Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Zahari Y. Peshev"'
We report results of lidar studies of the atmospheric aerosols present above the city of Sofia during four episodes of wintertime Saharan dust intrusions in the last decade. The optical and microphysical properties of the detected aerosols, as well a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd5f29a304b02bd1951b3aa5a8313c9a
Autor:
Atanaska D. Deleva, Tanja N. Dreischuh, Anatoli Chaikovsky, Zahari Y. Peshev, Anton Fedarenka, Alexander Slesar
We report the lidar observations of a prolonged unusual event of atmospheric aerosol load extending up to about 15 km above the city of Sofia, Bulgaria. Based on the results obtained and air-transport modeling data, we show that the observed diffused
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86aa2cbfad09480c63621f0d2650fc2c
Autor:
Atanaska D. Deleva, Georgi Kolarov, Dimitar Stoyanov, Evgeni Donev, Danko Ivanov, Ivan Grigorov, Nikolay Kolev, Zahari Y. Peshev
Publikováno v:
SPIE Proceedings.
In this work we present results of lidar remote sensing of aerosol layers in the atmosphere above Sofia during an episode of Sahara dust transport, 02-07 April, 2012. The investigations were made using two lidar systems, one equipped with a CuBr-vapo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91e86df019c13a4dafef37ace9e41036
https://doi.org/10.1117/12.2014154
https://doi.org/10.1117/12.2014154
Autor:
Atanaska D. Deleva, Elena P. Vidolova-Angelova, Dimitar A. Angelov, Zdravka I. Aneva, Zahari Y. Peshev
Publikováno v:
SPIE Proceedings.
Light-induced absorption in pure B12TiO20 crystal and crystals doped with Nd, Mo, W, and V was investigated using the pump-probe method. Q-switched frequency-doubled (532 nm) YAG:Nd laser with pulse duration approximately 20 ns was applied for sample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd223bc8b4e78c0b819ebe2f2c866abf
https://doi.org/10.1117/12.425140
https://doi.org/10.1117/12.425140
Autor:
Zahari Y. Peshev, Atanaska D. Deleva
Publikováno v:
SPIE Proceedings.
A self-seeded coupled-cavity pulsed tunable laser using a novel competitive active mirror (CAM) is reported. The operation of CAM is demonstrated and studied experimentally in the case of pulsed dye laser, pumped by a frequency-doubled Nd:YAG laser,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23246554841f120eeb390dab5746dd39
https://doi.org/10.1117/12.425110
https://doi.org/10.1117/12.425110
Publikováno v:
SPIE Proceedings.
A sliding-discharge directly-excited pulsed atomic fluorine laser was realized for the first time and investigated experimentally. The atomic fluorine was produced by dissociation of F2 in a He:F2 mixture by a fast-pulsed electrical discharge. The op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d514796816ff7af117908abfc3d4991
https://doi.org/10.1117/12.425111
https://doi.org/10.1117/12.425111
Autor:
Atanaska D. Deleva, Zdravka I. Aneva, Boiko K. Kaprielov, Zahari Y. Peshev, Elena P. Vidolova-Angelova, Dimitar A. Angelov
Publikováno v:
SPIE Proceedings.
A comparative experimental study of two versions of an injection-seeding laser system containing a slave laser (SL) with a ring-linear dual-channel competitive cavity and with a simple ring one is presented. The spectral purity of the SL output radia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31f629f27452257cfd10333282d3b8a0
https://doi.org/10.1117/12.347598
https://doi.org/10.1117/12.347598
Autor:
Elena P. Vidolova-Angelova, Zahari Y. Peshev, Zdravka I. Aneva, Atanaska D. Deleva, Dimitar A. Angelov
Publikováno v:
SPIE Proceedings.
A laser cavity containing highly selective reflector based on a multipass grazing-incidence diffraction grating is described. The operation of the multipass selective reflector (MPSR) is demonstrated and studied experimentally in the case of pulsed d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5c8dedd3d77765eeaecaf27e1ab0d61
https://doi.org/10.1117/12.347597
https://doi.org/10.1117/12.347597
Publikováno v:
SPIE Proceedings.
The results of pulsed laser deposition of Ti-doped and undoped sapphire ((alpha) -Al2O3) thin films are presented. Three types of doped targets are utilized -- monocrystalline and two different ceramics synthesized in vacuum and H2 ambient, respectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6a6456b4f95cd899111cfc21e107c38
https://doi.org/10.1117/12.273735
https://doi.org/10.1117/12.273735