design and analysis of variable gain amplifier with
... WDM coupler and launched into an erbium doped. Its core is the erbium doped optical fiber system with the Erbium type material, which is typically a single-mode fiber. Pump light propagating along the EDF is depleted as erbium ions are raised to an excited state (higher level of energy). As the sign ...
... WDM coupler and launched into an erbium doped. Its core is the erbium doped optical fiber system with the Erbium type material, which is typically a single-mode fiber. Pump light propagating along the EDF is depleted as erbium ions are raised to an excited state (higher level of energy). As the sign ...
Attosecond real time observation of ionization and electron
... ionize the atom. At these intensities around 1013 W/cm², perturbation theory breaks down as a clear result of the fact, that binding potential and laser field become comparable in strength. For ever stronger fields, the influence of the electric field on the intra-atomic structure more and more gove ...
... ionize the atom. At these intensities around 1013 W/cm², perturbation theory breaks down as a clear result of the fact, that binding potential and laser field become comparable in strength. For ever stronger fields, the influence of the electric field on the intra-atomic structure more and more gove ...
Wavelength Conversion Technologies for Photonic Network
... Despite such expectations and some promising experimental reports, the wavelength conversion technologies are as yet immature. The technologies that have been reported so far are the OE-EO transponder type, the gating type using semiconductor devices and optical fiber,5)-9) and the coherent type, wh ...
... Despite such expectations and some promising experimental reports, the wavelength conversion technologies are as yet immature. The technologies that have been reported so far are the OE-EO transponder type, the gating type using semiconductor devices and optical fiber,5)-9) and the coherent type, wh ...
Laser Sources for Confocal Microscopy
... common in confocal. Assuming a 10% optical path efficiency a laserhead output power of >~1 mW suffices. There are two different types of saturation effects. One is related to the number of molecules that can absorb light in a given area for a certain incident flux. In a given pixel, assuming a volum ...
... common in confocal. Assuming a 10% optical path efficiency a laserhead output power of >~1 mW suffices. There are two different types of saturation effects. One is related to the number of molecules that can absorb light in a given area for a certain incident flux. In a given pixel, assuming a volum ...
Introduction to Adaptive Optics and Deformable
... Understanding Wavefronts | Adaptive Optical Elements and Systems | Key Parameters| Applications In optical systems misalignment of components, imperfections in elements, or aberrations can internally reduce performance, while heat and atmosphere can Deformable Mirrors externally reduce performance. ...
... Understanding Wavefronts | Adaptive Optical Elements and Systems | Key Parameters| Applications In optical systems misalignment of components, imperfections in elements, or aberrations can internally reduce performance, while heat and atmosphere can Deformable Mirrors externally reduce performance. ...
1 - Foundation for Research and Technology
... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
Laser Sources for Confocal Microscopy
... common in confocal. Assuming a 10% optical path efficiency a laserhead output power of >~1 mW suffices. There are two different types of saturation effects. One is related to the number of molecules that can absorb light in a given area for a certain incident flux. In a given pixel, assuming a volum ...
... common in confocal. Assuming a 10% optical path efficiency a laserhead output power of >~1 mW suffices. There are two different types of saturation effects. One is related to the number of molecules that can absorb light in a given area for a certain incident flux. In a given pixel, assuming a volum ...
The List of Author`s Publications
... output powers: around 500 W of output power in a diffraction-limited continuous-wave beam have been obtained with a single disk or around 1 kW using two disks [6]. So far, thin-disk lasers have lead to the highest average output power of 80 W from a mode-locked laser [7; 8], and pulse energies of > ...
... output powers: around 500 W of output power in a diffraction-limited continuous-wave beam have been obtained with a single disk or around 1 kW using two disks [6]. So far, thin-disk lasers have lead to the highest average output power of 80 W from a mode-locked laser [7; 8], and pulse energies of > ...
PCF Based Sensor with High Sensitivity, High
... It is important to emphasize that, unlike traditional polarization-maintaining fibers [25], which comprise at least of two types of glass material, each one with a different thermal coefficient, the birefringence obtainable with PCFs is highly insensitive to temperature, which is a significant featu ...
... It is important to emphasize that, unlike traditional polarization-maintaining fibers [25], which comprise at least of two types of glass material, each one with a different thermal coefficient, the birefringence obtainable with PCFs is highly insensitive to temperature, which is a significant featu ...
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.