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Article
A method for obtaining inverted images
A method for obtaining a brightness-inverted image of opaque objects is described. The factor of conversion of images from negative into positive was up to 350% relative to the average intensity level of the i...
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Article
Some Features of Light Scattering in Optically Anisotropic Media
Experimental results on observation of the light scattering in optically anisotropic transparent media are presented. During observation at angles close to the normal to the light beam in the crystal, a period...
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Article
100-TW femtosecond laser based on parametric amplification
In experiments on the parametrical amplification of femtosecond pulses in wide-aperture DKDP crystals, a power of more than 100 TW has been reached, which is much higher than the record level achieved in such ...
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Article
New scheme of a petawatt laser based on nondegenerate parametric amplification of chirped pulses in DKDP crystals
The ultra-broadband phase matching was experimentally observed in a DKDP crystal upon parametric amplification of signal radiation with a wavelength of 911 nm in a pump field with a wavelength of 527 nm. The o...
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Article
Ionization spectrum transformation and compression of powerful femtosecond laser pulses in experiments on the propagation in gas-filled dielectric capillaries
The propagation of an intense (I≤106 W/cm2) femtosecond laser radiation with a duration of ∼100 fs through gas-filled dielectric capillaries was studied. The radiation with a power up to 0.2 TW propagates along t...
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Article
Ionization spectrum broadening and frequency blue-shift of high-intensity femtosecond laser pulses in gas-filled capillary tubes
. We report on the experimental and theoretical study of spectrum transformation and frequency blue-shift of femtosecond laser pulses with intensities up to 2×1016 W/cm2, propagating in glass capillary tubes unde...