The Time-Shift Technique for Measurement of Size and Velocity of
... interpreted according to various scattering orders by employing a Debye series [4] expansion of the Mie [5] scattering functions or using a geometric optics [6] approach to the scattering field. Effectively a different measurement volume is realized for each scattering order and each measurement vol ...
... interpreted according to various scattering orders by employing a Debye series [4] expansion of the Mie [5] scattering functions or using a geometric optics [6] approach to the scattering field. Effectively a different measurement volume is realized for each scattering order and each measurement vol ...
Light Sources * II The Laser
... of the resonant wavelengths in a FabryPerot cavity is the modal separation. If L is the distance between the reflecting mirrors & the refractive index is n, then at a peak wavelength λ the MS is given by Modal Separation ...
... of the resonant wavelengths in a FabryPerot cavity is the modal separation. If L is the distance between the reflecting mirrors & the refractive index is n, then at a peak wavelength λ the MS is given by Modal Separation ...
Ultrafast and High Resolution Crack Detection Using Fully
... MHz/µ is obtained, which proves the high sensitivity of this technique in decoding variations in strain. The high strain sensitivity and high spatial resolution of the proposed interrogation technique provide sufficient motivation to explore the capability of LCFBGs in crack detection. In a second e ...
... MHz/µ is obtained, which proves the high sensitivity of this technique in decoding variations in strain. The high strain sensitivity and high spatial resolution of the proposed interrogation technique provide sufficient motivation to explore the capability of LCFBGs in crack detection. In a second e ...
Green's function formulation for third-harmonic generation microscopy
... The combination of nonlinear optical spectroscopy with scanning microscopy generates innovative tools such as second-harmonic generation microscopy,1–3 coherent antiStokes Raman scattering (CARS) microscopy,4–6 and third-harmonic generation (THG) microscopy7–12 for biology and materials science. THG ...
... The combination of nonlinear optical spectroscopy with scanning microscopy generates innovative tools such as second-harmonic generation microscopy,1–3 coherent antiStokes Raman scattering (CARS) microscopy,4–6 and third-harmonic generation (THG) microscopy7–12 for biology and materials science. THG ...
Optical generation and detection of elastic waves in solids
... in a liquid phase. This effect greatly increases the normal force. At the end of the laser pulse, ablation will continue over a long time, until the surface temperature goes down to the ablation threshold. The directivity patterns of the point normal force source can be computed by the method of Mil ...
... in a liquid phase. This effect greatly increases the normal force. At the end of the laser pulse, ablation will continue over a long time, until the surface temperature goes down to the ablation threshold. The directivity patterns of the point normal force source can be computed by the method of Mil ...
Untitled
... spectrum to be used for material identification and analysis. Raman spectroscopy is used to analyze a wide range of materials, including gases, liquids, and solids. Highly complex materials such as biological organisms and human tissue can also be analyzed by Raman spectroscopy. • For solid material ...
... spectrum to be used for material identification and analysis. Raman spectroscopy is used to analyze a wide range of materials, including gases, liquids, and solids. Highly complex materials such as biological organisms and human tissue can also be analyzed by Raman spectroscopy. • For solid material ...
Experimental observation of the far field diffraction patterns of
... A large number of spatial effects can be observed when an intense light beam interacts with a nonlinear medium [1-7]. In particular, concentric ring intensity distribution pattern can be induced in the far field of a beam after propagation through a nonlinear material. This effect of spatial phase-m ...
... A large number of spatial effects can be observed when an intense light beam interacts with a nonlinear medium [1-7]. In particular, concentric ring intensity distribution pattern can be induced in the far field of a beam after propagation through a nonlinear material. This effect of spatial phase-m ...
External-cavity diode lasers provide absolute references for WDM
... lengths are optically separated and indi- to check the wavelength performance vidually detected. The transmission of key components such as lasers, filcapacity of an existing fiber link can, ters, and fiber gratings. Wavelength therefore, be instantly increased by a meters, spectrometers, and spectr ...
... lengths are optically separated and indi- to check the wavelength performance vidually detected. The transmission of key components such as lasers, filcapacity of an existing fiber link can, ters, and fiber gratings. Wavelength therefore, be instantly increased by a meters, spectrometers, and spectr ...
Efficient electromagnetically induced transparency COMMUNICATIONS
... laser field intensity and temperature dependence of the EIT. Efficient EIT in this crystal opens potential applications such as efficient high-resolution image processing and signal processing, and optical data storage as well as lasers without population inversion in solids. 0 1997 Elsevier Science ...
... laser field intensity and temperature dependence of the EIT. Efficient EIT in this crystal opens potential applications such as efficient high-resolution image processing and signal processing, and optical data storage as well as lasers without population inversion in solids. 0 1997 Elsevier Science ...
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 ...
The radiated fields of the fundamental mode of photonic crystal fibers
... The calculations of the modal reflectivity from the fiber end-facet is performed with a threedimensional frequency domain modal method relying on Fourier expansion technique [9, 10]. In brief, the Fourier expansion method relies on an analytical integration of Maxwells equations along one direction ...
... The calculations of the modal reflectivity from the fiber end-facet is performed with a threedimensional frequency domain modal method relying on Fourier expansion technique [9, 10]. In brief, the Fourier expansion method relies on an analytical integration of Maxwells equations along one direction ...
lecture 3 Introduction to Laser
... Mode-locking is a technique in by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12s) or femtoseconds (10−15s). Need for Mode Locking When laser is oscillating with various modes and if modes are uncorrelated The output intensity i.e ...
... Mode-locking is a technique in by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12s) or femtoseconds (10−15s). Need for Mode Locking When laser is oscillating with various modes and if modes are uncorrelated The output intensity i.e ...
Multi-photon absorption and third-order
... The n2 can be obtained by analyzing closed-aperture Z-scan measurements [14], where the transmitted light through silicon sample is filtered by an aperture, with a transmittance of 40%. Figure 2 shows selected Z-scan results for Si and SiO2 reference samples: Fig. 2(a) and (b) show the normalized cl ...
... The n2 can be obtained by analyzing closed-aperture Z-scan measurements [14], where the transmitted light through silicon sample is filtered by an aperture, with a transmittance of 40%. Figure 2 shows selected Z-scan results for Si and SiO2 reference samples: Fig. 2(a) and (b) show the normalized cl ...
Sample pages 1 PDF
... Figure 2–1 shows a schematic of the STEM optical configuration. A series of lenses focuses a beam to form a small spot, or probe, incident upon a thin, electron-transparent sample. Except for the final focusing lens, which is referred to as the objective, the other pre-sample lenses are referred to ...
... Figure 2–1 shows a schematic of the STEM optical configuration. A series of lenses focuses a beam to form a small spot, or probe, incident upon a thin, electron-transparent sample. Except for the final focusing lens, which is referred to as the objective, the other pre-sample lenses are referred to ...
Microscopes:
... magnification or greater (usually employing an oil immersion lens). Phase –contrast. Several different forms of phase-contrast are available. Conventional phase is advantageous for looking at live semen, as well as semen “fixed” in an appropriate liquid fixative (e.g. Formal-saline or PBS-Gluteralde ...
... magnification or greater (usually employing an oil immersion lens). Phase –contrast. Several different forms of phase-contrast are available. Conventional phase is advantageous for looking at live semen, as well as semen “fixed” in an appropriate liquid fixative (e.g. Formal-saline or PBS-Gluteralde ...
Phase contrast microscopy (PCM) represents a major breakthrough
... in enhancing contrast than the dark field method. Instead of removing the unscattered light completely, in phase contrast some DC field is maintained, but is placed in quadrature (/2 out of phase) with the scattered component. Perhaps an entertaining analogy can be drawn between phase contrast ad m ...
... in enhancing contrast than the dark field method. Instead of removing the unscattered light completely, in phase contrast some DC field is maintained, but is placed in quadrature (/2 out of phase) with the scattered component. Perhaps an entertaining analogy can be drawn between phase contrast ad m ...
Experimental demonstration of low-loss optical waveguiding at deep sub-wavelength scales ARTICLE
... hotonics has become the key driver in global data communications. The ever growing demand for higher data bandwidth and lower power consumption of photonic devices1,2 has set a roadmap for reducing the physical photonic component size down to the nanoscale beyond the diffraction limit of light, with ...
... hotonics has become the key driver in global data communications. The ever growing demand for higher data bandwidth and lower power consumption of photonic devices1,2 has set a roadmap for reducing the physical photonic component size down to the nanoscale beyond the diffraction limit of light, with ...
The Research of Near-Infrared Electro-Optics
... Equation (3) represents a fundamental advantage of both edge modulated pulses with natural samplings. The harmonic interference (the second term in equation (1)) is completely suppressed, and all the even order sidebands of the modulated signal around the carrier frequency are also eliminated. This ...
... Equation (3) represents a fundamental advantage of both edge modulated pulses with natural samplings. The harmonic interference (the second term in equation (1)) is completely suppressed, and all the even order sidebands of the modulated signal around the carrier frequency are also eliminated. This ...
Enhanced visualization of choroidal vessels using ultrahigh
... bandwidth (9 nm loss in ~ 40 min), as well as an even slower power loss at the fiber output. Free space resolution of 3.5 µm x 4 µm (lateral x axial), corresponding to 2.5 µm x 3 µm in tissue and 98 dB sensitivity at 2 mW incident power was achieved by interfacing the PCF based source to the OCT sy ...
... bandwidth (9 nm loss in ~ 40 min), as well as an even slower power loss at the fiber output. Free space resolution of 3.5 µm x 4 µm (lateral x axial), corresponding to 2.5 µm x 3 µm in tissue and 98 dB sensitivity at 2 mW incident power was achieved by interfacing the PCF based source to the OCT sy ...
Conference title, upper and lower case, bolded, 18 point type
... bands. This is not surprising, because the vibrational SRS gain is about 2.5 times of the rotational SRS gain if the pump laser is linearly polarized [6,8]. As the transmission losses at Stokes wavelengths are much lower than the Raman gain γgIp, both the spontaneous vibrational and rotational Raman ...
... bands. This is not surprising, because the vibrational SRS gain is about 2.5 times of the rotational SRS gain if the pump laser is linearly polarized [6,8]. As the transmission losses at Stokes wavelengths are much lower than the Raman gain γgIp, both the spontaneous vibrational and rotational Raman ...
May2016
... a) Describe construction and working of He-NeLASER ? b) A light ray enters from air to fiber. The refractive index of air is 1.0 . The fiber has refractive index of core is equal to 1.5 and that of cladding is 1.48 .Find the critical angle , the fractional refractive index the acceptance angle and n ...
... a) Describe construction and working of He-NeLASER ? b) A light ray enters from air to fiber. The refractive index of air is 1.0 . The fiber has refractive index of core is equal to 1.5 and that of cladding is 1.48 .Find the critical angle , the fractional refractive index the acceptance angle and n ...
- Europhysics News
... not yield any magnification. Therefore Gabor suggested to use visible light for the reconstruction after scaling up all dimensions in the ratio of light waves to electron waves, that is, by about a factor 100,000. Although attempts at electron holography were made early on, their success was very li ...
... not yield any magnification. Therefore Gabor suggested to use visible light for the reconstruction after scaling up all dimensions in the ratio of light waves to electron waves, that is, by about a factor 100,000. Although attempts at electron holography were made early on, their success was very li ...
A method for characterizing longitudinal chromatic aberration of
... Ltd, which is single moded at wavelengths greater than 450 nm) is used both to launch light into the microscope system and to detect the confocal signal. The reciprocal geometry is used so as to avoid unnecessary pinhole alignment difficulties. Since we wish to measure the axial response as a functi ...
... Ltd, which is single moded at wavelengths greater than 450 nm) is used both to launch light into the microscope system and to detect the confocal signal. The reciprocal geometry is used so as to avoid unnecessary pinhole alignment difficulties. Since we wish to measure the axial response as a functi ...
Nonlinear laser lithography to control surface properties of stainless
... and time consuming; others involve chemical treatments and weak coatings that are generally evanescent or fragile. Use of methods that only change the surface morphology/topography could be the safer choice if chemical stability is critical for an application, where no surface contaminations are des ...
... and time consuming; others involve chemical treatments and weak coatings that are generally evanescent or fragile. Use of methods that only change the surface morphology/topography could be the safer choice if chemical stability is critical for an application, where no surface contaminations are des ...
MINIATURIZED FLUORESCENCE EXCITATION PLATFORM WITH OPTICAL FIBER FOR BIO-DETECTION CHIPS
... Warren et al. proposed the integration of light source, micro-fluidic channels, filter, and detection on a chip [2]. It’s a quite highly integrated fluorescent microsystem, but the chip is hard to clean or cannot repeat to use. Hubnera et al. proposed a transportable miniaturized fiber-pigtailed mea ...
... Warren et al. proposed the integration of light source, micro-fluidic channels, filter, and detection on a chip [2]. It’s a quite highly integrated fluorescent microsystem, but the chip is hard to clean or cannot repeat to use. Hubnera et al. proposed a transportable miniaturized fiber-pigtailed mea ...