Metastable noble gas atoms in strong
... permittivity, m e is the mass of an electron and ω0 is the central frequency of the pulse. The Keldysh parameter arises from Keldysh’s work to find common theoretical ground between perturbative multiphoton ionization and tunnel ionization. Physically, the Keldysh parameter is an adiabatic ratio tha ...
... permittivity, m e is the mass of an electron and ω0 is the central frequency of the pulse. The Keldysh parameter arises from Keldysh’s work to find common theoretical ground between perturbative multiphoton ionization and tunnel ionization. Physically, the Keldysh parameter is an adiabatic ratio tha ...
Rodrigo Aviles‐Espinosa STRATEGIES FOR PUSHING NONLINEAR MICROSCOPY TOWARDS ITS PERFORMANCE LIMITS
... achieve its full potential there are still several issues that must be addressed. To do so, it is very important to identify and adapt the key elements in a NLM for achieving an optimized interaction among them. These are 1) the laser source 2) the optics and 3) the sample properties for contrast ge ...
... achieve its full potential there are still several issues that must be addressed. To do so, it is very important to identify and adapt the key elements in a NLM for achieving an optimized interaction among them. These are 1) the laser source 2) the optics and 3) the sample properties for contrast ge ...
Bertolotti M. The history of the laser
... did not answer the questions concerning the nature of light and how it is produced. During the Middle Ages, when problems of nature were discussed on the basis of Aristotelian philosophy, according to which the ‘nature’ of things consists of the reasons for their existence, that is in their ultimate ...
... did not answer the questions concerning the nature of light and how it is produced. During the Middle Ages, when problems of nature were discussed on the basis of Aristotelian philosophy, according to which the ‘nature’ of things consists of the reasons for their existence, that is in their ultimate ...
Optical limiting in a periodic materials with relaxational nonlinearity Xue Liu,
... protect the eyes the transmitted fluence through the device should be clamped under 500 nJ/cm2 over a range of visible wavelengths. Dangerous IR radiation could be eliminated by a fixed high pass filter. Organic materials have shown great promise for optical limiting applications. They possess rever ...
... protect the eyes the transmitted fluence through the device should be clamped under 500 nJ/cm2 over a range of visible wavelengths. Dangerous IR radiation could be eliminated by a fixed high pass filter. Organic materials have shown great promise for optical limiting applications. They possess rever ...
gaussian beam optics
... to the theoretical TEM00 mode. Coherent Gaussian beams have peculiar transformation properties which require special consideration. In order to select the best optics for a particular laser application, it is important to understand the basic properties of Gaussian beams. Unfortunately, the output f ...
... to the theoretical TEM00 mode. Coherent Gaussian beams have peculiar transformation properties which require special consideration. In order to select the best optics for a particular laser application, it is important to understand the basic properties of Gaussian beams. Unfortunately, the output f ...
Semiconductor Lasers Using Diffused Quantum
... where disordering occurs will be reduced significantly by the increase of background temperature. Another advantage of using ceramic is that its low thermal conductivity also helps in reducing the required power density of laser beam. Therefore, the irradiation of laser light of 5 W/mm power density ...
... where disordering occurs will be reduced significantly by the increase of background temperature. Another advantage of using ceramic is that its low thermal conductivity also helps in reducing the required power density of laser beam. Therefore, the irradiation of laser light of 5 W/mm power density ...
Polariton traps in semiconductor microcavities
... alent to vertical-cavity surface emitting lasers (VCSELs). Whereas lasing in VCSELs occurs at high e–h densities so that excitons are screened out, oscillation in the OPO is still governed by exciton–polariton emission. Another eMect of the strong parametric interaction is to shift and distort the ...
... alent to vertical-cavity surface emitting lasers (VCSELs). Whereas lasing in VCSELs occurs at high e–h densities so that excitons are screened out, oscillation in the OPO is still governed by exciton–polariton emission. Another eMect of the strong parametric interaction is to shift and distort the ...
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.