Two electric field Monte Carlo models of coherent backscattering of
... Modeling of coherent polarized light propagation in turbid scattering medium by the Monte Carlo method provides an ultimate understanding of coherent effects of multiple scattering, such as enhancement of coherent backscattering and peculiarities of laser speckle formation in dynamic light scatterin ...
... Modeling of coherent polarized light propagation in turbid scattering medium by the Monte Carlo method provides an ultimate understanding of coherent effects of multiple scattering, such as enhancement of coherent backscattering and peculiarities of laser speckle formation in dynamic light scatterin ...
Coherent population trapping resonances at lower atomic
... We note that narrow CPT resonances in absorption of the two-frequency pumping are formed in two different L-systems 6S1/2(F = 3) – 6P3/2(F¢ = 3) – 6S1/2(F = 4) and 6S1/2(F = 3) – 6P3/2(F¢ = 4) – 6S1/2(F = 4) (Fig. 2), which correspond to atomic velocity projections V33 and V34 in Eqn (2). Indeed, ac ...
... We note that narrow CPT resonances in absorption of the two-frequency pumping are formed in two different L-systems 6S1/2(F = 3) – 6P3/2(F¢ = 3) – 6S1/2(F = 4) and 6S1/2(F = 3) – 6P3/2(F¢ = 4) – 6S1/2(F = 4) (Fig. 2), which correspond to atomic velocity projections V33 and V34 in Eqn (2). Indeed, ac ...
Fused Silica
... mechanical properties enable accurate models Good propagation models to set design requirements (Melody and FFT Code) ...
... mechanical properties enable accurate models Good propagation models to set design requirements (Melody and FFT Code) ...
Heriot-Watt University Multi-millijoule few-cycle mid
... place in a 2-mm thick yttrium aluminium garnet (Y3Al5O12, YAG) plate oriented at the Brewster angle and placed at a distance of 50 cm from the focal plane of a lens with the focal distance of 75 cm. For the characterization a fraction of the radiation is picked up by a CaF2 wedge directly after the ...
... place in a 2-mm thick yttrium aluminium garnet (Y3Al5O12, YAG) plate oriented at the Brewster angle and placed at a distance of 50 cm from the focal plane of a lens with the focal distance of 75 cm. For the characterization a fraction of the radiation is picked up by a CaF2 wedge directly after the ...
1.5% root-mean-square flat-intensity laser beam
... both intensity and phase. However, since the calculation of lens surfaces is based on specific input and output beam shapes, the whole system can only work well for the single input–output combination. In addition, the technique can do nothing to reduce the effect of spatial noise and imperfections ...
... both intensity and phase. However, since the calculation of lens surfaces is based on specific input and output beam shapes, the whole system can only work well for the single input–output combination. In addition, the technique can do nothing to reduce the effect of spatial noise and imperfections ...
Deposition and Characterization of Dielectric Distributed Bragg
... The current standard wavelength for short-haul is 850 nm, however switching to 980 nm can improve transmission distance in optical fiber by lowering absorption and chromatic dispersion. To improve the performance of VCSELs, mirrors with less optical loss can be used. VCSELs require mirrors with > 99 ...
... The current standard wavelength for short-haul is 850 nm, however switching to 980 nm can improve transmission distance in optical fiber by lowering absorption and chromatic dispersion. To improve the performance of VCSELs, mirrors with less optical loss can be used. VCSELs require mirrors with > 99 ...
![[13] S. Ghost, ST Parker, X. Wang, DL Kaplan and JA Lewis](http://s1.studyres.com/store/data/009648722_1-ad6a1b829b6738b583b7809c145421dd-300x300.png)
[13] S. Ghost, ST Parker, X. Wang, DL Kaplan and JA Lewis
... The development of optical fiber technology has increased the demand for new biological devices where light plays the role of sensor, actuator or laser beam carrier 1,2,3. Implanted sensors are currently scarce, due to the challenges of miniaturization and biocompatibility. However, many examples o ...
... The development of optical fiber technology has increased the demand for new biological devices where light plays the role of sensor, actuator or laser beam carrier 1,2,3. Implanted sensors are currently scarce, due to the challenges of miniaturization and biocompatibility. However, many examples o ...
Topological pumping over a photonic Fibonacci quasicrystal Please share
... 28-waveguide-long arrays [29] have been fabricated with different values of φ, between 0 and 2π . Figure 3(a) depicts the numerically obtained energy spectrum of the Hamiltonian of this system as a function of φ. The spectrum is broken into a set of bands and gaps which remains mostly unchanged, but ...
... 28-waveguide-long arrays [29] have been fabricated with different values of φ, between 0 and 2π . Figure 3(a) depicts the numerically obtained energy spectrum of the Hamiltonian of this system as a function of φ. The spectrum is broken into a set of bands and gaps which remains mostly unchanged, but ...
Experimental Realization of Two Decoupled Directional Couplers in a
... as optical modulators and switches for high-speed communication and on-chip data processing.2−4 More recently, the directional coupler has been harnessed as the building block for photonic quantum integrated circuits and shown to enable quantum computing logic operations when used with single photon ...
... as optical modulators and switches for high-speed communication and on-chip data processing.2−4 More recently, the directional coupler has been harnessed as the building block for photonic quantum integrated circuits and shown to enable quantum computing logic operations when used with single photon ...
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.