Adiabatic creation of coherent superposition states in atomic beams
... the peak intensity (i.e., the square of the Rabi frequency) and the pulse duration T. A highly desirable property for any such technique is insensitivity to various characteristics of the pulses that produce the excitation. Such things as laser phase or pulse duration and intensity (pulse area), for ...
... the peak intensity (i.e., the square of the Rabi frequency) and the pulse duration T. A highly desirable property for any such technique is insensitivity to various characteristics of the pulses that produce the excitation. Such things as laser phase or pulse duration and intensity (pulse area), for ...
Femtosecond Laser Pulses: Linear Properties
... leading to precise microstructures in a whole variety of solid state materials. Finally the high pulse repetition rate is exploited for example in telecommunication applications. These topics have been reviewed recently in (Keller, 2003). The biannual international conference series “Ultrafast Pheno ...
... leading to precise microstructures in a whole variety of solid state materials. Finally the high pulse repetition rate is exploited for example in telecommunication applications. These topics have been reviewed recently in (Keller, 2003). The biannual international conference series “Ultrafast Pheno ...
Fabrication of functional surfaces using ultrashort laser pulse ablation
... with replication methods. It is well known that sufficiently small surface structures reflect and deflect light in a way that can not be handled with geometrical optics. Naturally, when considering materials like metals, only reflected waves are observed. If the periodicity of the structures is in t ...
... with replication methods. It is well known that sufficiently small surface structures reflect and deflect light in a way that can not be handled with geometrical optics. Naturally, when considering materials like metals, only reflected waves are observed. If the periodicity of the structures is in t ...
Simultaneous spatial and temporal focusing: A route towards
... Ultrashort pulse lasers enable reliable and versatile high precision ablation and surface processing of various materials such as metals, polymers and semiconductors. However, when modifications deep inside the bulk of transparent media are required, nonlinear pulse material interactions can decreas ...
... Ultrashort pulse lasers enable reliable and versatile high precision ablation and surface processing of various materials such as metals, polymers and semiconductors. However, when modifications deep inside the bulk of transparent media are required, nonlinear pulse material interactions can decreas ...
Huge density-dependent blueshift of indirect excitons in biased
... positions of these two cases do not coincide because there is a small cw leakage component from our laser, which has intensity proportional to the main pulse intensity.兲 There are two possible mechanisms for the observed redshift at moderate density. First, in addition to the density-dependent renor ...
... positions of these two cases do not coincide because there is a small cw leakage component from our laser, which has intensity proportional to the main pulse intensity.兲 There are two possible mechanisms for the observed redshift at moderate density. First, in addition to the density-dependent renor ...
Optical feedback stabilization of photonic microwave generation
... P1 dynamics exhibits a regeneration of the optical injection and oscillation sidebands equally separated from the regeneration by the oscillation frequency. Owing to the red-shifted cavity resonance enhancement [5–7], the lower oscillation sideband is typically much stronger than the upper one. Thes ...
... P1 dynamics exhibits a regeneration of the optical injection and oscillation sidebands equally separated from the regeneration by the oscillation frequency. Owing to the red-shifted cavity resonance enhancement [5–7], the lower oscillation sideband is typically much stronger than the upper one. Thes ...
Theory of quantum light emission from a strongly
... “off-resonant excitation of the cavity mode” and a “triple peak” during the strong coupling regime. Since these observations are unusual, it has been speculated that they indicate a clear deviation from a simple artificial atom model of the QD; this view has since been echoed by additional experimen ...
... “off-resonant excitation of the cavity mode” and a “triple peak” during the strong coupling regime. Since these observations are unusual, it has been speculated that they indicate a clear deviation from a simple artificial atom model of the QD; this view has since been echoed by additional experimen ...
Model for ultrashort laser pulse-induced ionization dynamics in
... frequently limit their laser-plasma models to a single rate equation for the conduction band electron density [7,9] or in some recent cases multiple rate equations for the same purpose [10–14]. These models use phenomenological approaches for laser energy absorption by the carriers and are coupled t ...
... frequently limit their laser-plasma models to a single rate equation for the conduction band electron density [7,9] or in some recent cases multiple rate equations for the same purpose [10–14]. These models use phenomenological approaches for laser energy absorption by the carriers and are coupled t ...
Ultrafast adaptive optical near-field control
... Ultrashort laser pulses excite the optical near field of the nanostructure over a range of frequencies and the superposition of these field distributions with different frequencies determines the actual local field evolution. Hence, the spectral phase of the illuminating laser pulses influences the ...
... Ultrashort laser pulses excite the optical near field of the nanostructure over a range of frequencies and the superposition of these field distributions with different frequencies determines the actual local field evolution. Hence, the spectral phase of the illuminating laser pulses influences the ...
Chapter 10 Pulse Characterization
... Chapter 10 Pulse Characterization Characterization of ultrashort laser pulses with pulse widths greater than 20 ps can be directly performed electronically using high speed photo detectors and sampling scopes. Photo detectors with bandwidth of 100 GHz are available. For shorter pulses usually some t ...
... Chapter 10 Pulse Characterization Characterization of ultrashort laser pulses with pulse widths greater than 20 ps can be directly performed electronically using high speed photo detectors and sampling scopes. Photo detectors with bandwidth of 100 GHz are available. For shorter pulses usually some t ...
Mode-locking
Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12 s) or femtoseconds (10−15 s).The basis of the technique is to induce a fixed-phase relationship between the longitudinal modes of the laser's resonant cavity. The laser is then said to be 'phase-locked' or 'mode-locked'. Interference between these modes causes the laser light to be produced as a train of pulses. Depending on the properties of the laser, these pulses may be of extremely brief duration, as short as a few femtoseconds.