A Laser Coupler for DVD/CD Playback
... then used to form the 650nm stripe, then ion implantation was used to form the 780nm stripe. An extremely high accuracy of the emitting position between the 650nm and the 780nm element was obtained. In the etching process for forming the 650nm stripe, the pcap layer was removed at the side of the 65 ...
... then used to form the 650nm stripe, then ion implantation was used to form the 780nm stripe. An extremely high accuracy of the emitting position between the 650nm and the 780nm element was obtained. In the etching process for forming the 650nm stripe, the pcap layer was removed at the side of the 65 ...
Time-resolved coherent anti-Stokes Raman scattering microscopy: Imaging based on Raman free induction decay
... A time-resolved coherent anti-Stokes Raman scattering 共CARS兲 microscope allows three-dimensional imaging based on Raman free induction decay of molecular vibration with no requirement for labeling of the sample with natural or artificial fluorophores. A major benefit of the technique is the capabili ...
... A time-resolved coherent anti-Stokes Raman scattering 共CARS兲 microscope allows three-dimensional imaging based on Raman free induction decay of molecular vibration with no requirement for labeling of the sample with natural or artificial fluorophores. A major benefit of the technique is the capabili ...
Flow Cytometry and Sorting, Part 1
... have very sharp cutons and cutoffs since there will be many orders of magnitude more scattered laser light than fluorescence Can specify wavelengths that filter must reject to certain tolerance (e.g., reject 488 nm light at 10-6 level: only 0.0001% of incident light at 488 nm gets through) ...
... have very sharp cutons and cutoffs since there will be many orders of magnitude more scattered laser light than fluorescence Can specify wavelengths that filter must reject to certain tolerance (e.g., reject 488 nm light at 10-6 level: only 0.0001% of incident light at 488 nm gets through) ...
Optical properties of silicon at low temperatures
... • for p-polarised light there is no reflection on a surface if the angle of incident is the brewster angle • so all light can be used for the measurement without losses because of reflected light • scattered light causes problems inside a cryostat ...
... • for p-polarised light there is no reflection on a surface if the angle of incident is the brewster angle • so all light can be used for the measurement without losses because of reflected light • scattered light causes problems inside a cryostat ...
On-chip gas detection in silicon optical microcavities
... room temperature and atmospheric pressure. A resonance shift of approximately 0.2 nm is clearly visible. To confirm that the shift in resonance is due entirely to the difference in gasses we repeated the measurement 3 times alternating between air and acetylene. We calculate an average resonance shi ...
... room temperature and atmospheric pressure. A resonance shift of approximately 0.2 nm is clearly visible. To confirm that the shift in resonance is due entirely to the difference in gasses we repeated the measurement 3 times alternating between air and acetylene. We calculate an average resonance shi ...
The mechanism for continuum polarization in laser induced
... asymmetric profiles in both P and α0. There is a hint of such asymmetry in the fs data as well, although the poorer signal/noise ratio makes this effect more difficult to discern. In all the experiments described so far, the laser was incident at an oblique angle 30° from the normal, and the emission ...
... asymmetric profiles in both P and α0. There is a hint of such asymmetry in the fs data as well, although the poorer signal/noise ratio makes this effect more difficult to discern. In all the experiments described so far, the laser was incident at an oblique angle 30° from the normal, and the emission ...
measuring
... photopic spectral luminous efficiency function. For X, we can pair luminous flux (lm) and spectral power (W/nm), luminous intensity (cd) and spectral radiant intensity (W/sr-nm), illuminance (lux) and spectral irradiance (W/m2-nm), or luminance (cd/m2) and spectral radiance (W/m2-sr-nm). The constan ...
... photopic spectral luminous efficiency function. For X, we can pair luminous flux (lm) and spectral power (W/nm), luminous intensity (cd) and spectral radiant intensity (W/sr-nm), illuminance (lux) and spectral irradiance (W/m2-nm), or luminance (cd/m2) and spectral radiance (W/m2-sr-nm). The constan ...
Slide 1
... This procedure makes the measurement method less sensitive to environmental changes Question Why does the use of reference laser make the wavelength meter less sensitive to environmental changes? Reference lasers Helium-neon (HeNe) lasers emitting at 632.9907 nm are often used as wavelength referenc ...
... This procedure makes the measurement method less sensitive to environmental changes Question Why does the use of reference laser make the wavelength meter less sensitive to environmental changes? Reference lasers Helium-neon (HeNe) lasers emitting at 632.9907 nm are often used as wavelength referenc ...
Associate Professor Shien
... PCF will induce loss because the effects of bending or stress. In such conditions, light will scatter out from fiber core and then attenuated itself. Unlike a single mode fiber (SMF), PCF have some advantages over a SMF such its dynamic controlled dispersion, novel attenuation characteristic and sma ...
... PCF will induce loss because the effects of bending or stress. In such conditions, light will scatter out from fiber core and then attenuated itself. Unlike a single mode fiber (SMF), PCF have some advantages over a SMF such its dynamic controlled dispersion, novel attenuation characteristic and sma ...
Experimental Competition
... frequency ranges over which the properties of the “image” are drastically different. To describe these observations complete the table on the answer form by adding a row to this table for each such frequency range and fill it in by using the appropriate notations explained on that page. ...
... frequency ranges over which the properties of the “image” are drastically different. To describe these observations complete the table on the answer form by adding a row to this table for each such frequency range and fill it in by using the appropriate notations explained on that page. ...
Controllable optical negative refraction and
... through a perturbative medium12 . Realization of phase conjugation is based on degenerate four-wave mixing, in which two counterpropagating beams are used to write a holographic grating into a nonlinear crystal, while a third beam is diffracted in a direction exactly opposite to the incident wave. T ...
... through a perturbative medium12 . Realization of phase conjugation is based on degenerate four-wave mixing, in which two counterpropagating beams are used to write a holographic grating into a nonlinear crystal, while a third beam is diffracted in a direction exactly opposite to the incident wave. T ...
Lecture 21: Polarisation of light and other waves
... oscillating, but in such a way that the total is constant and the direction describes a clockwise circle. This is Right-Handed (RH) polarised light. If the V component lags by 90◦ this gives Left Handed (LH) polarised light, with the E field going round anticlockwise. If 45◦ plane polarised light is ...
... oscillating, but in such a way that the total is constant and the direction describes a clockwise circle. This is Right-Handed (RH) polarised light. If the V component lags by 90◦ this gives Left Handed (LH) polarised light, with the E field going round anticlockwise. If 45◦ plane polarised light is ...
Microsoft Word Format - University of Toronto Physics
... track. If necessary adjust the mirror but not adjust the laser during this part of the alignment process. 3. Tilt the mirror holder until the beam passes through the same spot above the alignment bar everywhere along the track. Note that the entire beam does NOT have to pass through the pinhole. 4. ...
... track. If necessary adjust the mirror but not adjust the laser during this part of the alignment process. 3. Tilt the mirror holder until the beam passes through the same spot above the alignment bar everywhere along the track. Note that the entire beam does NOT have to pass through the pinhole. 4. ...
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... Taking into account that ratio l 0 / j for the given scattering spheres does not depend on their concentration and is determined only by scattering properties of the single particle [l;( s f ) 21 , as well as j ;l and l 0 /l52k 0 2 / ^ q̄ 2 & , where s is the scattering cross-section of the single p ...
... Taking into account that ratio l 0 / j for the given scattering spheres does not depend on their concentration and is determined only by scattering properties of the single particle [l;( s f ) 21 , as well as j ;l and l 0 /l52k 0 2 / ^ q̄ 2 & , where s is the scattering cross-section of the single p ...
Optical frequency standard
... Quite generally, frequency standards with a high oscillation frequency profit from a better stability than those with lower oscillation frequencies. Although optical sources are used for some functionalities (optical pumping, laser cooling of atoms), all present primary and secondary frequency stand ...
... Quite generally, frequency standards with a high oscillation frequency profit from a better stability than those with lower oscillation frequencies. Although optical sources are used for some functionalities (optical pumping, laser cooling of atoms), all present primary and secondary frequency stand ...
Experimental Demonstration of a 2
... Tapped-delay-lines are a fundamental building block for many data signal processing functions, including correlation, equalization, filtering, and almost any element that provides a transfer function [1]. Moreover, it may be beneficial to enable an optical tapped-delay-line (OTDL) so that: (i) certa ...
... Tapped-delay-lines are a fundamental building block for many data signal processing functions, including correlation, equalization, filtering, and almost any element that provides a transfer function [1]. Moreover, it may be beneficial to enable an optical tapped-delay-line (OTDL) so that: (i) certa ...
EEE440 Modern Communication Systems Optical Fibre
... At the right-hand mirror, the wave experiences a 180° phase shift and continues to propagate. At the left-hand mirror, this wave again has the same phase shift and continues to travel yielding a stable pattern called a standing wave ...
... At the right-hand mirror, the wave experiences a 180° phase shift and continues to propagate. At the left-hand mirror, this wave again has the same phase shift and continues to travel yielding a stable pattern called a standing wave ...
Optical System design
... made by changing many design parameters simultaneously. This requires a true non-linear optimisation algorithm. The software uses damped least squares as the basic optimisation method, but with several enhancements [4], such as an extended line search option. The merit function is powerful and flexi ...
... made by changing many design parameters simultaneously. This requires a true non-linear optimisation algorithm. The software uses damped least squares as the basic optimisation method, but with several enhancements [4], such as an extended line search option. The merit function is powerful and flexi ...
Imaging with Terahertz Pulses
... metric as a function of thickness identifies the predicted material thickness and the complex refractive index. We investigate the limits of our method with respect to the minimum measurable refractive index and compare our results to literature data for several different materials. For each pixel, ...
... metric as a function of thickness identifies the predicted material thickness and the complex refractive index. We investigate the limits of our method with respect to the minimum measurable refractive index and compare our results to literature data for several different materials. For each pixel, ...
LABORATORY TECHNIQUES
... the interference pattern. The angle should be chosen such that a complete interference pattern can be seen. Adjust the position of the collimating lens until the desired interference pattern is obtained (uniform central area for parallel flat, largest fringe pattern for wedge flat). Collimating with ...
... the interference pattern. The angle should be chosen such that a complete interference pattern can be seen. Adjust the position of the collimating lens until the desired interference pattern is obtained (uniform central area for parallel flat, largest fringe pattern for wedge flat). Collimating with ...
