Laser Cooling and Trapping of Metastable Neon and Applications to
... with the use of a Zeeman slower, both to continuously slow a sodium atomic beam. This was the first use of a Zeeman slower, which is a tapered solenoid that produces a spatially varying magnetic field. This magnetic field is used to Zeeman shift the atomic transition frequency to match the velocity ...
... with the use of a Zeeman slower, both to continuously slow a sodium atomic beam. This was the first use of a Zeeman slower, which is a tapered solenoid that produces a spatially varying magnetic field. This magnetic field is used to Zeeman shift the atomic transition frequency to match the velocity ...
Generation of Repumping Light for Ultracold Strontium Experiments
... is Isat =2.4mW/cm2 [13]. Therefore, only a few milliwatts of 497nm light are needed, but the source must be precise and stable, and have linewidth narrower than 2.3MHz. Free-running laser diodes are too imprecise for a repumping source. Gas lasers ...
... is Isat =2.4mW/cm2 [13]. Therefore, only a few milliwatts of 497nm light are needed, but the source must be precise and stable, and have linewidth narrower than 2.3MHz. Free-running laser diodes are too imprecise for a repumping source. Gas lasers ...
The Optical Cavity
... to different cavity modes (longitudinal and transverse) at different points in time. Remember that resonant coupling will only occur when at least one of the frequency components of the laser light matches at least one of the mode frequencies of the external cavity (which are changing in time due to ...
... to different cavity modes (longitudinal and transverse) at different points in time. Remember that resonant coupling will only occur when at least one of the frequency components of the laser light matches at least one of the mode frequencies of the external cavity (which are changing in time due to ...
Continuous-wave optical parametric oscillators and frequency conversion sources from
... High-power, continuous-wave (cw) optical parametric oscillators (OPOs), from the ultraviolet (UV) and visible to the near- and mid-infrared (IR) wavelength range, are of interest for a variety of applications such as spectroscopy, tracegas detection and remote sensing. As such, it is desired to inve ...
... High-power, continuous-wave (cw) optical parametric oscillators (OPOs), from the ultraviolet (UV) and visible to the near- and mid-infrared (IR) wavelength range, are of interest for a variety of applications such as spectroscopy, tracegas detection and remote sensing. As such, it is desired to inve ...
PHOTONIC CRYSTALS WITH ACTIVE ORGANIC MATERIALS by
... Table 3-1 Energy conversion efficiency samples with R6G as the gain medium. ...
... Table 3-1 Energy conversion efficiency samples with R6G as the gain medium. ...
High-Temperature Operation of Terahertz Quantum Cascade Laser
... because of electron transit time and resistance–capacitance limitations [2], [3]. On the other hand, photonic devices generating THz radiation at room temperature are limited to optically pumped gas lasers, free-electron lasers, and the frequency down-conversion systems that require high-power laser ...
... because of electron transit time and resistance–capacitance limitations [2], [3]. On the other hand, photonic devices generating THz radiation at room temperature are limited to optically pumped gas lasers, free-electron lasers, and the frequency down-conversion systems that require high-power laser ...
Laser cooling in thulium-doped solids
... achieve net cooling in such a system, the host must be pure (i.e. low parasitic absorption), the transition from levels E2 to E0 must be primarily radiative (i.e. high quantum efficiency) and the fluorescence must be efficiently extracted from the host. Each of these issues will be addressed in Chap ...
... achieve net cooling in such a system, the host must be pure (i.e. low parasitic absorption), the transition from levels E2 to E0 must be primarily radiative (i.e. high quantum efficiency) and the fluorescence must be efficiently extracted from the host. Each of these issues will be addressed in Chap ...
Attosecond real time observation of ionization and electron
... light wave-cycles within the laser pulse rather than to its intensity envelope desire for full control of the optical waveform, even adjustment of the time-dependant polarization state of the pulse field can be required. Intense ultrashort waveforms of light that can be produced with an exactly pred ...
... light wave-cycles within the laser pulse rather than to its intensity envelope desire for full control of the optical waveform, even adjustment of the time-dependant polarization state of the pulse field can be required. Intense ultrashort waveforms of light that can be produced with an exactly pred ...
Single and double bosonic stimulation of THz emission in polaritonic systems
... 1012 cm22 9,25. At the same time, experimental studies29, indicate that the Mott transition occurs gradually within the interval of the exciton density from ,1010 cm22 to ,1011 cm22. Thus, the value of critical concentration shown in figures 2–6 should be considered as an estimate, and can, in princ ...
... 1012 cm22 9,25. At the same time, experimental studies29, indicate that the Mott transition occurs gradually within the interval of the exciton density from ,1010 cm22 to ,1011 cm22. Thus, the value of critical concentration shown in figures 2–6 should be considered as an estimate, and can, in princ ...
Single photon detection based devices and techniques for pulsed
... range of a target can be calculated based on the measured flight time of a laser pulse to and from the target. The amount of photons in an optical pulse sent by a TOF rangefinder to a target is typically in the range from millions to billions (for example a commonly used 10 W, 3 ns, 850 nm laser pul ...
... range of a target can be calculated based on the measured flight time of a laser pulse to and from the target. The amount of photons in an optical pulse sent by a TOF rangefinder to a target is typically in the range from millions to billions (for example a commonly used 10 W, 3 ns, 850 nm laser pul ...
Chapter 12 Laser Cavities and Microcavities: Vertical Cavity Surface
... condition (and therefore the threshold gain) and also the allowed modes of the cavity. The cavity we considered was a simple Fabry-Perot cavity. For more complex cavities, such as the VCSEL cavity, one needs better and more sophisticated methods. In the next Section, we will introduce the S-matrix a ...
... condition (and therefore the threshold gain) and also the allowed modes of the cavity. The cavity we considered was a simple Fabry-Perot cavity. For more complex cavities, such as the VCSEL cavity, one needs better and more sophisticated methods. In the next Section, we will introduce the S-matrix a ...
A high finesse optical resonator for cavity QED experiments
... our field are ions [Lieb03], neutral atoms, even “artificial” atoms (quantum dots). Besides the experimental challenge to store them, we need to control their quantum states. Here, the greatest difficulty is the preservation of quantum coherence. Any coherent superposition of states must last much l ...
... our field are ions [Lieb03], neutral atoms, even “artificial” atoms (quantum dots). Besides the experimental challenge to store them, we need to control their quantum states. Here, the greatest difficulty is the preservation of quantum coherence. Any coherent superposition of states must last much l ...
Laser cooling of trapped ions - Quantum Optics and Spectroscopy
... respect to a single point in space and are therefore used for single-ion experiments or for the confinement of large centrosymmetric ion clouds. Both the Paul and the Penning trap provide a potential that is described by harmonic oscillation in all three dimensions. The axial motion in a Penning tra ...
... respect to a single point in space and are therefore used for single-ion experiments or for the confinement of large centrosymmetric ion clouds. Both the Paul and the Penning trap provide a potential that is described by harmonic oscillation in all three dimensions. The axial motion in a Penning tra ...
Development of a Tm3+-doped Fluoride Glass - DORAS
... constructed in this work has an operating wavelength of X = 2.3 n.m, which corresponds to an absorption band of many hydrocarbon gases. The thulium-doped fibre has been fully characterised in terms of absorption, fluorescence and fluorescence lifetimes. These data were then used to choose a pump las ...
... constructed in this work has an operating wavelength of X = 2.3 n.m, which corresponds to an absorption band of many hydrocarbon gases. The thulium-doped fibre has been fully characterised in terms of absorption, fluorescence and fluorescence lifetimes. These data were then used to choose a pump las ...
Bertolotti M. The history of the laser
... technology (laser drilling of materials, geodesic measurements, newspaper printing). Lasers come in different shapes, sizes and prices, and go under different names such as ruby (the first to operate), helium–neon, argon, semiconductor laser and others. Notwithstanding their popularity, very few people ...
... technology (laser drilling of materials, geodesic measurements, newspaper printing). Lasers come in different shapes, sizes and prices, and go under different names such as ruby (the first to operate), helium–neon, argon, semiconductor laser and others. Notwithstanding their popularity, very few people ...
electromagnetically induced transparency - IAP TU
... To explain the basic idea and applications of EIT, an equivalent picture to interfering transition pathways is provided by the concept of laser-dressed states. In terms of quantum mechanics, the dressed states are the eigenstates of the quantum system, including strong interaction with driving radia ...
... To explain the basic idea and applications of EIT, an equivalent picture to interfering transition pathways is provided by the concept of laser-dressed states. In terms of quantum mechanics, the dressed states are the eigenstates of the quantum system, including strong interaction with driving radia ...
Fabrication of functional surfaces using ultrashort laser pulse ablation
... industry. Added to the increase of laser power, the decreasing duration of optical pulses has been one of the major aims in laser development. Although the first pulsed lasers with pulse length in the femtosecond (fs) range were manufactured a couple of decades ago, they are still widely studied. No ...
... industry. Added to the increase of laser power, the decreasing duration of optical pulses has been one of the major aims in laser development. Although the first pulsed lasers with pulse length in the femtosecond (fs) range were manufactured a couple of decades ago, they are still widely studied. No ...
Portable Sensing Field Device
... yourself, are invaluable. The fact that laser range finders are now commercially available for relatively low prices does not change the complexity of building one yourself. Time-of-flight based rangefinders are extremely complex and require the designers to be extremely precise in their actions. T ...
... yourself, are invaluable. The fact that laser range finders are now commercially available for relatively low prices does not change the complexity of building one yourself. Time-of-flight based rangefinders are extremely complex and require the designers to be extremely precise in their actions. T ...
High-resolution laser spectroscopy and Zeeman effect of nitrate radical
... The nitrate radical (NO3) is one of the important intermediate species in various chemical reactions involving nitrogen oxides and ozone [1]. In the ancient time the NO3 was identified by a significant visible absorption, and this absorption system is now well known to correspond to an optically all ...
... The nitrate radical (NO3) is one of the important intermediate species in various chemical reactions involving nitrogen oxides and ozone [1]. In the ancient time the NO3 was identified by a significant visible absorption, and this absorption system is now well known to correspond to an optically all ...
Topological pumping over a photonic Fibonacci quasicrystal Please share
... visible to an optical microscope, as seen in Fig. 1(b). To study the dynamics of light propagating within the system, a continuous-wave laser beam is injected into one of the waveguides in the array, allowed to propagate along it, and measured at the output, as illustrated in Fig. 1(c). The intensit ...
... visible to an optical microscope, as seen in Fig. 1(b). To study the dynamics of light propagating within the system, a continuous-wave laser beam is injected into one of the waveguides in the array, allowed to propagate along it, and measured at the output, as illustrated in Fig. 1(c). The intensit ...
Title Visible to near infrared conversion in Ce3+-Yb3+ Co
... 0.1兲 were prepared by using reagent grade Y2O3 共99.99%兲, Al2O3 共99.99%兲, CeO2 共99.99%兲, and Yb2O3 共99.99%兲 as starting materials. The powders were mixed well with tetraethyl orthosilicate 共0.5 wt %兲 in an alumina mortar to facilitate solid state reaction, pressed into a pellet of 20 mm diameter and ...
... 0.1兲 were prepared by using reagent grade Y2O3 共99.99%兲, Al2O3 共99.99%兲, CeO2 共99.99%兲, and Yb2O3 共99.99%兲 as starting materials. The powders were mixed well with tetraethyl orthosilicate 共0.5 wt %兲 in an alumina mortar to facilitate solid state reaction, pressed into a pellet of 20 mm diameter and ...
Three-Dimensional Simulation of Vertical-Cavity Surface
... Therefore it is essential to use materials with large enough index contrast to achieve the necessary feedback level. A second stringent condition on mirror formation is the need for matching the lattice constants to avoid mechanical stress in the DBRs. These two restrictions usually demand quaternar ...
... Therefore it is essential to use materials with large enough index contrast to achieve the necessary feedback level. A second stringent condition on mirror formation is the need for matching the lattice constants to avoid mechanical stress in the DBRs. These two restrictions usually demand quaternar ...
A very convenient setup to generate intense VUV coherent light at
... cell at room temperature, we have focused our attention on an experimental optical arrangement which allows precise measurements of the VUV intensity as a function of the UV and visible pump beam intensities. The schematic diagram of our experiment is given in fig.3. A commercial pulsed Nd:YAG laser ...
... cell at room temperature, we have focused our attention on an experimental optical arrangement which allows precise measurements of the VUV intensity as a function of the UV and visible pump beam intensities. The schematic diagram of our experiment is given in fig.3. A commercial pulsed Nd:YAG laser ...
Polariton traps in semiconductor microcavities
... 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 dispersion relation on which the polaritons sit. The parametric interaction possesses both real and ima ...
... 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 dispersion relation on which the polaritons sit. The parametric interaction possesses both real and ima ...
Investigation of the characteristic properties of high - Prof. Shih
... -90 < Z max < -80 before it changes direction and returns to the core. The duration of this return is different in each case. As indicated on each plot, the electron trajectories under the two-color laser field with a time delay of t = 1.0T2, figure 1(c), has the most extended first return time, about ...
... -90 < Z max < -80 before it changes direction and returns to the core. The duration of this return is different in each case. As indicated on each plot, the electron trajectories under the two-color laser field with a time delay of t = 1.0T2, figure 1(c), has the most extended first return time, about ...
Laser pumping
Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. The energy is absorbed in the medium, producing excited states in its atoms. When the number of particles in one excited state exceeds the number of particles in the ground state or a less-excited state, population inversion is achieved. In this condition, the mechanism of stimulated emission can take place and the medium can act as a laser or an optical amplifier. The pump power must be higher than the lasing threshold of the laser.The pump energy is usually provided in the form of light or electric current, but more exotic sources have been used, such as chemical or nuclear reactions.