Three key regimes of single pulse generation per round trip of all
... of selected regimes we inspect pulse evolution over 105 round-trips. We also checked that changing neither mesh width nor integration step affected the results of our simulations. The most of stable lasing regimes could be reproduced after any reasonable change of those parameters and initial condit ...
... of selected regimes we inspect pulse evolution over 105 round-trips. We also checked that changing neither mesh width nor integration step affected the results of our simulations. The most of stable lasing regimes could be reproduced after any reasonable change of those parameters and initial condit ...
Proposal for a Magneto-optical Beam Splitter for Atoms.
... microstructures [2,3] or an optical standing wave [4], ;-:/2 laser pulses [5], stimulated Raman transitions [6] and the optical Stern-Gerlach effect [7]. For microstructures the splitting is inversely proportional to the grating period and therefore limited by microfabrication techniques. The moment ...
... microstructures [2,3] or an optical standing wave [4], ;-:/2 laser pulses [5], stimulated Raman transitions [6] and the optical Stern-Gerlach effect [7]. For microstructures the splitting is inversely proportional to the grating period and therefore limited by microfabrication techniques. The moment ...
22-Test Talk
... process of beam-size measurements along the beam path— a process that is not always intuitive. M2 determination requires mapping the beam propagation in space and taking beamwidth parameters along this path to determine the deviation from the theoretical. Some standards call for 10 or more measureme ...
... process of beam-size measurements along the beam path— a process that is not always intuitive. M2 determination requires mapping the beam propagation in space and taking beamwidth parameters along this path to determine the deviation from the theoretical. Some standards call for 10 or more measureme ...
THE SEVENTH FRAMEWORK PROGRAMME
... experiments, the carrier-envelope phase of the laser system was not yet stable, so the only conclusion that could be drawn at this time Fig 3: XUV spectrum. was that the number of pulses was significantly reduced, perhaps down to 2-3 pulses. Since then, the CEP has been stabilized and the pulse dura ...
... experiments, the carrier-envelope phase of the laser system was not yet stable, so the only conclusion that could be drawn at this time Fig 3: XUV spectrum. was that the number of pulses was significantly reduced, perhaps down to 2-3 pulses. Since then, the CEP has been stabilized and the pulse dura ...
Observation of a collimated bunch of high
... We also measured the charge of the electrons emitted forward in a cone of coll 7Æ aperture along the laser axis, using a charge collector placed behind the target (and behind the quartz thin plate). We found a total charge of 0:2 nC, corresponding to 109 electrons. Since the electrons in the ...
... We also measured the charge of the electrons emitted forward in a cone of coll 7Æ aperture along the laser axis, using a charge collector placed behind the target (and behind the quartz thin plate). We found a total charge of 0:2 nC, corresponding to 109 electrons. Since the electrons in the ...
ee230-finaltalk
... Passively Mode-Locked Lasers Use of a saturable absorber (SA) in the cavity creates the pulse train. SA are materials with non-linear optical properties that attenuate low optical intensities. ...
... Passively Mode-Locked Lasers Use of a saturable absorber (SA) in the cavity creates the pulse train. SA are materials with non-linear optical properties that attenuate low optical intensities. ...
ESA-Lead
... measure the Earth’s gravitational redshift to two parts in 10^7, and test relativistic effects in the frequency comparisons of moving clocks. • Perform a null measurement of the Sun’s gravitational redshift to two parts in 10^7. • Perform differential geo potential measurements with 1 cm height re ...
... measure the Earth’s gravitational redshift to two parts in 10^7, and test relativistic effects in the frequency comparisons of moving clocks. • Perform a null measurement of the Sun’s gravitational redshift to two parts in 10^7. • Perform differential geo potential measurements with 1 cm height re ...
Chapter 6 Experiment 4: Wave Interference
... that waves usually exhibit some periodic or oscillatory nature such as the water level at a particular point on a pond steadily rising and falling as waves pass. For light (electromagnetic radiation) it is the electric and magnetic fields which oscillate in strength and direction. At visible frequen ...
... that waves usually exhibit some periodic or oscillatory nature such as the water level at a particular point on a pond steadily rising and falling as waves pass. For light (electromagnetic radiation) it is the electric and magnetic fields which oscillate in strength and direction. At visible frequen ...
Laser Modes
... with a well-defined direction, as opposed to the traditional light bulb, which emits a broad spectrum of light wavelengths in diffuse directions. (Scientifically, we call this temporal coherence—a well-defined frequency of light is emitted with a well-defined phase—and spatial coherence—the light is ...
... with a well-defined direction, as opposed to the traditional light bulb, which emits a broad spectrum of light wavelengths in diffuse directions. (Scientifically, we call this temporal coherence—a well-defined frequency of light is emitted with a well-defined phase—and spatial coherence—the light is ...
NEW INFRARED NOBLE GAS LASER TRANSITIONS BETWEEN 3y
... the laser is considered advisable in order to reduce possibilities of contamination by the backstreaming oil. The cryogenic pump is used to bring the pressure of the laser down to roughly 0.5y and the ion pumps are then used to bring the pressure down to about 10 ...
... the laser is considered advisable in order to reduce possibilities of contamination by the backstreaming oil. The cryogenic pump is used to bring the pressure of the laser down to roughly 0.5y and the ion pumps are then used to bring the pressure down to about 10 ...
An Introduction to Pulsed Dye Lasers Introduction Light amplification
... emission. If the stimulated emission is intense enough laser emission will result, as molecules rapidly drop back into their ground states. Each time a beam of light passes through the excited dye solution it "gains" intensity through spontaneous emission. Sometimes one pass is sufficient, sometimes ...
... emission. If the stimulated emission is intense enough laser emission will result, as molecules rapidly drop back into their ground states. Each time a beam of light passes through the excited dye solution it "gains" intensity through spontaneous emission. Sometimes one pass is sufficient, sometimes ...
Simultaneous Measurements of Hard X Rays and Second
... The behavior of the total x-ray energy as a function of the angle of the half-wave plate is shown in Fig. 2, where the zero angle corresponds to the condition of P polarization of the incident laser light. Each data point was obtained by integrating the charge induced by x rays on the CCD array over ...
... The behavior of the total x-ray energy as a function of the angle of the half-wave plate is shown in Fig. 2, where the zero angle corresponds to the condition of P polarization of the incident laser light. Each data point was obtained by integrating the charge induced by x rays on the CCD array over ...
Tuneable, stabilised diode lasers for compact atomic frequency
... resonance lines is limited to about 10 MHz here by the still strong pump light in the simple spectroscopic scheme implemented. A more detailed characterisation of spectral characteristics is in progress. We also evaluate the possibilities to replace the ECDL by other laser diodes like, e.g. DBR, DFB ...
... resonance lines is limited to about 10 MHz here by the still strong pump light in the simple spectroscopic scheme implemented. A more detailed characterisation of spectral characteristics is in progress. We also evaluate the possibilities to replace the ECDL by other laser diodes like, e.g. DBR, DFB ...
Giving a boost to atoms (pdf, 124 kB)
... with stimulated emission of atoms, not radiation. Unlike light, atoms cannot be created out of a vacuum, so you need a reservoir of atoms to be emitted. Inouye et al.1 prepared their input matter wave using optically induced Bragg diffraction3 of a Bose–Einstein condensate. This is a process whereby ...
... with stimulated emission of atoms, not radiation. Unlike light, atoms cannot be created out of a vacuum, so you need a reservoir of atoms to be emitted. Inouye et al.1 prepared their input matter wave using optically induced Bragg diffraction3 of a Bose–Einstein condensate. This is a process whereby ...
- Geomatics, Landmanagement and Landscape GLL
... near infrared wavelength and small incidence angle the value ρ = 0.02. If considering the length of laser pulse equal 10 ns, then calculated value PR will be presented in Joule: Pr = 1.7 · 10-4 W = 1.7 · 10-12 J = 1.7 pJ. As we see, the calculated value of received optical power is considerably smal ...
... near infrared wavelength and small incidence angle the value ρ = 0.02. If considering the length of laser pulse equal 10 ns, then calculated value PR will be presented in Joule: Pr = 1.7 · 10-4 W = 1.7 · 10-12 J = 1.7 pJ. As we see, the calculated value of received optical power is considerably smal ...
Mechanical momentum transfer to magneto
... The decay constant was taken to be 1/27ns. To obtain pulse shapes and chirp rates that match those of the experiment, the Rabi frequencies and the time-dependent phases of the pulses needed in the equations were calculated by considering the intensity and frequency modulated laser beam passing throu ...
... The decay constant was taken to be 1/27ns. To obtain pulse shapes and chirp rates that match those of the experiment, the Rabi frequencies and the time-dependent phases of the pulses needed in the equations were calculated by considering the intensity and frequency modulated laser beam passing throu ...
Laser-Energy Transfer and Enhancement of Plasma Waves and
... transfer by superradiant amplification of a short pulse by a counterpropagating pulse [2] are predicted to occur when the difference in frequency between the two pulses is equal to the plasma frequency. We studied the degenerate case, where the frequency difference is zero, which closely approximate ...
... transfer by superradiant amplification of a short pulse by a counterpropagating pulse [2] are predicted to occur when the difference in frequency between the two pulses is equal to the plasma frequency. We studied the degenerate case, where the frequency difference is zero, which closely approximate ...
a non-perturbative approach for quantum field theory
... MPI as sole parallelization Blas and lapack are required by ARPACK Numerical recipe library used for solving nonlinear algebraic equation for renormalization ...
... MPI as sole parallelization Blas and lapack are required by ARPACK Numerical recipe library used for solving nonlinear algebraic equation for renormalization ...
A new approach to sum frequency generation of single
... of suitable gain media at various wavelengths limits the spectral coverage of second harmonic generation (SHG). Another very flexible source of tunable visible light is an optical parametric oscillator, but these have the disadvantage of being complicated to operate and require high pump power sourc ...
... of suitable gain media at various wavelengths limits the spectral coverage of second harmonic generation (SHG). Another very flexible source of tunable visible light is an optical parametric oscillator, but these have the disadvantage of being complicated to operate and require high pump power sourc ...
Shear-Plate Collimation Testers Ask About Our Build-to-Print and Custom Capabilities O E M
... screen and a collimation reference line. To collimate an expanded laser beam, the tester is inserted in the beam and the collimator is adjusted until the fringes observed on the screen are parallel to the reference line. All CVI Melles Griot shear-plate modules follow the same sign convention: a con ...
... screen and a collimation reference line. To collimate an expanded laser beam, the tester is inserted in the beam and the collimator is adjusted until the fringes observed on the screen are parallel to the reference line. All CVI Melles Griot shear-plate modules follow the same sign convention: a con ...
Laser Cosmology
... Conventional cosmic acceleration mechanisms are based on the (second order) Fermi acceleration [14] and its variant, the diffusive shock acceleration [15], which is a first-order Fermi mechanism. The former is based on the energy gain of a proton or an ion when it bounces off a magnetic field domain ...
... Conventional cosmic acceleration mechanisms are based on the (second order) Fermi acceleration [14] and its variant, the diffusive shock acceleration [15], which is a first-order Fermi mechanism. The former is based on the energy gain of a proton or an ion when it bounces off a magnetic field domain ...
White Paper
... increases. Also, high temperature operation at 100 ℃ or higher is quite hard to be achieved due to the saturation of output power. In order to use this kind of temperature-sensitive device, laser operation ...
... increases. Also, high temperature operation at 100 ℃ or higher is quite hard to be achieved due to the saturation of output power. In order to use this kind of temperature-sensitive device, laser operation ...
Generation and application of a high-average- power polarized soft-x-ray laser beam
... The generation of intense polarized soft-x-ray radiation is of significant interest for numerous applications. These include the diagnostics of materials surfaces and interfaces, the characterization of soft-x-ray optical components, and the interaction of short-wavelength radiation with atomic and ...
... The generation of intense polarized soft-x-ray radiation is of significant interest for numerous applications. These include the diagnostics of materials surfaces and interfaces, the characterization of soft-x-ray optical components, and the interaction of short-wavelength radiation with atomic and ...
Speed of Light - Lawrence University
... The experimental layout is shown below. Light pulses of about 8 ns (8x10 9 s) duration are emitted at a rate of about 10/s by a pulsed nitrogen-pumped dye laser. These pulses impinge upon a beam splitter B, which reflects part of each pulse back along a distance BD to a detector D. The remaining pa ...
... The experimental layout is shown below. Light pulses of about 8 ns (8x10 9 s) duration are emitted at a rate of about 10/s by a pulsed nitrogen-pumped dye laser. These pulses impinge upon a beam splitter B, which reflects part of each pulse back along a distance BD to a detector D. The remaining pa ...
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.