V807 -Photon-Counting Avalanche Photodiodes – A Primer
... Thus, the instantaneous rate of absorption in a single detector under uniform illumination will fluctuate randomly from moment to moment, even though the average rate is determined by the incident optical power level.8 This irregularity in the timing of photon absorption events constitutes a type of ...
... Thus, the instantaneous rate of absorption in a single detector under uniform illumination will fluctuate randomly from moment to moment, even though the average rate is determined by the incident optical power level.8 This irregularity in the timing of photon absorption events constitutes a type of ...
Tutorial on Optomechanical Beam Steering Mechanisms
... These are typically the final output mirrors in active (beam emitting) systems. They are typically lightweight mirrors steered by electromechanical actuators on the back of the mirror. The choice of actuation mechanism is driven by the required frequency response of the mirror – high frequency, high ...
... These are typically the final output mirrors in active (beam emitting) systems. They are typically lightweight mirrors steered by electromechanical actuators on the back of the mirror. The choice of actuation mechanism is driven by the required frequency response of the mirror – high frequency, high ...
Fast-light for astrophysics - Laboratory for Atomic and Photonic
... light cavity could be useful in future incarnations of LIGO, for detecting gravitational waves. This prospect is already under study [8]. In fact, a configuration using both the broadened bandwidth and an effect related to the sensitivity enhancement that we are investigating has also been proposed fo ...
... light cavity could be useful in future incarnations of LIGO, for detecting gravitational waves. This prospect is already under study [8]. In fact, a configuration using both the broadened bandwidth and an effect related to the sensitivity enhancement that we are investigating has also been proposed fo ...
The optics and performance of dual-focus fluorescence correlation
... into account all possible aberrations. Second, we describe how to use the calculated MDF for calculating the ACFs and CCF that would be measured by a 2fFCS experiment under the given optical and photophysical conditions. Third, these calculated curves are then fitted with a standard fit routine as u ...
... into account all possible aberrations. Second, we describe how to use the calculated MDF for calculating the ACFs and CCF that would be measured by a 2fFCS experiment under the given optical and photophysical conditions. Third, these calculated curves are then fitted with a standard fit routine as u ...
Variable xy-UV beam expander for high-power laser
... despite internal monitoring and crystal compensation, they are never 100% stable. For a finely tuned diffraction limited optical system, such input beam drift can be detrimental to the imaging performance. In the worst case, the laser needs to be replaced after its power has dropped below an irrecov ...
... despite internal monitoring and crystal compensation, they are never 100% stable. For a finely tuned diffraction limited optical system, such input beam drift can be detrimental to the imaging performance. In the worst case, the laser needs to be replaced after its power has dropped below an irrecov ...
Optical bistability in a Vertical-Cavity Semiconductor Optical Amplifier
... Optical bistability in semiconductor optical amplifiers (SOAs) has been studied extensively in view of the potential applications in optical logic and all-optical signal processing [1,2]. Optical bistability refers to the situation in which two stable optical output states are associated with a sing ...
... Optical bistability in semiconductor optical amplifiers (SOAs) has been studied extensively in view of the potential applications in optical logic and all-optical signal processing [1,2]. Optical bistability refers to the situation in which two stable optical output states are associated with a sing ...
The color of shock waves in photonic crystals Abstract Evan J. Reed,
... Manipulation of light using technologies that do not require electronics is the only feasible way to retain information about phase coherence and/or quantum information. These properties are required for many all-optical signal processing schemes and all quantum information processing and transport ...
... Manipulation of light using technologies that do not require electronics is the only feasible way to retain information about phase coherence and/or quantum information. These properties are required for many all-optical signal processing schemes and all quantum information processing and transport ...
8. Beam splitters
... made of optical glass, quartz or single-axis crystals (e.g. CaF2) coated with thin-film layers system. Depending on application it can be either metallic layer or dielectric coating. However one should remember that such an element introduces a shift or deviation into the light beam due to the thick ...
... made of optical glass, quartz or single-axis crystals (e.g. CaF2) coated with thin-film layers system. Depending on application it can be either metallic layer or dielectric coating. However one should remember that such an element introduces a shift or deviation into the light beam due to the thick ...
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.