Metal-optic and Plasmonic Semiconductor
... reflect light (metal-optics) or convert light to electrical currents (plasmonics). In both cases, metals have provided ways to squeeze light beyond the diffraction limit. In this dissertation, I experimentally demonstrated one nanolaser based on plasmonic transduction and another laser based on meta ...
... reflect light (metal-optics) or convert light to electrical currents (plasmonics). In both cases, metals have provided ways to squeeze light beyond the diffraction limit. In this dissertation, I experimentally demonstrated one nanolaser based on plasmonic transduction and another laser based on meta ...
Combining Photonic Crystal and Optical Monte
... the propagation of scintillation photons in PET detectors using ray tracing algorithms based on geometric optics [1]–[3], [12]. Since these techniques are not capable of computing the diffractive effects of PhCs, an additional tool is required to solve Maxwell’s equations. For the combination of the ...
... the propagation of scintillation photons in PET detectors using ray tracing algorithms based on geometric optics [1]–[3], [12]. Since these techniques are not capable of computing the diffractive effects of PhCs, an additional tool is required to solve Maxwell’s equations. For the combination of the ...
- Natural Sciences Publishing
... Figure 2: Transmittance spectra of GexSb40-xSe60 thin films as a ...
... Figure 2: Transmittance spectra of GexSb40-xSe60 thin films as a ...
Optically Enhanced Magnetic Resonance
... dynamics. This possibility arises from the coupling between the spins and the electronic degrees of freedom: optical photons excite transitions between states that differ both in electronic excitation energy as well as in their angular momentum states. The light can serve three different purposes: i ...
... dynamics. This possibility arises from the coupling between the spins and the electronic degrees of freedom: optical photons excite transitions between states that differ both in electronic excitation energy as well as in their angular momentum states. The light can serve three different purposes: i ...
Ultralow-power all-optical switching Marin Solja i ,
... such nonlinearities are fairly weak, so one is forced to make undesirable compromises in interaction time, device-length, and/or power. To optimize the effects, we combine two approaches to enhance optical nonlinearities. One is structural: We design a structure whose geometrical properties enhance ...
... such nonlinearities are fairly weak, so one is forced to make undesirable compromises in interaction time, device-length, and/or power. To optimize the effects, we combine two approaches to enhance optical nonlinearities. One is structural: We design a structure whose geometrical properties enhance ...
Lecture 10: Surface Plasmon Excitation
... • Light escapes prism below critical angle for total internal reflection • Technique can be used to determine the thickness of metallic thin films ...
... • Light escapes prism below critical angle for total internal reflection • Technique can be used to determine the thickness of metallic thin films ...
Lecture2
... The first couple of minutes after a space shuttle launch can be described as follows: The initial mass is 2x10E6 kg, the final mass (after 2 minutes) is about 1x10E6 kg, the average exhaust speed is about 3000 m/s. If all this were taking place in outer space, with negligible gravity, what would be ...
... The first couple of minutes after a space shuttle launch can be described as follows: The initial mass is 2x10E6 kg, the final mass (after 2 minutes) is about 1x10E6 kg, the average exhaust speed is about 3000 m/s. If all this were taking place in outer space, with negligible gravity, what would be ...
PPLN waveguide for quantum communication | SpringerLink
... protocols. We point out a simple means to characterize the pair creation probability in case of a pulsed pump. To investigate the quality of the entangled states, we perform photon-pair interference experiments, leading to visibilities of 97% for the case of energy-time entanglement and of 84% for t ...
... protocols. We point out a simple means to characterize the pair creation probability in case of a pulsed pump. To investigate the quality of the entangled states, we perform photon-pair interference experiments, leading to visibilities of 97% for the case of energy-time entanglement and of 84% for t ...
The Projecting Microscope
... The projecting microscope forms a highly enlarged real image of some small object on a distant screen. It differs from the viewing microscope with which the viewer sees a virtual image, located in the same plane as the object at a distance of 25 cm from the eye - the closest distance of distinct vis ...
... The projecting microscope forms a highly enlarged real image of some small object on a distant screen. It differs from the viewing microscope with which the viewer sees a virtual image, located in the same plane as the object at a distance of 25 cm from the eye - the closest distance of distinct vis ...
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.