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... the background against which the part is viewed. Over the years, confusion arose in the photonics industry as to the exact interpretation and meaning of the surface quality specification, especially as concerns the scratch number. In an attempt to remedy this, the drawing C7641866 was revised severa ...
... the background against which the part is viewed. Over the years, confusion arose in the photonics industry as to the exact interpretation and meaning of the surface quality specification, especially as concerns the scratch number. In an attempt to remedy this, the drawing C7641866 was revised severa ...
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... by self-assembly methods are prone to defects; therefore, the mass production of uniform, defect-free, large-area 3D photonic structures, in particular with narrowband diffraction in the visible spectrum is limited.[8] For example, producing highquality monodisperse, highly-charged polystyrene parti ...
... by self-assembly methods are prone to defects; therefore, the mass production of uniform, defect-free, large-area 3D photonic structures, in particular with narrowband diffraction in the visible spectrum is limited.[8] For example, producing highquality monodisperse, highly-charged polystyrene parti ...
Large-Scale Optical-Field Measurements with Geometric Fibre Constructs
... Piezoelectric materials are critically important for a wide range of technological applications, from various electromechanical sensors/actuators to acoustic and non-linear optical devices. A piezoelectric material undergoes a change in electrical polarization in response to mechanical stress, and v ...
... Piezoelectric materials are critically important for a wide range of technological applications, from various electromechanical sensors/actuators to acoustic and non-linear optical devices. A piezoelectric material undergoes a change in electrical polarization in response to mechanical stress, and v ...
Cristaux photoniques non
... and linear effects in the medium. There are two main kinds of solitons: Spatial solitons: the nonlinear effect can balance the diffraction. The electromagnetic field can change the refractive index of the medium while propagating, thus creating a structure similar to a graded-index fiber. If the fie ...
... and linear effects in the medium. There are two main kinds of solitons: Spatial solitons: the nonlinear effect can balance the diffraction. The electromagnetic field can change the refractive index of the medium while propagating, thus creating a structure similar to a graded-index fiber. If the fie ...
Measurement of the Number of Atoms in a Magneto
... class toward that beam are being slowed down. Due to the Doppler effect the red-shifted light from the lasers is exactly on resonance for these atoms and thus they absorb the light. This absorption means that momentum is transferred from the photons to the atom, thus slowing the atom down. Because o ...
... class toward that beam are being slowed down. Due to the Doppler effect the red-shifted light from the lasers is exactly on resonance for these atoms and thus they absorb the light. This absorption means that momentum is transferred from the photons to the atom, thus slowing the atom down. Because o ...
Wei Zhang, Hainian Han, Yanying Zhao, Qiang Du, Zhiyi Wei. A
... The advent of the femtosecond optical frequency comb represents a breakthrough of high precision optical frequency measurement [1,2]. In 1999, the optical frequency measurement with the frequency comb based on Ti:sapphire mode-locked laser has opened a revolutionary progress in frequency metrology [ ...
... The advent of the femtosecond optical frequency comb represents a breakthrough of high precision optical frequency measurement [1,2]. In 1999, the optical frequency measurement with the frequency comb based on Ti:sapphire mode-locked laser has opened a revolutionary progress in frequency metrology [ ...
Recollison physics - Attosecond Science
... relative to the axis of an oxygen molecule. A two- or threedimensional imaging detector like that illustrated in figure 2c can directly measure the transverse component of the electron wavepacket. As long as the electron does not recollide, nothing stands between it and the detector. If initiated by ...
... relative to the axis of an oxygen molecule. A two- or threedimensional imaging detector like that illustrated in figure 2c can directly measure the transverse component of the electron wavepacket. As long as the electron does not recollide, nothing stands between it and the detector. If initiated by ...
8. LASER COOLING AND TRAPPING OF NEUTRAL ATOMS 8.1
... To is the temperature of the atomic beam oven. The values of At and L\L in Table I assume Vo= Vm(10 selected for oven pressures of -0.1 Torr) aoop. The wavelength A is for the principal S];2 P3/2transition. Two methods have been used to generate the required frequency chirp = vi A. A traveling-wave ...
... To is the temperature of the atomic beam oven. The values of At and L\L in Table I assume Vo= Vm(10 selected for oven pressures of -0.1 Torr) aoop. The wavelength A is for the principal S];2 P3/2transition. Two methods have been used to generate the required frequency chirp = vi A. A traveling-wave ...
Low threshold current and widely tunable external cavity lasers with
... wavelengths of longer, medium, and shorter wavelength range, with stacking numbers of 4, 3 and 3 layers and designated as 4*QDL, 3*QDM and 3*QDS, are designed with InGaAs SRL thickness of 4, 3 and 1.5 nm, respectively. From Eq. (1) and (2), the GS/ES emission peaks are calculated to be 1270/1191, 12 ...
... wavelengths of longer, medium, and shorter wavelength range, with stacking numbers of 4, 3 and 3 layers and designated as 4*QDL, 3*QDM and 3*QDS, are designed with InGaAs SRL thickness of 4, 3 and 1.5 nm, respectively. From Eq. (1) and (2), the GS/ES emission peaks are calculated to be 1270/1191, 12 ...
PHOTONIC CRYSTALS WITH ACTIVE ORGANIC MATERIALS by
... Figure 1-2 Hyper Rayleigh scattering. Second harmonic light is generated in an isotropic solution........................................................................................................................ 25 ...
... Figure 1-2 Hyper Rayleigh scattering. Second harmonic light is generated in an isotropic solution........................................................................................................................ 25 ...
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.