interferometer_2014
... equal, we mitigate problems caused by multimode behavior of the laser. There are only two critical alignment angles in a Michelson interferometer and we use a single precision mount to make these adjustments. The rest of the mounts are simple and cheap. To get good-looking fringes, you need the lase ...
... equal, we mitigate problems caused by multimode behavior of the laser. There are only two critical alignment angles in a Michelson interferometer and we use a single precision mount to make these adjustments. The rest of the mounts are simple and cheap. To get good-looking fringes, you need the lase ...
Observation of Cooper minimum in Krypton using high harmonic
... which is always positive. A more detailed discussion and full numerical simulations of the propagation effects can be found in [30]. Several materials contribute to the pulse propagation after the fibre. CaF2 windows on the HCF (1 mm thickness) and at the entrance of the high-harmonic chamber (3 mm ...
... which is always positive. A more detailed discussion and full numerical simulations of the propagation effects can be found in [30]. Several materials contribute to the pulse propagation after the fibre. CaF2 windows on the HCF (1 mm thickness) and at the entrance of the high-harmonic chamber (3 mm ...
Reports of optical fiber communication systems 2011-2012
... absorption, or changes of free carrier concentration. Usually, if several such effects appear together, the modulator is called an electro-absorptive modulator. ...
... absorption, or changes of free carrier concentration. Usually, if several such effects appear together, the modulator is called an electro-absorptive modulator. ...
laser optical disk set
... holes on the Laser Ray Box and identify the order of the exit rays compared to their entry order (see Diagram 5.5a) Although the order of the rays as shown appears to have been reversed (ABC becomes CBA), this is not so if viewed against the direction of the oncoming light. Diagram 5.5b To confirm ...
... holes on the Laser Ray Box and identify the order of the exit rays compared to their entry order (see Diagram 5.5a) Although the order of the rays as shown appears to have been reversed (ABC becomes CBA), this is not so if viewed against the direction of the oncoming light. Diagram 5.5b To confirm ...
PPT
... Incoherent waves: The phase relation is random. Waves from two unrelated sources. Examples: light from two points on the sun or two atoms on a light bulb filament, or two people singing the same note. Incoherent intensities add. The average of constructive and destructive interference is no inte ...
... Incoherent waves: The phase relation is random. Waves from two unrelated sources. Examples: light from two points on the sun or two atoms on a light bulb filament, or two people singing the same note. Incoherent intensities add. The average of constructive and destructive interference is no inte ...
Helium Neon Laser - Abbe School of Photonics
... 2.1 Helium Neon Laser A helium-neon laser is a gas laser, consisting of a mixture of helium and neon gas in a ratio between 5:1 and 20:1 bound in a glass tube. The pump energy of the laser is provided by an electrical discharge of several hundred Volts between an anode and cathode at each end of the ...
... 2.1 Helium Neon Laser A helium-neon laser is a gas laser, consisting of a mixture of helium and neon gas in a ratio between 5:1 and 20:1 bound in a glass tube. The pump energy of the laser is provided by an electrical discharge of several hundred Volts between an anode and cathode at each end of the ...
guidelines for writing papers
... complex ions respectively by combining with TEA and NH3 in the pH range of 8 and 9. The [Cu(TEA)]2+ and [Al(NH3)3]3+ complexes which combine with S2- ions to form dark green or black CuAlS2 thin film on the glass slide. The optical properties of CuAlS2 thin films were determined from transmission an ...
... complex ions respectively by combining with TEA and NH3 in the pH range of 8 and 9. The [Cu(TEA)]2+ and [Al(NH3)3]3+ complexes which combine with S2- ions to form dark green or black CuAlS2 thin film on the glass slide. The optical properties of CuAlS2 thin films were determined from transmission an ...
interstellar precursor mission - Colorado Space Grant Consortium
... high exhaust velocities (high specific impulses) at which the thrusters must operate to perform this mission efficiently. Results obtained from these analyses will be used to define the ion optics geometry that will assure proper thruster operation over the full 10-year mission lifetime and spacecra ...
... high exhaust velocities (high specific impulses) at which the thrusters must operate to perform this mission efficiently. Results obtained from these analyses will be used to define the ion optics geometry that will assure proper thruster operation over the full 10-year mission lifetime and spacecra ...
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.