en20161026_pm_lzh_biopace_final
... Further fields of application are envisaged With this altered approach not only an improved treatment of cardiac arrhythmia will be possible. At a later stage, a biohybrid Editing: Dr. Nadine Tinne | Marketing & Communications | +49 511 2788-238 | [email protected] Laser Zentrum Hannover e.V. | Hollerit ...
... Further fields of application are envisaged With this altered approach not only an improved treatment of cardiac arrhythmia will be possible. At a later stage, a biohybrid Editing: Dr. Nadine Tinne | Marketing & Communications | +49 511 2788-238 | [email protected] Laser Zentrum Hannover e.V. | Hollerit ...
Vacuum Chamber Design for a Magneto
... Laser cooling works by reducing the speed of atoms, which also reduces their temperature. It exploits the fact that atoms are able to absorb energy only in specific quantized amounts determined by their internal structure. An atom that collides with a photon can only absorb its energy and enter an e ...
... Laser cooling works by reducing the speed of atoms, which also reduces their temperature. It exploits the fact that atoms are able to absorb energy only in specific quantized amounts determined by their internal structure. An atom that collides with a photon can only absorb its energy and enter an e ...
Self-rotation of resonant elliptically polarized light in collision
... was experimentally studied in the vicinity of Rb resonance lines with broad-band pulsed dye laser radiation. In Ref. [28], SR was studied with a narrow-band cw laser on the potassium D1 line. Helium buffer gas was used to broaden the transition, so that the effects of hyperfine structure could be ne ...
... was experimentally studied in the vicinity of Rb resonance lines with broad-band pulsed dye laser radiation. In Ref. [28], SR was studied with a narrow-band cw laser on the potassium D1 line. Helium buffer gas was used to broaden the transition, so that the effects of hyperfine structure could be ne ...
Rayleigh scattering by gas molecules: why is the sky blue?
... molecule to oscillate at the frequency and in the direction of its electric field whereas the heavier nucleus remains essentially stationary. The molecule is therefore an oscillating charge dipole and, if it is spherically symmetric, we expect the amplitude of oscillation of the electrons to be inde ...
... molecule to oscillate at the frequency and in the direction of its electric field whereas the heavier nucleus remains essentially stationary. The molecule is therefore an oscillating charge dipole and, if it is spherically symmetric, we expect the amplitude of oscillation of the electrons to be inde ...
Laser spectroscopy and quantum optics
... frequency chains reaching into the visible spectrum. Traditional harmonic laser frequency chains are large and complex, and they are typically designed to measure just one particular optical frequency. In essence, such a chain synthesizes a high frequency, starting from a microwave Cs atomic clock, ...
... frequency chains reaching into the visible spectrum. Traditional harmonic laser frequency chains are large and complex, and they are typically designed to measure just one particular optical frequency. In essence, such a chain synthesizes a high frequency, starting from a microwave Cs atomic clock, ...
Double-pass acousto-optic modulator system
... fiber. This presents a challenge when the frequency of the light being injected into the fiber is ramped with AOMs, since the Bragg angle depends on the modulation frequency. The alignment problems caused by AOM frequency sweeps can be practically eliminated by using the doublepass configuration, in ...
... fiber. This presents a challenge when the frequency of the light being injected into the fiber is ramped with AOMs, since the Bragg angle depends on the modulation frequency. The alignment problems caused by AOM frequency sweeps can be practically eliminated by using the doublepass configuration, in ...
Comparison Between Nonlinear and Linear
... out on a 64 64 grid. The retrieval for the linear-spectrogram has a root mean square (rms) error of 0.005 and shows excellent agreement with the independently measured spectrum indicating a good retrieval. However, the SHG-FROG retrieval has a larger rms error of 0.05 and the spectrum retrieved from ...
... out on a 64 64 grid. The retrieval for the linear-spectrogram has a root mean square (rms) error of 0.005 and shows excellent agreement with the independently measured spectrum indicating a good retrieval. However, the SHG-FROG retrieval has a larger rms error of 0.05 and the spectrum retrieved from ...
Matlab Laser Toolbox User Manual
... It should be noted that some data fields are optional. In the case several power density distributions are defined (or measured) at specified locations z along the optical axis, an array of these data structures is constructed. Then, each entry of the array holds a pdd structure defined in Table 1, ...
... It should be noted that some data fields are optional. In the case several power density distributions are defined (or measured) at specified locations z along the optical axis, an array of these data structures is constructed. Then, each entry of the array holds a pdd structure defined in Table 1, ...
Simultaneous slow and fast light effects using in atomic vapor
... experience the negative dispersion necessary for enhancing the rotational sensitivity of the ring laser. In order for this scheme to work, the two pump fields producing Raman gain would each have to be coherent with the probe field, and have a greater intensity than the probe field. However, in prac ...
... experience the negative dispersion necessary for enhancing the rotational sensitivity of the ring laser. In order for this scheme to work, the two pump fields producing Raman gain would each have to be coherent with the probe field, and have a greater intensity than the probe field. However, in prac ...
Mode Structure of Active Resonators
... and the dispersion of the active medium(31. These interactions are, in most configurations, axially symmetric due to either the excitation mechanism or the mutual interaction of medium and axially symmetric field. For example, the propagation Gaussian a of beam through a homogeneously excitated acti ...
... and the dispersion of the active medium(31. These interactions are, in most configurations, axially symmetric due to either the excitation mechanism or the mutual interaction of medium and axially symmetric field. For example, the propagation Gaussian a of beam through a homogeneously excitated acti ...
Relativistic Channeling of a Picosecond Laser Pulse in a Near
... The study of the interaction of intense laser pulses with plasmas is relevant for a number of applications, such as particle acceleration by plasma waves [1] and the fast ignitor scheme [2] for inertial confinement fusion. These applications require the pulse to propagate over several Rayleigh lengt ...
... The study of the interaction of intense laser pulses with plasmas is relevant for a number of applications, such as particle acceleration by plasma waves [1] and the fast ignitor scheme [2] for inertial confinement fusion. These applications require the pulse to propagate over several Rayleigh lengt ...
Fiber Optics
... • Optical emitters operate on the idea that electromagnetic energy can only appear in a discrete amount known as a quantum. These quanta are called photons when the energy is radiated • Energy in one photon varies directly with the frequency • Typical optical emitters include: – Light-Emitting Diode ...
... • Optical emitters operate on the idea that electromagnetic energy can only appear in a discrete amount known as a quantum. These quanta are called photons when the energy is radiated • Energy in one photon varies directly with the frequency • Typical optical emitters include: – Light-Emitting Diode ...
Correlation Effects in Two-Electron Model Atoms in Intense Laser
... These results show that the time development of K appears to be closely related with two-electron dynamics. But, since K is not a familiar measure in photoionization studies, its role should be regarded as tentative until more experience is acquired with it. Nonetheless, it clearly already has the p ...
... These results show that the time development of K appears to be closely related with two-electron dynamics. But, since K is not a familiar measure in photoionization studies, its role should be regarded as tentative until more experience is acquired with it. Nonetheless, it clearly already has the p ...
Sample pages 1 PDF
... a link between these states through Neil Bohr’s analysis of Planck’s constant. He suggested that the constant is the product of two variables, one characteristic of the wave and the other of a particle. Thus, if the wave has a period, T, a wavelength, λ, particle energy, E, and momentum, p, Bohr sug ...
... a link between these states through Neil Bohr’s analysis of Planck’s constant. He suggested that the constant is the product of two variables, one characteristic of the wave and the other of a particle. Thus, if the wave has a period, T, a wavelength, λ, particle energy, E, and momentum, p, Bohr sug ...
Nondiffracting Light Beams for Long Ranges
... and Durnin et al. [3], and called nondiffracting beam or diffraction-free beam. The beam was generated by an optical system which consist of a ring slit and a lens. It was shown that the beam propagates up to ∼1m keeping its narrow beam width. By this method, one can ...
... and Durnin et al. [3], and called nondiffracting beam or diffraction-free beam. The beam was generated by an optical system which consist of a ring slit and a lens. It was shown that the beam propagates up to ∼1m keeping its narrow beam width. By this method, one can ...
Holographic fabrication of 3D photonic crystals using silicon based
... polymer. The pre-solution was poured into the container. After the bubbles were blown away, the pre-polymer was cured on a hot-plate at 130 °C for 90 minutes as shown in Fig. 1(b). The prism was then removed and a silicon chip was placed on the inner surface of the PDMS mold with polished sides to r ...
... polymer. The pre-solution was poured into the container. After the bubbles were blown away, the pre-polymer was cured on a hot-plate at 130 °C for 90 minutes as shown in Fig. 1(b). The prism was then removed and a silicon chip was placed on the inner surface of the PDMS mold with polished sides to r ...
13 Introduction to Free-Space Laser Communication
... and cost, when the temporal coherence of the source or the LO cannot be sufficiently controlled, or when the spatial phase characteristics of the received wave is disturbed (as in the case of atmospheric turbulence). Direct detection systems, when using optically preamplified receivers, usually have ...
... and cost, when the temporal coherence of the source or the LO cannot be sufficiently controlled, or when the spatial phase characteristics of the received wave is disturbed (as in the case of atmospheric turbulence). Direct detection systems, when using optically preamplified receivers, usually have ...
Intense, ultrashort light and dense, hot matter
... in time, amplification and compression is called chirped pulse amplification (CPA) – stretching causes the pulse to ‘chirp’, i.e. its frequency evolves as a function of ...
... in time, amplification and compression is called chirped pulse amplification (CPA) – stretching causes the pulse to ‘chirp’, i.e. its frequency evolves as a function of ...
Document
... At the time the development started, people were expecting X-rays to be generated. However, it turns out that X-rays may not be generated within this century because of the electron beam quality and the X-ray mirror's reflectivity. Recently, the U.S.A.'s National Research Council submitted a report ...
... At the time the development started, people were expecting X-rays to be generated. However, it turns out that X-rays may not be generated within this century because of the electron beam quality and the X-ray mirror's reflectivity. Recently, the U.S.A.'s National Research Council submitted a report ...
Photon pairs with coherence time exceeding 1 μs
... packets [18], narrowband single photons with a long coherence time also have applications in quantum metrology [19] and quantum state teleportation [20] based on single-photon or multiphoton interference. The recently demonstrated highly efficient EIT optical memory [21] for quantum state operation ...
... packets [18], narrowband single photons with a long coherence time also have applications in quantum metrology [19] and quantum state teleportation [20] based on single-photon or multiphoton interference. The recently demonstrated highly efficient EIT optical memory [21] for quantum state operation ...
Director of laser and plasma research center, University of Baghdad
... By: Abdelkarim Mohammed Abdelgadir, August 2006. 21 - Utilization of different laser systems to determine the optical properties of Chloroform and Rhodamine 6G thin films in nanometer scale. M.Sc. thesis submitted to Sudan University of Science and Technology by: Suleiman E. Elhadi Mohammed, Septemb ...
... By: Abdelkarim Mohammed Abdelgadir, August 2006. 21 - Utilization of different laser systems to determine the optical properties of Chloroform and Rhodamine 6G thin films in nanometer scale. M.Sc. thesis submitted to Sudan University of Science and Technology by: Suleiman E. Elhadi Mohammed, Septemb ...
Soft-x-ray laser interferometry of a pinch discharge using a tabletop... * C. H. Moreno, M. C. Marconi,
... It should be noted that in selecting the interfringe separation there is not complete freedom in the choice of the grazing incidence angle d because in combination with the length of the Lloyd’s mirror this angle also determines the maximum transverse size of the region that can be probed. Figure 2 ...
... It should be noted that in selecting the interfringe separation there is not complete freedom in the choice of the grazing incidence angle d because in combination with the length of the Lloyd’s mirror this angle also determines the maximum transverse size of the region that can be probed. Figure 2 ...
Gigahertz frequency comb offset stabilization
... comb offset stabilization is one of the preferred schemes, as it allows for phase locking without a highly-stable external optical reference. For the most common self-referencing technique based on f-to-2f interferometry, optical comb spectra spanning at least one octave are required [2]. Such ultra ...
... comb offset stabilization is one of the preferred schemes, as it allows for phase locking without a highly-stable external optical reference. For the most common self-referencing technique based on f-to-2f interferometry, optical comb spectra spanning at least one octave are required [2]. Such ultra ...
Optical modulator utilising InAs Quantum Dots grown on Si
... such structures to operate as both photodiodes and as absorption regions of avalanche photodiodes at 1300 nm [6]. For information switching and transmission, it is important to integrate a laser and a modulator on Si to exhibit high-efficiency electrically injected lasing as well as modulation. Howe ...
... such structures to operate as both photodiodes and as absorption regions of avalanche photodiodes at 1300 nm [6]. For information switching and transmission, it is important to integrate a laser and a modulator on Si to exhibit high-efficiency electrically injected lasing as well as modulation. Howe ...
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.