1998
DOI: 10.1364/ol.23.001043
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Wave-front correction of femtosecond terawatt lasers by deformable mirrors

Abstract: Wave-front correction and focal spot improvement of femtosecond laser beams have been achieved, for the first time to our knowledge, with a deformable mirror with an on-line single-shot three-wave lateral shearing interferometer diagnostic. Wave-front distortions of a 100-fs laser that are due to third-order nonlinear effects have been compensated for. This technique, which permits correction in a straightforward process that requires no feedback loop, is also used on a 10-TW Ti:sapphire-Nd:phosphate glass las… Show more

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Cited by 101 publications
(43 citation statements)
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“…On the other hand, in the nonlinear regime, the wave-front retardation causes astigmatism (see fig.2f) and yields a larger waist in the y direction and hence less intensity (corresponding to a Strehl ratio of 53%). To improve the intensity and focused beam quality, the wave-front can be compensated using adaptive optics [11]. The uniformity of the spectral broadening and hence pulse compression over the beam profile should also be considered.…”
mentioning
confidence: 99%
“…On the other hand, in the nonlinear regime, the wave-front retardation causes astigmatism (see fig.2f) and yields a larger waist in the y direction and hence less intensity (corresponding to a Strehl ratio of 53%). To improve the intensity and focused beam quality, the wave-front can be compensated using adaptive optics [11]. The uniformity of the spectral broadening and hence pulse compression over the beam profile should also be considered.…”
mentioning
confidence: 99%
“…MMDMs were also successfully used for wavefront correction in terawatt lasers 22 and for intracavity control of high-power industrial lasers.…”
Section: -21mentioning
confidence: 99%
“…The energy at 530 nm, for a long pulse of 10-20 ns, could be as high as 5 MJ. This energy could be used to pump a CPA-type system to produce of the order of 1 MJ of energy in 10 fs on a spot size of 1/^m [5]. Such a system will have a power of the order 10 20 W or 100 exawatts with an intensity of 10 28 W/cm 2 .…”
Section: En Route To "Zettawatt"mentioning
confidence: 99%
“…The peak power in the 1990s reached 100 TW, demonstrated at JAERI Kansai. More recently, deformable mirrors have been incorporated into CPA, making it possible with low f# parabola to focus the laser power on a 1 jam spot size [5]. Present systems deliver focused intensities in the 10 20 W/cm 2 range.…”
Section: Introductionmentioning
confidence: 99%