Ultrafast solid-state lasers

French, Paul M. W.

doi:10.1080/00107519608222155

Cited by 11 publications

(5 citation statements)

References 79 publications

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“…However, the pulses produced had poor temporal behaviour with many uncontrolled and unpredictable intensity spikes. Most recent experiments use mode-locked lasers (French 1995(French , 1996 in which short pulses are produced by 'locking' a large number of laser cavity modes to a particular phase. This mode-locking can be brought about by active (opto-acoustic modulators) or passive (saturable absorbers) means.…”

Section: Oscillatorsmentioning

confidence: 99%

Atomic physics with super-high intensity lasers

1997

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We review the phenonomena which occur in multiphoton physics when the electric field of the applied laser radiation becomes comparable with the Coulomb field strength seen by an electron in the ground state of atomic hydrogen. This field is reached at an irradiance of approximately 3 × 10 16 W cm −2 . The normal perturbative photon-by-photon based picture of the interaction of individual electrons with the field is replaced by a tunnelling picture in which, in a time of the order of, or less than one optical cycle, atomic wavepackets are generated which escape the confining Coulomb potential. These wavepackets are strongly influenced by the laser, 'quiver' and may be accelerated back to the parent ion in a recollision process. Phase-coherent effects locked to the laser field become important: high harmonics are generated from these recollisions. We discuss the theory of such effects, and review progress in understanding how this quiver motion can be coherently controlled. We discuss ionization dynamics and review mechanisms by which atoms may be stabilized in very strong fields. Finally, we discuss relativistic effects which occur at very high-intensities.

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Section: Oscillatorsmentioning

confidence: 99%

Atomic physics with super-high intensity lasers

1997

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“…In order for the laser system to be functional in a variety of laser applications, such as laser radar, material processing, non-linear frequency conversion, and others, its specifications need to be met. Power, optical spectrum quality, optical pulse width, and spatial beam type are examples of typical requirements [1]- [3]. Because the output power that was directly derived from the laser oscillator was insufficient for many purposes, the output power of the laser oscillator had to be increased in order to fulfill the requirements of those applications.…”

Section: Introductionmentioning

confidence: 99%

Tracking of Gaussian pulse release length inside mode-locked semiconductor laser amplifier

Hamad Oglah,

Ibrahim Mahmood,

Basheer Adday

2023

IJEECS

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The behavior of the optical pulse release was investigated during chirped pulses amplification, which consisted of two chirped fiber Bragg grating and one semiconductor optical amplifier (SOA). This occurred when the pulse width, << carrier lifetime , as well as the effect of the length parameter on the shape and spectrum of the electric field, intensity, and phase of amplified pulses, were taken into consideration. The purpose of this research is to investigate the effect of release length on the temporal electric field laser amplifier while simultaneously generating optical pulses with the help of a mode-locked laser system semiconductor. In the scenario where τp and τc are taken into account, we discovered that the length of the release has a significant impact on the modes of the phase and the electric field.

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“…In the temporal domain, the pump-probe technique can measure deterministic processes with a time resolution determined by the pulse duration, rather than the detector speed in conventional multiframe imaging technique. The low-cost high-power ultrafast laser systems can deliver ultrafast pulses to enable dynamical studies on unprecedented femtosecond time scales (12). Many intrinsic ultrafast processes began to be explored by ultrafast measurements using optical, x-ray and electron pulses (8,(13)(14)(15).…”

Section: : Introductionmentioning

confidence: 99%

Time-Resolved X-Ray Microscopy for Materials Science

Wen

Cherukara

Holt

2019

Annu. Rev. Mater. Res.

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X-ray microscopy has been an indispensable tool to image nanoscale properties for materials research. One of its recent advances is to extend microscopic studies to the time domain for visualizing the dynamics of nanoscale phenomena. Large-scale x-ray facilities have been the powerhouse of time-resolved x-ray microscopy. Their upgrades including a significant reduction of the x-ray emittance at storage rings and fully coherent ultrashort xray pulses at free electron lasers, will lead to new developments in instrumentation and open new scientific opportunities for x-ray imaging of nanoscale dynamics with the simultaneous attainment of unprecedentedly high spatial and temporal resolutions. This review presents recent progress in and the outlook for time-resolved x-ray microscopy in the context of ultrafast nanoscale imaging and its applications to condensed matter physics and materials science.

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Ultrafast solid-state lasers

Cited by 11 publications

References 79 publications

Atomic physics with super-high intensity lasers

Atomic physics with super-high intensity lasers

Tracking of Gaussian pulse release length inside mode-locked semiconductor laser amplifier

Time-Resolved X-Ray Microscopy for Materials Science

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