Pressemitteilung
... the neoLASE GmbH were significantly involved. The laser head used in the measuring equipment was developed and built by Laser Zentrum Hannover and fitted with assembled special cables from Leoni’s Business Unit Fiber Optics. The two LIGO observatories (Laser Interferometer Gravitation Wave Observato ...
... the neoLASE GmbH were significantly involved. The laser head used in the measuring equipment was developed and built by Laser Zentrum Hannover and fitted with assembled special cables from Leoni’s Business Unit Fiber Optics. The two LIGO observatories (Laser Interferometer Gravitation Wave Observato ...
Construction of a femtosecond mode
... chosen so that a sufficiently self-focused beam can pass the aperture without attenuation, due to the smaller beam size, whilst a less focused beam will undergo attenuation due to diffraction losses. Use of a physical aperture, called a 'hard' aperture, can thus create an intensity-dependent loss m ...
... chosen so that a sufficiently self-focused beam can pass the aperture without attenuation, due to the smaller beam size, whilst a less focused beam will undergo attenuation due to diffraction losses. Use of a physical aperture, called a 'hard' aperture, can thus create an intensity-dependent loss m ...
Experimental Techniques of Optics PHYC 476,477, 302L Instructor:
... You will be asked to sign an "agreement of understanding" form on the first session of this course. ...
... You will be asked to sign an "agreement of understanding" form on the first session of this course. ...
IOSR Journal of Humanities and Social Science (JHSS)
... laser has been discovered, the scientists and specialists in their respective fields are interested in applications that can be available in many areas through the use of laser technology, but it is clear that the majority of applied research that dealt with the laser was distantly related for visua ...
... laser has been discovered, the scientists and specialists in their respective fields are interested in applications that can be available in many areas through the use of laser technology, but it is clear that the majority of applied research that dealt with the laser was distantly related for visua ...
Giving a boost to atoms (pdf, 124 kB)
... atoms to be emitted. Inouye et al.1 prepared their input matter wave using optically induced Bragg diffraction3 of a Bose–Einstein condensate. This is a process whereby atoms are exposed to two laser beams with slightly different frequencies. The atoms, initially at rest, absorb a photon from the hi ...
... atoms to be emitted. Inouye et al.1 prepared their input matter wave using optically induced Bragg diffraction3 of a Bose–Einstein condensate. This is a process whereby atoms are exposed to two laser beams with slightly different frequencies. The atoms, initially at rest, absorb a photon from the hi ...
Light Source Notes
... different bandwidths of the laser angular noise spectrum contribute into the overall noise of the instrument. In order to quantify pointing instability, an LTP with an additional reference beam was developed [10]. In the optical schematic of this instrument, the reference slope signal from a station ...
... different bandwidths of the laser angular noise spectrum contribute into the overall noise of the instrument. In order to quantify pointing instability, an LTP with an additional reference beam was developed [10]. In the optical schematic of this instrument, the reference slope signal from a station ...
Optical spectroscopy techniques
... For detector signal S~ ǻ, and detector signal noise į6 ~ ǻ,noise Sensitivity is a signal-‐to-‐noise ratio: S/į6 From condition the minimum detectable number density of absorbing molecule ...
... For detector signal S~ ǻ, and detector signal noise į6 ~ ǻ,noise Sensitivity is a signal-‐to-‐noise ratio: S/į6 From condition the minimum detectable number density of absorbing molecule ...
Photonic Crystals: Periodic Surprises in Electromagnetism
... A mystery from the 19th century crystalline conductor (e.g. copper) ...
... A mystery from the 19th century crystalline conductor (e.g. copper) ...
Theory of relativistic optical harmonic generation
... identically for an isotropic medium for a circularly polarized fundamental laser beam [14]. Let us recall why traditional models [15] predict the vanishing of THG under excitation with circularly polarized radiation and see why this argument breaks down under relativistic conditions. Nonlinear optic ...
... identically for an isotropic medium for a circularly polarized fundamental laser beam [14]. Let us recall why traditional models [15] predict the vanishing of THG under excitation with circularly polarized radiation and see why this argument breaks down under relativistic conditions. Nonlinear optic ...
Monolithic, unidirectional single
... oscillation in a MISER using neodymium-doped gadolinium gallium garnet (Nd:GGG). Its dimensions were identical to those of the Nd:YAG MISER. The substantially greater Verdet constant of Nd:GGG (Ref. 10) is an advantage for this material. Detailed measurements were not made. We made a beat-frequency ...
... oscillation in a MISER using neodymium-doped gadolinium gallium garnet (Nd:GGG). Its dimensions were identical to those of the Nd:YAG MISER. The substantially greater Verdet constant of Nd:GGG (Ref. 10) is an advantage for this material. Detailed measurements were not made. We made a beat-frequency ...
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.