Attosecond Transient Absorption Spectroscopy - Max
... Edgerton in the mid 1950s. Utilizing snapshot photography, chronophotography and stroboscopy temporal resolutions down to microseconds became available. For tracing dynamic processes in chemistry, transient absorption spectroscopy was used to track the absorbance of light at a certain photon energy ...
... Edgerton in the mid 1950s. Utilizing snapshot photography, chronophotography and stroboscopy temporal resolutions down to microseconds became available. For tracing dynamic processes in chemistry, transient absorption spectroscopy was used to track the absorbance of light at a certain photon energy ...
Phase Matching and Coherence of High-Order Harmonic
... beam, and a study of the effects of modulation depth in the technique of quasi-phase matching using hollow waveguides with a modulated inner diameter. Counterpropagating light is used for the first time as a tool for measuring the insitu coherence length of the harmonic generation process. Through t ...
... beam, and a study of the effects of modulation depth in the technique of quasi-phase matching using hollow waveguides with a modulated inner diameter. Counterpropagating light is used for the first time as a tool for measuring the insitu coherence length of the harmonic generation process. Through t ...
Coherent Control of Atoms and Molecules
... must take a large share of the credit. They have been friends and mentors to me, allowing me to explore just about anything that interested me. In fact, we even did a few of Henry's famous "one-day" experiments in more-or-less a day. At the same time gently nudging me in the direction they, in their ...
... must take a large share of the credit. They have been friends and mentors to me, allowing me to explore just about anything that interested me. In fact, we even did a few of Henry's famous "one-day" experiments in more-or-less a day. At the same time gently nudging me in the direction they, in their ...
Few-cycle terahertz generation and spectroscopy of nanostructures
... photoconducting antennas can be increased by using a cavity effect for the nearinfrared pump beam. The cavity is formed by a molecular beam epitaxy grown semiconductor Bragg mirror below the photoconducting layer. The optical confinement is accompanied by an electrical confinement suppressing undesired ...
... photoconducting antennas can be increased by using a cavity effect for the nearinfrared pump beam. The cavity is formed by a molecular beam epitaxy grown semiconductor Bragg mirror below the photoconducting layer. The optical confinement is accompanied by an electrical confinement suppressing undesired ...
High Harmonic Generation for Coherent Diffractive Imaging
... where only a few harmonic orders of short wavelength or a dominant photon energy are required and any optics in the harmonic beam path, such as reflection gratings, is undesirable. The novel and flexible approach of spectral extraction based on the application of the maximum entropy method to the in ...
... where only a few harmonic orders of short wavelength or a dominant photon energy are required and any optics in the harmonic beam path, such as reflection gratings, is undesirable. The novel and flexible approach of spectral extraction based on the application of the maximum entropy method to the in ...
Construction and operation - the UQ Bose
... Research on degenerate quantum gases of dilute atomic gases has become a well established field in modern physics and revealed many astonishing phenomena. The first experiments on Bose and Fermi gases at low temperatures aimed to prove the predictions of quantum mechanics on a macroscopic scale. Since ...
... Research on degenerate quantum gases of dilute atomic gases has become a well established field in modern physics and revealed many astonishing phenomena. The first experiments on Bose and Fermi gases at low temperatures aimed to prove the predictions of quantum mechanics on a macroscopic scale. Since ...
reflection properties of a gaussian laser beam from multilayer
... Figure 5.10. Comparison Of Both Reflected Gaussian Beams ( ...
... Figure 5.10. Comparison Of Both Reflected Gaussian Beams ( ...
ELEC425 lab 1
... attempt to cut the fiber with the cleaver. You are only starting a small nick, which will propagate through the fiber when you pull it. Gently, but firmly, pull the fiber to cleave it. 3. Check the quality of the cleaver by examining it under a high-power microscope. Carefully examine the end face o ...
... attempt to cut the fiber with the cleaver. You are only starting a small nick, which will propagate through the fiber when you pull it. Gently, but firmly, pull the fiber to cleave it. 3. Check the quality of the cleaver by examining it under a high-power microscope. Carefully examine the end face o ...
Partially coherent beam shaping and imaging
... non-stationary fields There are numerous randomly radiating but temporally stationary primary light sources, such as thermal sources, whose statistical properties are time-invariant. This kind of random sources can be best described using the optical coherence theory of light [1], which is based on ...
... non-stationary fields There are numerous randomly radiating but temporally stationary primary light sources, such as thermal sources, whose statistical properties are time-invariant. This kind of random sources can be best described using the optical coherence theory of light [1], which is based on ...
Multiterawatt few-cycle pulse OPCPA
... powers in 2002 [40] and Gekko VII with OPCPA preamplifier (Japan, 0.9-PW, 470-fs) [41]. There are many other facilities working to reach the Petawatt-goal. Meanwhile Petawatt scale laser amplifier systems based on Ti:sapphire gain medium are also becoming commercially available. It should be mentioned ...
... powers in 2002 [40] and Gekko VII with OPCPA preamplifier (Japan, 0.9-PW, 470-fs) [41]. There are many other facilities working to reach the Petawatt-goal. Meanwhile Petawatt scale laser amplifier systems based on Ti:sapphire gain medium are also becoming commercially available. It should be mentioned ...
light sources for optical fibers
... could be sent through a fiber and distinguished at the far end. In such a case, the system may be limited not by how fast the source can be turned on and off or by the speed of response of the detector, but by the differential time delay of the fiber. This smearing of pulses can be remedied through ...
... could be sent through a fiber and distinguished at the far end. In such a case, the system may be limited not by how fast the source can be turned on and off or by the speed of response of the detector, but by the differential time delay of the fiber. This smearing of pulses can be remedied through ...
Coatings - CVI Laser Optics
... Fabry-Perot interferometer. These are described in most elementary optics and physics texts. In all of these demonstrations, light from a source is split in some way to produce two sets of wavefronts. These wavefronts are recombined with a variable path difference between them. Whenever the path dif ...
... Fabry-Perot interferometer. These are described in most elementary optics and physics texts. In all of these demonstrations, light from a source is split in some way to produce two sets of wavefronts. These wavefronts are recombined with a variable path difference between them. Whenever the path dif ...
Near-field thermal transport in a nanotip under laser irradiation
... We report on a systematic study of highly enhanced optical field and its induced thermal transport in nanotips under laser irradiation. The effects on electric field distribution caused by curvature radius, tip aspect ratio, and polarization angle of the incident laser are studied. Our Poynting vect ...
... We report on a systematic study of highly enhanced optical field and its induced thermal transport in nanotips under laser irradiation. The effects on electric field distribution caused by curvature radius, tip aspect ratio, and polarization angle of the incident laser are studied. Our Poynting vect ...
Ans: Optical Fiber Communication System
... transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, where they permit transmission over longer distances and ...
... transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, where they permit transmission over longer distances and ...
Concentration effect of carbon nanotube based saturable
... Passively mode-locked erbium-doped fiber laser (MLEDFL) enables to generate optical pulses in picosecond and femtosecond regimes [1,2] and is often initiated by nonlinear optical elements with intensity-dependent response to favor optical pulsation over continuous–wave lasing [3]. The optical nonlin ...
... Passively mode-locked erbium-doped fiber laser (MLEDFL) enables to generate optical pulses in picosecond and femtosecond regimes [1,2] and is often initiated by nonlinear optical elements with intensity-dependent response to favor optical pulsation over continuous–wave lasing [3]. The optical nonlin ...
Ozone imaging and detection using photofragmentation laser
... emitted photons by the molecule have the same wavelength as the absorbed incident photons. If the excited molecule ends up in a high vibrational energy level after electronic excitation, then the excess vibrational energy could be lost by intermolecular collisions, before the molecule relaxes to the ...
... emitted photons by the molecule have the same wavelength as the absorbed incident photons. If the excited molecule ends up in a high vibrational energy level after electronic excitation, then the excess vibrational energy could be lost by intermolecular collisions, before the molecule relaxes to the ...
Cavity Optomechanics in the Quantum Regime
... Figure 1.1: Schematic of a gravitational wave detector. Arrows highlight the differential impact of a passing gravitational waves. Interferometer arms typically range from hundreds of meters to kilometers. ing Michelson-type laser interferometers. Gravity waves passing through the Earth would push a ...
... Figure 1.1: Schematic of a gravitational wave detector. Arrows highlight the differential impact of a passing gravitational waves. Interferometer arms typically range from hundreds of meters to kilometers. ing Michelson-type laser interferometers. Gravity waves passing through the Earth would push a ...
Single photons from single ions: quantum interference and distant ion interaction Dissertation
... In analogy to the classical computer, the quantum computer uses gates to process quantum information. There is a finite set of quantum gates that are called universal, such that an arbitrary quantum computation on any number of qubits can be generated [4]. Single qubit gates (e.g. NOT gate, Hadamard ...
... In analogy to the classical computer, the quantum computer uses gates to process quantum information. There is a finite set of quantum gates that are called universal, such that an arbitrary quantum computation on any number of qubits can be generated [4]. Single qubit gates (e.g. NOT gate, Hadamard ...
00800001a2_8.pdf
... emitted by the active medium (solid-state material, gas, or liquid dye) differs insignificantly from the radiation emitted by thermal light sources. Characteristic properties of laser radiation, such as high brightness, high temporal and spatial coherence, and narrow bandwidth, are a result of the opt ...
... emitted by the active medium (solid-state material, gas, or liquid dye) differs insignificantly from the radiation emitted by thermal light sources. Characteristic properties of laser radiation, such as high brightness, high temporal and spatial coherence, and narrow bandwidth, are a result of the opt ...
Pulsed photoacoustic techniques and glucose determination in
... The fundamental theory of photoacoustics in liquid and soft tissue was studied systematically. The distributions of photoacoustic sources in a near-infrared optical skin model were simulated by the Monte Carlo method. Expansion coefficient and specific heat of glucose solution were measured by therm ...
... The fundamental theory of photoacoustics in liquid and soft tissue was studied systematically. The distributions of photoacoustic sources in a near-infrared optical skin model were simulated by the Monte Carlo method. Expansion coefficient and specific heat of glucose solution were measured by therm ...
Correlations and Counting Statistics of an Atom Laser
... ultimate directivity and brightness, monochromaticity and phase coherence [42]. However, all these features could in principle be achieved with a thermal beam upon sufficient filtering. To tell wether or not one has a genuine atom laser, requires to measure at least its second order coherence. This ...
... ultimate directivity and brightness, monochromaticity and phase coherence [42]. However, all these features could in principle be achieved with a thermal beam upon sufficient filtering. To tell wether or not one has a genuine atom laser, requires to measure at least its second order coherence. This ...
Nd:YAG Based Laser Sources for Targeting
... incorporating a deformable bimorph mirror. A new concept for a targeting laser source, which incorporated an eye-safe wavelength, was demonstrated using a common resonator intracavity OPO design. A conversion efficiency of 40% was achieved for 36 mJ output of 1573 nm eye-safe light from a 90 mJ lase ...
... incorporating a deformable bimorph mirror. A new concept for a targeting laser source, which incorporated an eye-safe wavelength, was demonstrated using a common resonator intracavity OPO design. A conversion efficiency of 40% was achieved for 36 mJ output of 1573 nm eye-safe light from a 90 mJ lase ...
The Optical Cavity
... leads to enhanced transmission of the light through the external cavity, you will be able to see the effects of the time-dependent coupling by looking at the changes in the intensity profile of the beam as it exits the external cavity. Suppose the laser light is purely monochromatic, and has a TEM00 ...
... leads to enhanced transmission of the light through the external cavity, you will be able to see the effects of the time-dependent coupling by looking at the changes in the intensity profile of the beam as it exits the external cavity. Suppose the laser light is purely monochromatic, and has a TEM00 ...
Femtosecond filamentation in transparent media
... 3.2.6. Influence of the chirp of the input pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2.7. Self-reconstruction of filaments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... 3.2.6. Influence of the chirp of the input pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2.7. Self-reconstruction of filaments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
A controlled quantum system of individual neutral atoms
... circular Rydberg atoms from a velocity-selected atomic beam interact, one at a time, with a superconducting microwave cavity [4]. However, letting several atoms sequentially interact with the resonator field cannot be realized in the optical domain, since the lifetime of a cavity photon is typically ...
... circular Rydberg atoms from a velocity-selected atomic beam interact, one at a time, with a superconducting microwave cavity [4]. However, letting several atoms sequentially interact with the resonator field cannot be realized in the optical domain, since the lifetime of a cavity photon is typically ...
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term ""laser"" originated as an acronym for ""light amplification by stimulated emission of radiation"". The first laser was built in 1960 by Theodore H. Maiman at Hughes Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light coherently. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light. Temporal coherence can be used to produce pulses of light as short as a femtosecond.Among their many applications, lasers are used in optical disk drives, laser printers, and barcode scanners; fiber-optic and free-space optical communication; laser surgery and skin treatments; cutting and welding materials; military and law enforcement devices for marking targets and measuring range and speed; and laser lighting displays in entertainment.