Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Parshotam Dass Gupta"'
Publikováno v:
Optics Communications. 389:165-169
A new optical design of tiled single grating pulse compressor has been proposed, set-up and studied. The parametric space, i.e. the laser beam diameters that can be accommodated in the pulse compressor for the given range of compression lengths, has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::733f21d5e23df290bb123bb3744522a0
https://doi.org/10.1016/j.optcom.2016.11.068
https://doi.org/10.1016/j.optcom.2016.11.068
Autor:
A. A. Rupasov, Y. B. S. R. Prasad, S. Barnwal, E. A. Bolkhovitinov, P. A. Naik, Parshotam Dass Gupta
Publikováno v:
Journal of Russian Laser Research. 36:395-402
We develop an interactive procedure for estimating the self-generated magnetic fields in laser-produced plasmas using MATLAB software. We use this procedure for analyzing the digital images recorded employing a three-channel polarointerferometer to e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ce2cdca64d5abc1b560cdeabc852b60
https://doi.org/10.1007/s10946-015-9516-x
https://doi.org/10.1007/s10946-015-9516-x
Publikováno v:
Applied Physics B. 120:149-154
Generation of a quasi-mono-energetic electron beam with peak energy ~3 MeV and full cone divergence angle of ~3° is observed in the interaction of 45 fs, 3 TW Ti:sapphire laser beam incident on a planar carbon target surface at grazing incidence. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad38b6de95213e07b14ddb2ff9fb4d35
https://doi.org/10.1007/s00340-015-6115-z
https://doi.org/10.1007/s00340-015-6115-z
This chapter deals with the state of materials under extremely high pressure and at extremely high temperatures. The high pressure (several megabars) and temperatures (millions of degrees) that will be dealt with in this chapter, such as those presen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fabab40992bad6e8bf5a7901b765437
https://doi.org/10.1016/b978-0-12-801300-7.00014-0
https://doi.org/10.1016/b978-0-12-801300-7.00014-0
Autor:
S. Nigam, S. Barnwal, C. P. Navathe, M. L. Sharma, K. Aneesh, R. P. Kushwaha, P. A. Naik, Parshotam Dass Gupta, Y. B. S. R. Prasad, Juzer Ali Chakera, P. K. Tripathi
Publikováno v:
Applied Physics B. 117:131-139
Intense lasing had been obtained from argon plasma in the soft X-ray region from a capillary discharge plasma system. Different diagnostics have been used to characterize the lasing properties by recording the temporal, spatial, and spectral profiles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8b473eb3d3aef7f736e43bbd68587d8
https://doi.org/10.1007/s00340-014-5812-3
https://doi.org/10.1007/s00340-014-5812-3
Autor:
P. A. Naik, Manoranjan P. Singh, Juzer Ali Chakera, V. Arora, Parshotam Dass Gupta, Usha Chakravarty
Publikováno v:
Pramana. 82:365-371
Spectral analysis of K-shell X-ray emission of magnesium plasma, produced by laser pulses of 45 fs duration, focussed up to an intensity of ∼1018 W cm−2, is carried out. The plasma conditions prevalent during the emission of X-ray spectrum were i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93ebb08309606d6164be803279c57cee
https://doi.org/10.1007/s12043-014-0691-z
https://doi.org/10.1007/s12043-014-0691-z
Publikováno v:
Applied Physics A. 115:1457-1467
A simple technique, based on the interference principle, to obtain simultaneously the instantaneous electron density and temperature of ultra-short laser-excited semiconductor surface plasma is proposed and demonstrated. The interference of the incid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73206e703eeed3fe9d354dc40fca4034
https://doi.org/10.1007/s00339-013-8063-y
https://doi.org/10.1007/s00339-013-8063-y
Publikováno v:
Optics Communications. 309:15-20
A tiled grating pulse compressor in a single grating configuration has been investigated. Since it is a folded geometry, there are several geometrical constraints that restrict hard-clip-free recompression of positively chirped pulses. Therefore, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2857e7351fe2476fe488dbf2c070aa62
https://doi.org/10.1016/j.optcom.2013.06.031
https://doi.org/10.1016/j.optcom.2013.06.031
Publikováno v:
Optics Communications. 309:139-147
In this paper, we report theoretical studies on optimization of a broadband optical parametric amplifier (OPA) with enhanced output stability for chirped pulse amplification. Optimization of various signal, pump, crystal and ambient parameters has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b5beb3ed654128d0ea245b6a0d5bb8e
https://doi.org/10.1016/j.optcom.2013.07.005
https://doi.org/10.1016/j.optcom.2013.07.005
Publikováno v:
Pramana. 79:443-456
The electric field enhancement inside a nanotube irradiated by intense ultrashort laser pulse (≪1 ps) is calculated. The hollowness of the nanotubes determines the field enhancement and the electron density at which such structures exhibit resonanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80c0bc2fa5a6639e2957e8f8990d88a2
https://doi.org/10.1007/s12043-012-0340-3
https://doi.org/10.1007/s12043-012-0340-3