5 - www2
... Here the coordinate Q = Q0 exp(iωvibr ·t) describes the internuclear displacement. Inserting α into μ shows that the scattered radiation now also includes Raman shifted frequencies with ω0 ± ωvibr. The intensity of these lines depends on ∂α/∂Q. Resonance Raman scattering. In the Raman (R) scattering ...
... Here the coordinate Q = Q0 exp(iωvibr ·t) describes the internuclear displacement. Inserting α into μ shows that the scattered radiation now also includes Raman shifted frequencies with ω0 ± ωvibr. The intensity of these lines depends on ∂α/∂Q. Resonance Raman scattering. In the Raman (R) scattering ...
Acceleration of femtosecond pulses to superluminal velocities by
... of a converging perfect spherical wave. This phase difference discovered by Gouy is called phase anomaly. The predictions of the theoretical treatments have been verified by experiments both with light and with microwaves [2—5]. For microwaves, the phase fronts can be measured directly [4, 5]. The e ...
... of a converging perfect spherical wave. This phase difference discovered by Gouy is called phase anomaly. The predictions of the theoretical treatments have been verified by experiments both with light and with microwaves [2—5]. For microwaves, the phase fronts can be measured directly [4, 5]. The e ...
Confocal Microscopy - Emory Physics
... with a pinhole is placed at the other side of the lens system, then all of the light from the dark point will pass through the pinhole.a Note that at the location of the screen the light blue point is out of focus. Moreover, most of the light will get blocked by the screen, resulting in an image of ...
... with a pinhole is placed at the other side of the lens system, then all of the light from the dark point will pass through the pinhole.a Note that at the location of the screen the light blue point is out of focus. Moreover, most of the light will get blocked by the screen, resulting in an image of ...
Wei Zhang, Hainian Han, Yanying Zhao, Qiang Du, Zhiyi Wei. A
... have been reported [4-7]. At present, as the bridge of the microwave and optical frequency standard, optical frequency combs based on femtosecond lasers have been widely used in frequency metrology and optical frequency synthesizing. Up to now, most frequency combs are based on the technology of sel ...
... have been reported [4-7]. At present, as the bridge of the microwave and optical frequency standard, optical frequency combs based on femtosecond lasers have been widely used in frequency metrology and optical frequency synthesizing. Up to now, most frequency combs are based on the technology of sel ...
Distributed Rayleigh scatter dynamic strain sensing above
... encompass the sensor length. Thus taking a Fourier Transform of and searching for a spectral shift using a cross correlation between measurement and reference segments of Rayleigh scatter complex spectra as done with OFDR strain sensing will not produce a useful result, except for a very small s ...
... encompass the sensor length. Thus taking a Fourier Transform of and searching for a spectral shift using a cross correlation between measurement and reference segments of Rayleigh scatter complex spectra as done with OFDR strain sensing will not produce a useful result, except for a very small s ...
Low threshold edge emitting polymer distributed feedback laser based on
... spacing in the ⌫M symmetry direction of the Brillouin zone of 189 nm. The latter was employed to provide feedback at 630 nm via a first order diffraction process. The device operated on two longitudinal modes, which were situated on the band-edge near the M symmetry point. The two modes had threshol ...
... spacing in the ⌫M symmetry direction of the Brillouin zone of 189 nm. The latter was employed to provide feedback at 630 nm via a first order diffraction process. The device operated on two longitudinal modes, which were situated on the band-edge near the M symmetry point. The two modes had threshol ...
Frequency-comb-referenced two-wavelength source
... loops. The stability of the laser frequency separation is determined entirely by the relative stability of the frequency reference used to control the repetition rate of the fs laser. To cancel the frequency drift of the comb, either the comb can be self-referenced6 or one of the lasers can be locke ...
... loops. The stability of the laser frequency separation is determined entirely by the relative stability of the frequency reference used to control the repetition rate of the fs laser. To cancel the frequency drift of the comb, either the comb can be self-referenced6 or one of the lasers can be locke ...
J Comp Physiol A (1993) 173:143-149
... method. A piece of cuticle containing the lenses of both lateral ocelli was dissected out of the head capsule and transferred to a closed chamber consisting of a plastic ring between two cover slips. Two small strips of 0.15 mm glass were glued at a distance of 1 mm to the underside of the upper cov ...
... method. A piece of cuticle containing the lenses of both lateral ocelli was dissected out of the head capsule and transferred to a closed chamber consisting of a plastic ring between two cover slips. Two small strips of 0.15 mm glass were glued at a distance of 1 mm to the underside of the upper cov ...
219_cha.pdf
... proposed here adopts dual index immersion way of contour generation. Depth contour interval up to a minimum of 0.12 mm could be achieved without making the interference phase fringes over crowded. 1. INTRODUCTION Three dimensional shape measurements by non-contact optical methods have been extensive ...
... proposed here adopts dual index immersion way of contour generation. Depth contour interval up to a minimum of 0.12 mm could be achieved without making the interference phase fringes over crowded. 1. INTRODUCTION Three dimensional shape measurements by non-contact optical methods have been extensive ...
The Equation of Number the Total Internal of Reflection Angles
... applied for a Danish patent on fiber-optic imaging.However, the Danish patent office denied his application, citing the Baird and Hansell patent, and Moller Hansen was unable to interest companies in his invention. Nothing more was reported on fiber bundles until 1954, when Abraham van Heel of the T ...
... applied for a Danish patent on fiber-optic imaging.However, the Danish patent office denied his application, citing the Baird and Hansell patent, and Moller Hansen was unable to interest companies in his invention. Nothing more was reported on fiber bundles until 1954, when Abraham van Heel of the T ...
SHS_OH_flame_ApplOpt_revision_RJB
... approximately one degree (half angle). The light expands over the McKenna burner which burns a stoichiometric mixture of ethylene and air, producing significant amounts of OH. The light is then sent through a telescope composed of an f = -125 mm lens followed by a f = 200 mm lens. The telescope deli ...
... approximately one degree (half angle). The light expands over the McKenna burner which burns a stoichiometric mixture of ethylene and air, producing significant amounts of OH. The light is then sent through a telescope composed of an f = -125 mm lens followed by a f = 200 mm lens. The telescope deli ...
Phonon Laser Action in a Tunable Two-Level System
... of the parametric instability [28] of cavity optomechanics [16] will be detailed elsewhere. The present cavity design also enables spectrally selective and tunable detection of phonons through absorption (red pump) by the two-level system. Analysis of the response shows that thermal phonons set a ba ...
... of the parametric instability [28] of cavity optomechanics [16] will be detailed elsewhere. The present cavity design also enables spectrally selective and tunable detection of phonons through absorption (red pump) by the two-level system. Analysis of the response shows that thermal phonons set a ba ...
Kuhnke Laser Shutter DS200X8 - Kendrion Kuhnke Automation GmbH
... DS200X8 can be connected to a water-based cooling system. In ...
... DS200X8 can be connected to a water-based cooling system. In ...
Light Microscopy
... The objective is the most crucial optical component in a microscope. Many different types of objectives can be used depending on the application and, not least, the amount of money available. Depending on the aberration corrections♦, ...
... The objective is the most crucial optical component in a microscope. Many different types of objectives can be used depending on the application and, not least, the amount of money available. Depending on the aberration corrections♦, ...
Tuneable, stabilised diode lasers for compact atomic frequency
... tolerated, but the physics package needs to remain the simplest possible. Furthermore, automated identification of the correct line to lock to is much simpler in the Doppler case. For a systematic and quantitative comparison of the two schemes, we have performed relative frequency stability measureme ...
... tolerated, but the physics package needs to remain the simplest possible. Furthermore, automated identification of the correct line to lock to is much simpler in the Doppler case. For a systematic and quantitative comparison of the two schemes, we have performed relative frequency stability measureme ...
Panoramic Imaging with Horizontal Stereo - CS
... stereo pair provides a stereo sensation up to a full 360 degrees. A stereo panorama cannot be photographed by two omnidirectional cameras from two viewpoints. It is normally constructed by mosaicing together images from a rotating stereo pair, or from a single moving camera. Capturing stereo panoram ...
... stereo pair provides a stereo sensation up to a full 360 degrees. A stereo panorama cannot be photographed by two omnidirectional cameras from two viewpoints. It is normally constructed by mosaicing together images from a rotating stereo pair, or from a single moving camera. Capturing stereo panoram ...
3.4-?m ZGP RISTRA nanosecond - AS
... optical cavities NF provides a measure of the number of Fresnel zones and indicates the strength of diffractive coupling, so that small NF results in good beam quality, while large NF tends to result in very poor beam quality. For example, with the RISTRA’s physical length of ~109 mm NF can exceed ...
... optical cavities NF provides a measure of the number of Fresnel zones and indicates the strength of diffractive coupling, so that small NF results in good beam quality, while large NF tends to result in very poor beam quality. For example, with the RISTRA’s physical length of ~109 mm NF can exceed ...
wavelength dependence of the light-induced index
... fi. Irradiation of the fiber changes the core index and thus changes concomitantly the propagation constant for the HE,, fiber mode and the optical phase of light propagating through the irradiated arm of the MachZehnder interferometer. If Al, is the change in the propagation constant, and L is the ...
... fi. Irradiation of the fiber changes the core index and thus changes concomitantly the propagation constant for the HE,, fiber mode and the optical phase of light propagating through the irradiated arm of the MachZehnder interferometer. If Al, is the change in the propagation constant, and L is the ...