Showing papers on "Chirped pulse amplification published in 1992"
TL;DR: In this article, a parametrically amplified chirped pulses have been parametric amplified by a factor of ∼2×10 4 without bandwidth limitation in BBO crystal, and a special technique to match temporal profiles of signal and pump pulses was used.
814 citations
TL;DR: In this paper, the development of compact high-intensity laser, made possible by the technique of chirped pulse amplification, is reviewed, including the complexities of high-power laser implementation, such as the generation of short pulses, pulse cleaning, widebandwidth amplification, temporal stretching and compression, and the requirements for high average powers.
Abstract: The development of compact high‐intensity lasers, made possible by the technique of chirped pulse amplification, is reviewed. This includes the complexities of high‐power laser implementation, such as the generation of short pulses, pulse cleaning, wide‐bandwidth amplification, temporal stretching and compression, and the requirements for high‐average powers. Details of specific solid‐state laser systems are given. Some applications of these lasers to short‐pulse coherent short‐wavelength [x‐ray ultraviolet (XUV)] sources are also reviewed. This includes several nonlinear effects observed by focusing a subpicosecond laser into a gas; namely, an anomalous scaling of harmonic generation in atomic media, an upper limit on the conversion efficiency of relativistic harmonics in a plasma, and the observation of short‐pulse self‐focusing and multifoci formation. Finally, the effects of large ponderomotive pressures (100 Mbars) in short‐pulse high‐intensity laser–plasma interactions are discussed, with relevance both to recombination x‐ray lasers and a novel method of igniting thermonuclear fusion.
153 citations
TL;DR: In this article, the authors reported the generation of 200-fs optical pulses at 1.053 µm using two stages of fiber-grating compressors using nonlinear birefringence in the second fiber.
Abstract: We report the generation of 200-fs optical pulses at 1.053 μm using two stages of fiber-grating compressors. The usual intensity background associated with this compression technique has been reduced to less than 10−7 of the peak intensity by using nonlinear birefringence in the second fiber. These pulses are used at the front end of our chirped-pulse amplification terawatt Nd:glass laser system.
64 citations
TL;DR: In this paper, the focusing properties of chirped pulse amplification scheme were measured and the imperfection in pulse compression gratings was identified as one of the major limitations of the scheme.
15 citations
TL;DR: In this paper, an alexandrite pumped, Nd:glass regenerative amplifier is used with chirped pulse amplification to produce millijoule, picosecond pulses.
15 citations
TL;DR: In this paper, the chirped pulses are compressed to 1.2 psec with an energy of 24 J using large holographic gold-coated 1740 lines/mm diffraction gratings.
Abstract: Pulses of 20 TW have been generated at 1064 nm using the chirped pulse amplification technique coupled to a 90 mm output aperture Nd–silicate glass amplification line. The chirped pulses are compressed to 1.2 psec with an energy of 24 J using large holographic gold‐coated 1740 lines/mm diffraction gratings. In a first step, the beam is focused by an aspherical lens, but the maximum measured irradiance is limited to 1018 W/cm2 by self‐focusing effects in the air path and in the lens. Higher values up to 1019 W/cm2 will need propagation of the compressed beam in vacuum and focusing by reflective optics. The first experiments deal with laser–plasma coupling, with emphasis on the power contrast ratio. Further plans include multiple Compton scattering and x‐ray laser generation. Theoretical works on ionization processes and particle accelerator are also presented.
12 citations
17 Feb 1992
TL;DR: In this article, a series of alexandrite pumped Cr:LiSrAlF6 and Nd:glass regenerative amplifiers and power amplifiers were developed.
Abstract: We have developed a series of alexandrite pumped Cr:LiSrAlF6 and Nd:glass regenerative amplifiers and power amplifiers. Millijoule, picosecond pulses have been produced.
1 citations
TL;DR: In this article, the temporal structure of spectrally filtered chirped pulses with a view to a quantitative evaluation of the self-phase modulation in CHAMs was studied.
1 citations