Microwave frequency generation using a dual
... Dual-frequency lasers have many potential applications such as soliton pulse train generation [1], heterodyne interferometry for distance measurement [2], and optical sensing [3]. Dual-mode lasers are also of interest for their potential in generating radio-frequency signals for microwave applicatio ...
... Dual-frequency lasers have many potential applications such as soliton pulse train generation [1], heterodyne interferometry for distance measurement [2], and optical sensing [3]. Dual-mode lasers are also of interest for their potential in generating radio-frequency signals for microwave applicatio ...
kokhan1
... Spectra 0 ( ) depend on the substance in question. They can be measured or found from quantum mechanical calculations. ...
... Spectra 0 ( ) depend on the substance in question. They can be measured or found from quantum mechanical calculations. ...
RA19 - Laser Lift-Off Techniques
... exceed optical DOF, some means of part mapping or autofocus may be necessary. To minimize damage due to transients and temperature gradients, some workers have used background heating, though it is not universal Single device area is typically in the range 0.3-2mm, thus requiring on-target energies ...
... exceed optical DOF, some means of part mapping or autofocus may be necessary. To minimize damage due to transients and temperature gradients, some workers have used background heating, though it is not universal Single device area is typically in the range 0.3-2mm, thus requiring on-target energies ...
Catching the wave - Selected Topics in Quantum Electronics, IEEE
... The groups at Bell continued their frantic search and eventually wound up with a number of new lasers including the first gas laser (He–Ne) of Javan’s group. But it was Maiman, working alone, who won the race. In the years which followed, I often thought about Maiman and his work. At Bell Labs, we w ...
... The groups at Bell continued their frantic search and eventually wound up with a number of new lasers including the first gas laser (He–Ne) of Javan’s group. But it was Maiman, working alone, who won the race. In the years which followed, I often thought about Maiman and his work. At Bell Labs, we w ...
Light scattering described in the mode picture
... refractive index) normally increases strongly toward longer spatial wavelengths.3 The description of the effect of a wave-front deformation by a single number such as the TIS or the scattering angle, above which the light is considered as being lost from the original mode, is a relatively poor one a ...
... refractive index) normally increases strongly toward longer spatial wavelengths.3 The description of the effect of a wave-front deformation by a single number such as the TIS or the scattering angle, above which the light is considered as being lost from the original mode, is a relatively poor one a ...
Far-field measurement of ultra-small plasmonic mode volume Shuang Zhang, Yong-Shik Park,
... refractive index of quartz is nsub = 1.45, and the permittivity of gold is described by a Drude model with ε ∞ = 5.7 , ω p = 1.366 ×1016 rad ⋅ s −1 and γ = 9.1× 1013 Hz. The rigorous method yields similar results as the numerical mode volume calculated by the optical force method at small gaps, wher ...
... refractive index of quartz is nsub = 1.45, and the permittivity of gold is described by a Drude model with ε ∞ = 5.7 , ω p = 1.366 ×1016 rad ⋅ s −1 and γ = 9.1× 1013 Hz. The rigorous method yields similar results as the numerical mode volume calculated by the optical force method at small gaps, wher ...
Kursat Sendur 2009 Opex1
... is developed for nano-optical particles when they are illuminated with collimated and focused incident beams. The numerical technique developed in this study requires only the discretization of the nano-optical transducer, rather than the entire structure. Therefore, it results in a fewer number of ...
... is developed for nano-optical particles when they are illuminated with collimated and focused incident beams. The numerical technique developed in this study requires only the discretization of the nano-optical transducer, rather than the entire structure. Therefore, it results in a fewer number of ...
10-GHz Bandwidth RF Spectral Analyzer With MHz Resolution
... gigahertz of bandwidth in battle field environment or (sub)millimeter astronomy shows the growing need in developing processing techniques able to analyze such signals. For instance, radio-frequency (RF) analyzers must have the capability to Fourier analyze multigigahertz (multi-GHz) signals (10 GHz ...
... gigahertz of bandwidth in battle field environment or (sub)millimeter astronomy shows the growing need in developing processing techniques able to analyze such signals. For instance, radio-frequency (RF) analyzers must have the capability to Fourier analyze multigigahertz (multi-GHz) signals (10 GHz ...
Spectrally Efficient OFDM-Transmission over Single-Mode Fiber Using Direct Detection Student Member Member, IEEE
... systems such as cellular-networks, digital-audio broadcasting and digital-video broadcasting [1-2]. Due to its high spectral efficiency and robustness towards channel impairments, such as inter-symbolinterference (ISI), Orthogonal frequency division multiplexing (OFDM) becomes an intriguing candidat ...
... systems such as cellular-networks, digital-audio broadcasting and digital-video broadcasting [1-2]. Due to its high spectral efficiency and robustness towards channel impairments, such as inter-symbolinterference (ISI), Orthogonal frequency division multiplexing (OFDM) becomes an intriguing candidat ...
2 Theory (2 pages)
... theory, a coherent and monochromatic beam is required, so that a laser is used. The beam is split with a beam splitter. The resulting beams should be of equivalent or nearly equivalent intensity. This yields the highest degree of contrast between the fringes in the measurement volume and thus the hi ...
... theory, a coherent and monochromatic beam is required, so that a laser is used. The beam is split with a beam splitter. The resulting beams should be of equivalent or nearly equivalent intensity. This yields the highest degree of contrast between the fringes in the measurement volume and thus the hi ...
Interferometer design for writing Bragg gratings in optical fibers
... The most critical opto-mechanical structure is the interferometer comprising the following four optical components: (1) Phase mask, (2) First grazing mirror, (3) Second grazing mirror, (4) target fiber. Figure 2 shows these key components and defines an x,y,z coordinate system for the BGW with the y ...
... The most critical opto-mechanical structure is the interferometer comprising the following four optical components: (1) Phase mask, (2) First grazing mirror, (3) Second grazing mirror, (4) target fiber. Figure 2 shows these key components and defines an x,y,z coordinate system for the BGW with the y ...
1. Introduction - About the journal
... currently used optical wavelengths. The most important effects of atmospheric turbulence on the laser beam are: phase-front distortion, beam broadening, beam wander and redistribution of the intensity within the beam. The temporary redistribution of the intensity, known as scintillation, results fro ...
... currently used optical wavelengths. The most important effects of atmospheric turbulence on the laser beam are: phase-front distortion, beam broadening, beam wander and redistribution of the intensity within the beam. The temporary redistribution of the intensity, known as scintillation, results fro ...
High-speed spectral-domain optical coherence tomography at 1.3
... impractical due to insufficient sensitivity. Optical tomographic imaging using frequency domain ranging has recently attracted significant interest because of its superior sensitivity relative to time domain ranging [3-8]. As a result of its signal-to-noise ratio (SNR) advantage, frequency domain im ...
... impractical due to insufficient sensitivity. Optical tomographic imaging using frequency domain ranging has recently attracted significant interest because of its superior sensitivity relative to time domain ranging [3-8]. As a result of its signal-to-noise ratio (SNR) advantage, frequency domain im ...
Optical sampling technique applied to high resolution
... The possibility to use the optical sampling technique for distributed fibre measurements at high spatial resolution has been demonstrated. This technique can offer an attractive solution to circumvent the problem of fast electronics that is not widely available, expensive and limited in performance ...
... The possibility to use the optical sampling technique for distributed fibre measurements at high spatial resolution has been demonstrated. This technique can offer an attractive solution to circumvent the problem of fast electronics that is not widely available, expensive and limited in performance ...
PDF only
... implied by transverse AM. In our setup a beam of light is first laterally split in two parts with opposite spin direction (σ = -1, left-circularly polarized and σ = +1, right-circularly polarized) and then tightly focused by a microscope objective (see Fig. 2 A and B). This yields to the occurrence o ...
... implied by transverse AM. In our setup a beam of light is first laterally split in two parts with opposite spin direction (σ = -1, left-circularly polarized and σ = +1, right-circularly polarized) and then tightly focused by a microscope objective (see Fig. 2 A and B). This yields to the occurrence o ...
Laser-scattering
... Let’s start with the conventional design: Here a sufficiently broad, parallel laser beam is generated, in which then the measuring cell with the scattering particles is inserted. Between the measurement cell and the detector the Fourier lens is positioned. With this alignment the focal distance of t ...
... Let’s start with the conventional design: Here a sufficiently broad, parallel laser beam is generated, in which then the measuring cell with the scattering particles is inserted. Between the measurement cell and the detector the Fourier lens is positioned. With this alignment the focal distance of t ...
Laser and its applications
... is known as the core and the surrounding region the cladding. Usually the core and cladding refractive indices differ by only a few percent. Typical dimensions for such a fiber are a core diameter of 200 mm with a combined core and cladding diameter of 250 mm. When made from glass or silica the fibe ...
... is known as the core and the surrounding region the cladding. Usually the core and cladding refractive indices differ by only a few percent. Typical dimensions for such a fiber are a core diameter of 200 mm with a combined core and cladding diameter of 250 mm. When made from glass or silica the fibe ...
Powerpoint template for scientific posters (Swarthmore College)
... Fade margin takes into consideration the characteristics of the FSO system (total transmitted power, total receiver aperture area, receiver sensitivity, coupling losses) and the enviroment where the link is to be deployed (geometric path loss, loss through windowpanes, beam misalignment loss). A sam ...
... Fade margin takes into consideration the characteristics of the FSO system (total transmitted power, total receiver aperture area, receiver sensitivity, coupling losses) and the enviroment where the link is to be deployed (geometric path loss, loss through windowpanes, beam misalignment loss). A sam ...
The 9th Asia Pacific
... fibers and integrated waveguides to increase third order non-linear effects as SPM and FWM for optical communication functions such as demultiplexing. The same kinds of microlenses with very small mode field diameters have also been used to characterize porous MR based sensors sensitive to refractiv ...
... fibers and integrated waveguides to increase third order non-linear effects as SPM and FWM for optical communication functions such as demultiplexing. The same kinds of microlenses with very small mode field diameters have also been used to characterize porous MR based sensors sensitive to refractiv ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.