Two-Photon Excited Fluorescence Microscopy - Spectra
... generated in TPM can be calculated. Two examples of these calculations are shown in Figure 7 where fluorescence signal induced by two-photon absorption is plotted as a function of GDD for 100 fs long pulses at two different excitation wavelengths. The GDD of a typical basic system used for TPM is on ...
... generated in TPM can be calculated. Two examples of these calculations are shown in Figure 7 where fluorescence signal induced by two-photon absorption is plotted as a function of GDD for 100 fs long pulses at two different excitation wavelengths. The GDD of a typical basic system used for TPM is on ...
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... illustrated generally at 60. The outer walls of the wave A microwave generator is provided in which at least guide 60 and the outer cylindrical conductors of the two transmission lines are connected at intervals along coaxial lines 34, 36, 38 and 40 are all at the same refer the length of a wave gui ...
... illustrated generally at 60. The outer walls of the wave A microwave generator is provided in which at least guide 60 and the outer cylindrical conductors of the two transmission lines are connected at intervals along coaxial lines 34, 36, 38 and 40 are all at the same refer the length of a wave gui ...
Integrated Optics
... • Integrated optics is a system of light-controlling components combined into a single device. The ultimate aim is to create miniature optical circuits similar to the silicon chips that have revolutionized the electronics industry. The advantage of the optical approach however is that data can be pr ...
... • Integrated optics is a system of light-controlling components combined into a single device. The ultimate aim is to create miniature optical circuits similar to the silicon chips that have revolutionized the electronics industry. The advantage of the optical approach however is that data can be pr ...
LEP 2.6.07 Helium Neon Laser
... recombination process of the laser cycle takes place on its walls. As far as the active material is concerned, the diameter of the capillary should be as small as possible to enable an optimal laser output, but it should not be too small as to block the path of the fundamental mode. The course which ...
... recombination process of the laser cycle takes place on its walls. As far as the active material is concerned, the diameter of the capillary should be as small as possible to enable an optimal laser output, but it should not be too small as to block the path of the fundamental mode. The course which ...
Heterogenously integrated InP on Si microdisk lasers
... transmission medium and heterogeneously integrated detectors. Although one could also use Gedetectors, we have chosen for an approach with III-V detectors. As explained in [9], one can even use identical microdisk structures for both the transmitter and the detector, although the detectors are not w ...
... transmission medium and heterogeneously integrated detectors. Although one could also use Gedetectors, we have chosen for an approach with III-V detectors. As explained in [9], one can even use identical microdisk structures for both the transmitter and the detector, although the detectors are not w ...
External-cavity diode lasers provide absolute references for WDM
... most accurate measurements of these sources, however, are made by direct measurement against the WDM reference source. The laser being measured can then be traced back to the cesium clock with ±1 MHz precision. In this type of heterodyne measurement, the output of the WDM reference source and the te ...
... most accurate measurements of these sources, however, are made by direct measurement against the WDM reference source. The laser being measured can then be traced back to the cesium clock with ±1 MHz precision. In this type of heterodyne measurement, the output of the WDM reference source and the te ...
Fabrication and Application of Phase only Holograms for High
... leads to test sample destruction. Cooling of the samples with compressed air allowed them not to be destroyed at least for 60 seconds. 4. Beam shaping with binary phase only holograms Although the ability of ITO coatings to withstand high cw power levels is crucial for the envisioned applications it ...
... leads to test sample destruction. Cooling of the samples with compressed air allowed them not to be destroyed at least for 60 seconds. 4. Beam shaping with binary phase only holograms Although the ability of ITO coatings to withstand high cw power levels is crucial for the envisioned applications it ...
Parhelic-like Circle and Chaotic Light Scattering
... Besides these phenomena, we also observed the formation of some caustics. One of these caustics is the light pattern involving the parlaseric circle [2], explained by the Theory of Geometrical Diffraction [3]. The parlaseric circle is a luminous ring generated by light scattering in foams or soap bu ...
... Besides these phenomena, we also observed the formation of some caustics. One of these caustics is the light pattern involving the parlaseric circle [2], explained by the Theory of Geometrical Diffraction [3]. The parlaseric circle is a luminous ring generated by light scattering in foams or soap bu ...
Synchronized ti scattering microscopy
... The experimental setup of the time-lens source synchronized to a Ti:Sa mode-locked laser (Mira 900, Coherent) is shown in Fig. 1 (dotted box). The GaAs photodetector (ET-4000, EOT) converts the 76-MHz, 2-ps optical pulse train into an RF pulse train, which is then divided into two branches. One bran ...
... The experimental setup of the time-lens source synchronized to a Ti:Sa mode-locked laser (Mira 900, Coherent) is shown in Fig. 1 (dotted box). The GaAs photodetector (ET-4000, EOT) converts the 76-MHz, 2-ps optical pulse train into an RF pulse train, which is then divided into two branches. One bran ...
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.