Zobrazeno 1 - 10
of 123
pro vyhledávání: '"S. Jelvani"'
Publikováno v:
مجله علوم و فنون هستهای, Vol 44, Iss 2, Pp 170-176 (2023)
In this paper, the effect of various parameters on the pulse shape of the CO2 laser has been investigated. For this purpose, various parameters such as gas pressure and the length of the resonator were changed and the laser pulses shapes in each case
Externí odkaz:
https://doaj.org/article/64a72c19aded4d7e86a9b342499a14ab
Publikováno v:
مجله علوم و فنون هستهای, Vol 43, Iss 3, Pp 157-162 (2022)
This work investigates the effects of different operational parameters on the pulse shape of a homemade high repetition rate (1 kHz) pulsed CO2 laser. Various parameters such as the ratio of N2 and He in the laser gas mixture and the reflectivity of
Externí odkaz:
https://doaj.org/article/0fc0056c6170427b9cf201f783f308b3
Publikováno v:
مجله علوم و فنون هستهای, Vol 42, Iss 1, Pp 92-97 (2021)
Anti-reflective optical elements prepared on ZnSe substrates are the main optical devices in CO2 lasers. These anti-reflective coatings are used in the far-infrared region at the specified wavelength of 10600 nm. For the preparation phase of these
Externí odkaz:
https://doaj.org/article/7e187d3b6566493486dcdf823fbfb08f
Autor:
H. Hojati Rad, S. Jelvani, S. Panahibakhsh, M. Jaberi, K. Silakhori, S. A. Hashemizadeh Aghda
Publikováno v:
Journal of Russian Laser Research. 43:239-243
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be50bb67283d8add8ba7f8d3e7748268
https://doi.org/10.1007/s10946-022-10044-3
https://doi.org/10.1007/s10946-022-10044-3
Publikováno v:
Iranian Journal of Physics Research, Vol 14, Iss 3, Pp 47-52 (2014)
Laser irradiation parameters, especially the laser fluence and the number of pulses are very important factors affecting microstructures formation and improvement of the surface characteristics in different medical, electronic and the other industria
Externí odkaz:
https://doaj.org/article/c1865871b05d40d48d2375354e95a6a8
Autor:
AM Koushki, S Jelvani
Publikováno v:
Iranian Journal of Physics Research, Vol 10, Iss 3, Pp 259-264 (2010)
To obtain the maximum output power of a fast-axial-flow CW-CO2 laser, gas flow velocity can be optimized by using genetic algorithms. Our theoretical approach shows that the gas flow velocity after optimization increases the laser output power substa
Externí odkaz:
https://doaj.org/article/7e06d43bcd6140a9a882a3bcd291c81e
Publikováno v:
J Lasers Med Sci
Introduction: Spectroscopic properties of Xeloda chemodrug have been studied over varying concentrations ranging between 0.001 and 10 mg/mL, using laser-induced fluorescence (LIF) spectroscopy. The alternative photoluminescence (PL) and near infrared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82c6b2fb7b76e0ff5a8dd7fadf575c8c
https://europepmc.org/articles/PMC8837846/
https://europepmc.org/articles/PMC8837846/
Autor:
M. Shahabi, A. Moafi, Amir Jafargholi, Parviz Parvin, Solaleh Seyedi, S. Jelvani, P. Mohammadimatin, Maryam Shahbazi
Publikováno v:
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 239
In this work, the fluorescence properties of Phycocyanin (PC) and the corresponding quenching effects are investigated in attendance of human serum albumin (HSA). At first, PC is excited at 532 nm using CW SHG Nd:YAG laser, then the emission waveleng
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb890321cb7812a3643d929afd347a27
https://pubmed.ncbi.nlm.nih.gov/32470806
https://pubmed.ncbi.nlm.nih.gov/32470806
Publikováno v:
Optik. 242:167316
In this paper, bronze samples from Bam Arg World Heritage for laser cleaning with XeCl laser is investigated. The sample is analyzed before and after laser cleaning by XRD, DAX, SEM and PIXE methods to determine their surface impurities then optimum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4f153540606d692b85d14de6b5bd202
https://doi.org/10.1016/j.ijleo.2021.167316
https://doi.org/10.1016/j.ijleo.2021.167316
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