steps. Quasi-parabolic radial gradients of phase along the surface were created by slow variation of geometric parameters of the fine pattern. The meta-surface thickness is approximately onethird of the free-space wavelen ...
... smooth radial dependence of phase increment on transmission, avoiding 2π phase steps. Quasi-parabolic radial gradients of phase along the surface were created by slow variation of geometric parameters of the fine pattern. The meta-surface thickness is approximately onethird of the free-space wavelen ...
Concepts of optical signal processing and optical communications
... In optics, pulses with durations down to 10fs are available for switching operations, orders of magnitude shorter than the shortest electrical pulses. To exploit this potential, however, we shall have to address broadband optical pulse propagation, which we shall do at the end of this chapter. Poten ...
... In optics, pulses with durations down to 10fs are available for switching operations, orders of magnitude shorter than the shortest electrical pulses. To exploit this potential, however, we shall have to address broadband optical pulse propagation, which we shall do at the end of this chapter. Poten ...
EP23850853
... Lasers with ring cavity can be used to measure angular rotation with great accuracy and precision. These active sensors show a wide dynamic range and a fast update rate. They are vibration insensitive and have a long and reliable lifetime, about > 30,000 hours. Disadvantages are mainly some performa ...
... Lasers with ring cavity can be used to measure angular rotation with great accuracy and precision. These active sensors show a wide dynamic range and a fast update rate. They are vibration insensitive and have a long and reliable lifetime, about > 30,000 hours. Disadvantages are mainly some performa ...
Optical image recognition of three-dimensional objects
... Among the temporal frequency-modulation techniques, the use of active optical heterodyne scanning has been studied extensively by Poon and Korpel,12 Poon,13 and Indebetouw and Poon.15 In the optical heterodyne scanning system two laser beams of different temporal frequency that carry the information ...
... Among the temporal frequency-modulation techniques, the use of active optical heterodyne scanning has been studied extensively by Poon and Korpel,12 Poon,13 and Indebetouw and Poon.15 In the optical heterodyne scanning system two laser beams of different temporal frequency that carry the information ...
Heterogenously integrated InP on Si microdisk lasers
... heterogeneously integrated on SOI and coupled to a Si bus waveguide. After a general introduction on the fabrication and the operation principles, we will describe various improvements in the fabrication technology. This includes improvements in the yield of the bonding of the InP die on the SOI die ...
... heterogeneously integrated on SOI and coupled to a Si bus waveguide. After a general introduction on the fabrication and the operation principles, we will describe various improvements in the fabrication technology. This includes improvements in the yield of the bonding of the InP die on the SOI die ...
Doppler-Free Saturated Absorption Spectroscopy of Rubidium Using a Tunable Diode Laser
... to avoid air currents, and mounting the cavity on rubber cushions to reduce the movement due to vibrations [1]. Tunable diode lasers’ narrow linewidth makes them particularly useful for high resolution spectroscopy. Recall, atomic spectral lines are due to transitions in an atom between energy level ...
... to avoid air currents, and mounting the cavity on rubber cushions to reduce the movement due to vibrations [1]. Tunable diode lasers’ narrow linewidth makes them particularly useful for high resolution spectroscopy. Recall, atomic spectral lines are due to transitions in an atom between energy level ...
The basic purpose of a lens of any kind is to collect the light
... Fig. 1: Basic parameters of an optical system. ...
... Fig. 1: Basic parameters of an optical system. ...
NPM-O22 Influences of different low level laser power at
... the laser were measured with VOXEL command. VOXEL in ASAP was used to capture the energy that was lost to absorption within the volume, during this study 1000 000 rays was used to transfer the power from the source to the skin, the total energy absorbed from rays passing through this region was reco ...
... the laser were measured with VOXEL command. VOXEL in ASAP was used to capture the energy that was lost to absorption within the volume, during this study 1000 000 rays was used to transfer the power from the source to the skin, the total energy absorbed from rays passing through this region was reco ...
On the chromatic aberration of microlenses
... To investigate an achromatic design for a microlens we fix a diameter. Then to allow comparisons a wavelength of reference fixing Zp is required. It is now possible to plot the relative variations of this Zp against the wavelength of a defined spectrum. For example, Fig. 9 shows the variations as f ...
... To investigate an achromatic design for a microlens we fix a diameter. Then to allow comparisons a wavelength of reference fixing Zp is required. It is now possible to plot the relative variations of this Zp against the wavelength of a defined spectrum. For example, Fig. 9 shows the variations as f ...
Optical Interconnect and Sensing
... Photoemissive. These detectors use the photoelectric effect, in which incident photons free electrons from the surface of the detector material. These devices include vacuum photodiodes, CCD camera, bipolar phototubes, and photomultiplier tubes. • Photoconductive. The electrical conductivity of the ...
... Photoemissive. These detectors use the photoelectric effect, in which incident photons free electrons from the surface of the detector material. These devices include vacuum photodiodes, CCD camera, bipolar phototubes, and photomultiplier tubes. • Photoconductive. The electrical conductivity of the ...
Sorting by Periodic Potential Energy Landscapes: Optical
... involve classical transport of small objects through modulated potential energy landscapes. While the generic behavior of modulated transport is well understood in one dimension [1], fundamental questions remain for higher dimensions. Colloidal particles flowing through arrays of optical tweezers [2 ...
... involve classical transport of small objects through modulated potential energy landscapes. While the generic behavior of modulated transport is well understood in one dimension [1], fundamental questions remain for higher dimensions. Colloidal particles flowing through arrays of optical tweezers [2 ...
TUPB049
... due to vibrations and the low dynamic range of the camera, by reducing the exposure time of the image acquisition accordingly. It was possible to study the effect of the incoherent depth of field on the horizontal beam size measurements analyzing the visibility distribution as a function of the pinh ...
... due to vibrations and the low dynamic range of the camera, by reducing the exposure time of the image acquisition accordingly. It was possible to study the effect of the incoherent depth of field on the horizontal beam size measurements analyzing the visibility distribution as a function of the pinh ...
Spectral Domain Optical Coherence Tomography
... Mapping the true optic nerve head topography is possible with SDOCT (Figure 2 and Figure 5). Previous OCT technologies have not allowed for accurate maps of optic nerve head topography. Even with the ultra-high resolution titanium-sapphire lasers, slower acquisition speeds necessitate realignment of ...
... Mapping the true optic nerve head topography is possible with SDOCT (Figure 2 and Figure 5). Previous OCT technologies have not allowed for accurate maps of optic nerve head topography. Even with the ultra-high resolution titanium-sapphire lasers, slower acquisition speeds necessitate realignment of ...
Shedding Light on Hybrid Optics: A Tutorial in
... Dz = fDx/L, where Dx is the resolution of the screws and L is the length of the lever arm. For 80 TPI screws, a 1-mm focal length lens, and a 20-mm lever arm, Dz = 1 mm · 2 µm/20 mm = 0.1 µm. This patented technique1 offers a simple way to assemble hybrid optics systems. It is insensitive to machini ...
... Dz = fDx/L, where Dx is the resolution of the screws and L is the length of the lever arm. For 80 TPI screws, a 1-mm focal length lens, and a 20-mm lever arm, Dz = 1 mm · 2 µm/20 mm = 0.1 µm. This patented technique1 offers a simple way to assemble hybrid optics systems. It is insensitive to machini ...
Laser and its applications
... refractive index. Pure silica has a refractive index of 1.45 at 1 mm and B2O3 can be used to lower the refractive index, whilst other additives such as GeO2 raise it. Thus a typical fiber may consist of an SiO2 : GeO2 core with a pure Si0 cladding. Glass fibers can be made with a wide range of refra ...
... refractive index. Pure silica has a refractive index of 1.45 at 1 mm and B2O3 can be used to lower the refractive index, whilst other additives such as GeO2 raise it. Thus a typical fiber may consist of an SiO2 : GeO2 core with a pure Si0 cladding. Glass fibers can be made with a wide range of refra ...
Nanosecond laser-induced breakdown in pure and - AS
... study we developed a technique for locating the position of the focal waist based on the third harmonic signal generated at the air-fused silica interface. This gives a precise location of the focal position (± 10 µm) which is important in interpreting the damage structure. The surface third harmoni ...
... study we developed a technique for locating the position of the focal waist based on the third harmonic signal generated at the air-fused silica interface. This gives a precise location of the focal position (± 10 µm) which is important in interpreting the damage structure. The surface third harmoni ...
Introduction - Research
... unfavorable method because it forces cells to contract at a set length, which maybe more or less than the contraction range of the individual cell. Our design team, with the help of Dr. Franz Baudenbacher and several graduate students, is hoping to develop a less complicated and more accurate method ...
... unfavorable method because it forces cells to contract at a set length, which maybe more or less than the contraction range of the individual cell. Our design team, with the help of Dr. Franz Baudenbacher and several graduate students, is hoping to develop a less complicated and more accurate method ...
The Physics of the Optical Fibre
... The telescope will look at how the atmosphere is effecting the artificial star second by second and adjust the telescope's mirror to compensate. This should allow astronomers to capture pictures of astronomical objects of a quality previously only obtainable from the Hubble Space Telescope. The opti ...
... The telescope will look at how the atmosphere is effecting the artificial star second by second and adjust the telescope's mirror to compensate. This should allow astronomers to capture pictures of astronomical objects of a quality previously only obtainable from the Hubble Space Telescope. The opti ...
Confocal microscopy
Confocal microscopy is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. It enables the reconstruction of three-dimensional structures from the obtained images. This technique has gained popularity in the scientific and industrial communities and typical applications are in life sciences, semiconductor inspection and materials science.