Single-Mode Photonic Band Gap Guidance of Light in Air
... narrow band gaps above the light line in this range of frequencies and for the sample parameters studied. Further comparison with the experimental results will require that the presence of the large air hole be modeled, which will take some time and might require the development of new theoretical t ...
... narrow band gaps above the light line in this range of frequencies and for the sample parameters studied. Further comparison with the experimental results will require that the presence of the large air hole be modeled, which will take some time and might require the development of new theoretical t ...
FABRICATION OF MICROFLUIDIC STRUCTURES BY LASER
... (Figure 1). With adequate pulse energy, ablation can be initiated within the bulk of the material; starting a feature at a surface is not required. The laser pulses graphitize the PDMS at the focus. The formula for PDMS is (CH3)3SiO[Si(CH3)2O]nSi(CH3)3; breakdown products should be dominated by the ...
... (Figure 1). With adequate pulse energy, ablation can be initiated within the bulk of the material; starting a feature at a surface is not required. The laser pulses graphitize the PDMS at the focus. The formula for PDMS is (CH3)3SiO[Si(CH3)2O]nSi(CH3)3; breakdown products should be dominated by the ...
Rapid fabrication of 3D terahertz split ring resonator arrays by novel
... C. M. Soukoulis, T. Koschny, J. Zhou, M. Kafesaki, and E. N. Economou, “Magnetic response of split ring resonators at terahertz frequencies,” Phys. Status Solidi, B Basic Res. 244(4), 1181–1187 (2007). ...
... C. M. Soukoulis, T. Koschny, J. Zhou, M. Kafesaki, and E. N. Economou, “Magnetic response of split ring resonators at terahertz frequencies,” Phys. Status Solidi, B Basic Res. 244(4), 1181–1187 (2007). ...
Dual-color total internal reflection fluorescence cross
... excitation and exploiting the anisotropic emission of the fluorescence generated at the glass-sample interface, much higher CPM can be extracted from the investigated molecules.13 In this work, we present for the first time a dual-color excitation scheme for TIR single-molecule detection, which enab ...
... excitation and exploiting the anisotropic emission of the fluorescence generated at the glass-sample interface, much higher CPM can be extracted from the investigated molecules.13 In this work, we present for the first time a dual-color excitation scheme for TIR single-molecule detection, which enab ...
Laser Doppler Flowmetry - a Theoretical Framework
... generally much smaller than if all scattering angles had equal probability. Any individual photon may on the other hand be scattered multiple times by moving red blood cells, making the total shift larger on an average. An interesting feature of equation 3.1 is that the frequency shift for small sca ...
... generally much smaller than if all scattering angles had equal probability. Any individual photon may on the other hand be scattered multiple times by moving red blood cells, making the total shift larger on an average. An interesting feature of equation 3.1 is that the frequency shift for small sca ...
Holography - Princeton University
... Set up the optics to produce a transmission hologram. From Figures 1 and 2 one can see that you’ll want to set up a reference beam that illuminates the holder for the film. The other beam from the laser should illuminate the object and reflect off of it so that it interferes with the reference beam ...
... Set up the optics to produce a transmission hologram. From Figures 1 and 2 one can see that you’ll want to set up a reference beam that illuminates the holder for the film. The other beam from the laser should illuminate the object and reflect off of it so that it interferes with the reference beam ...
Slide 1
... • Shot (statistical) noise. At EUV, photons have high energy, therefore low counts and high LER due to statistical photon number fluctuation. • Shot noise needs to be compromised with resist sensitivity. High sensitivity (fewer photons per exposure) leads to high shot noise. Roughly LER(dose)-1/2. ...
... • Shot (statistical) noise. At EUV, photons have high energy, therefore low counts and high LER due to statistical photon number fluctuation. • Shot noise needs to be compromised with resist sensitivity. High sensitivity (fewer photons per exposure) leads to high shot noise. Roughly LER(dose)-1/2. ...
GPS General Particle Source
... Elastic scattering including polarization of initial and final photons – The scattered photon direction is perpendicular to the new photon polarization in such a way that the final direction, initial and final polarization are all in one plane ...
... Elastic scattering including polarization of initial and final photons – The scattered photon direction is perpendicular to the new photon polarization in such a way that the final direction, initial and final polarization are all in one plane ...
Interference with monochromatic light
... • multiple beam interference (i.e., very many beams interfere). There are two fundamental methods of generating interfering beams: • division of amplitude, • division of wavefront. No chance to apply two or even many independent sources to get interference patterns which are stable in time; fluctuat ...
... • multiple beam interference (i.e., very many beams interfere). There are two fundamental methods of generating interfering beams: • division of amplitude, • division of wavefront. No chance to apply two or even many independent sources to get interference patterns which are stable in time; fluctuat ...
A Novel Pulse Measurement System by Using Laser Triangulation and a CMOS Image Sensor
... a more complex and accurate arterial pulse measurement system is necessary if more factors are taking into consideration in TCM clinical practice. This paper describes the design of the arterial pulsation measurement (APM) system, and presents the results of tests conducted to verify the pulse measu ...
... a more complex and accurate arterial pulse measurement system is necessary if more factors are taking into consideration in TCM clinical practice. This paper describes the design of the arterial pulsation measurement (APM) system, and presents the results of tests conducted to verify the pulse measu ...
EPH7052 Optical Comm Chapter05 Amplifiers
... • able to operate at the 1300nm and 1550nm wavelengths (simultaneously) • wide bandwidth, up to 100nm • can be readily integrated along with other semiconductors and photonic devices into one monolithic chip called an optoelectronic integrated circuit (OEIC) ...
... • able to operate at the 1300nm and 1550nm wavelengths (simultaneously) • wide bandwidth, up to 100nm • can be readily integrated along with other semiconductors and photonic devices into one monolithic chip called an optoelectronic integrated circuit (OEIC) ...
PDF
... camera. Accordingly, the sidelobes were successfully suppressed thanks to the amplitude apodization, as shown in Fig. 3(d). The measured sidelobe level is about −19 dB. According to the Fourier relation in Eq. (1), each of the interference orders in Fig. 3(d) contains a Gaussian-shaped optical beam ...
... camera. Accordingly, the sidelobes were successfully suppressed thanks to the amplitude apodization, as shown in Fig. 3(d). The measured sidelobe level is about −19 dB. According to the Fourier relation in Eq. (1), each of the interference orders in Fig. 3(d) contains a Gaussian-shaped optical beam ...
Control of plasmon dynamics in coupled plasmonic hybrid mode microcavities
... hybridized energy levels. In spite of the simplicity of twolevel systems, they have become extremely important for quantum optics, nuclear magnetic resonances, and quantum computation. Based on the two-level concept, photonic and nanophononic molecules have been previously proposed and also experime ...
... hybridized energy levels. In spite of the simplicity of twolevel systems, they have become extremely important for quantum optics, nuclear magnetic resonances, and quantum computation. Based on the two-level concept, photonic and nanophononic molecules have been previously proposed and also experime ...
Slide 1
... • A defect can be introduced by disturbing the periodicity sharp peak within the bandgap (sensitive to local RI change) • Small sample volumes • Cutoff wavelength of the PC waveguide was used as the indicator for RI changes • Air holes in the PC fiber can act as a simple fluidic channel • Narrowba ...
... • A defect can be introduced by disturbing the periodicity sharp peak within the bandgap (sensitive to local RI change) • Small sample volumes • Cutoff wavelength of the PC waveguide was used as the indicator for RI changes • Air holes in the PC fiber can act as a simple fluidic channel • Narrowba ...
Optics - Frederiksen
... This Plexiglas tank is supplied with plane parallel sides. One of the corners in the bottom is cut off at a 45° angle to facilitate the entry of light rays. It is ideal for optical experiments with refraction and (total) reflection. To make the light rays visible in the water, a small amount of chal ...
... This Plexiglas tank is supplied with plane parallel sides. One of the corners in the bottom is cut off at a 45° angle to facilitate the entry of light rays. It is ideal for optical experiments with refraction and (total) reflection. To make the light rays visible in the water, a small amount of chal ...
Photonic laser thruster
A photonic laser thruster is an amplified laser thruster that generates thrust directly from the laser photon momentum, rather than laser-heating propellant. The concept of single-bounce laser-pushed lightsails that utilize the photon momentum was first developed in the 1960s, however, its conversion of laser power to thrust is highly inefficient, thus has been considered impractical. Over 50 years, there had been numerous theoretical and experimental efforts to increase the conversion efficiency by recycling photons, bouncing them repetitively between two reflective mirrors in an empty optical cavity, without success. In December 2006, Young Bae successfully solved this problem and demonstrated the conversion efficiency enhancement by a factor of 100 and a photon thrust of 35 micronewtons by putting the laser energizing media between the two mirrors as in typical lasers, and the photonic laser thruster was born. In August 2015, the photonic laser thruster was demonstrated to increase the conversion efficiency enhancement by a factor over 1,000 and to achieve a photon thrust of 3.5 millinewtons at Y.K. Bae Corporation. In addition, Propelling, slowing and stopping of a small satellite, 1U CubeSat, in simulated zero-gravity were demonstrated. The photonic laser thruster was initially developed for use in nanometer precision spacecraft formation, for forming ultralarge space telescopes and radars. The photonic laser thruster is currently developed for high-precision and high-speed maneuver of small spacecraft, such as formation flying, orbit adjustments, drag compensation, and rendezvous and docking. The photonic laser thruster can be used for beaming thrust from a conventional heavy resource vehicle to a more expensive & lightweight mission vehicle, similar to tankers in aerial refueling.The practical usage of the photonic laser thruster for main space propulsion would require extremely high laser powers and overcoming technological challenges in achieving the laser power and fabricating the required optics. Photonic laser thrusters have a very high specific impulse, and can permit spacecraft reach much higher speeds than with conventional rockets, which are limited by the Tsiolkovsky rocket equation. If the photonic laser thruster is scalable for the use in such main space propulsion, multiple photonic laser thrusters can be used to construct a 'photonic railway' that has been proposed as a potential permanent transport infrastructure for interplanetary or interstellar commutes, allowing the transport craft themselves to carry very little fuel.