Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Ahmad Khayat Jafari"'
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2019.
Metal-insulator-metal metasurfaces (MIM-M) structures can achieve near-unity absorptance at sub-wavelength volumes. A conventional approach to tune the absorption wavelength and the bandwidth of MIM-Ms is to change the geometrical parameters of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7885068e401852aca621d5624e5de182
https://doi.org/10.1117/12.2528013
https://doi.org/10.1117/12.2528013
Publikováno v:
Organic Electronics. 75:105397
Broadband image sensors are yet to produce the required color constancy for the emerging applications in artificial intelligence and neural network. In this work, narrowband absorption across the visible range is discussed and image sensors with Full
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6a5c2e6f7e56f222f14b3aa59d6f617
https://doi.org/10.1016/j.orgel.2019.105397
https://doi.org/10.1016/j.orgel.2019.105397
Publikováno v:
IEEE Journal of Quantum Electronics. 46:871-876
A self-consistent numerical model has been developed for simulating lasing properties of a typical thin-disk laser in detail. The temperature-dependent form of the Boltzmann occupation factors, absorption and stimulated-emission cross sections, and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::902c873ac7a96b40f1ec844aa860ac70
https://doi.org/10.1109/jqe.2010.2040368
https://doi.org/10.1109/jqe.2010.2040368
Publikováno v:
Optics & Laser Technology. 41:800-803
In this paper, the dependence of the absorbed power on the temperature in an end-pumped CW quasi-three-level Yb:YAG thin disk laser is calculated. Here, we have used the temperature-dependent form of the Boltzmann occupation factors, absorption cross
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af20668a97725373b1aae2cf7e5cb37c
https://doi.org/10.1016/j.optlastec.2008.12.004
https://doi.org/10.1016/j.optlastec.2008.12.004
Autor:
Ahmad Khayat Jafari, Fatemeh Rahimi
Publikováno v:
SPIE Proceedings.
In this paper, effective magnetic of an arrangement of periodically close-packed conducting square rings have been studied theoretically. A non-resonant model has been introduced in order to determine the magnetic permeability of the structure from t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4123dd64f612432880d4d409f7919b19
https://doi.org/10.1117/12.2061792
https://doi.org/10.1117/12.2061792
Publikováno v:
Applied optics. 49(36)
We employ a Monte Carlo ray-tracing code along with the ANSYS package to predict the optical and structural behavior in end-pumped CW Yb:YAG disk lasers. The presence of inhomogeneous temperature, stress, and strain distributions is responsible for m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57c31a115ae46d82d76b2cf0937c2524
https://pubmed.ncbi.nlm.nih.gov/21173825
https://pubmed.ncbi.nlm.nih.gov/21173825
Publikováno v:
2008 9th International Conference on Laser and Fiber-Optical Networks Modeling.
In this paper, the dependence of absorption power on the temperature in an end pumped Yb:YAG quasi-three level thin disk laser is calculated. Here, we have used the temperature-dependent form of Boltzmann occupation factors, absorption cross section
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2812262999da98584ee4b7a225cb71a7
https://doi.org/10.1109/lfnm.2008.4670381
https://doi.org/10.1109/lfnm.2008.4670381
Autor:
Ahmad Khayat Jafari, Mehdi Aas
Publikováno v:
2008 9th International Conference on Laser and Fiber-Optical Networks Modeling.
A new model has been developed to describe behaviour of disk lasers. We have derived analytic expressions from a set of coupled rate equations which include the effects of the pump and the laser states simultaneously in order to investigate the influ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9685e235e6d57e0643b5c266e2541299
https://doi.org/10.1109/lfnm.2008.4670363
https://doi.org/10.1109/lfnm.2008.4670363
Publikováno v:
Journal of Physics D: Applied Physics. 42:135104
In order to get efficient transport of pump power through an active medium, we have used an optical cavity for pumping a solid-state thin-disc laser. Through this method, it is possible to recycle a pump system and combine a homogenizer and a pump sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbb4f43a7ecbda86df243041560594e4
https://doi.org/10.1088/0022-3727/42/13/135104
https://doi.org/10.1088/0022-3727/42/13/135104
Autor:
Ahmad Khayat Jafari, Mehdi Aas
Publikováno v:
Applied Optics. 48:106
The fundamental principles of the operation of a thin-disk laser are presented. We derived equations from a set of coupled rate equations that predict that the characteristics of a laser are affected by the Boltzmann occupation factors of the pump an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57dcee8051081d4283ac37e72d5cb9eb
https://doi.org/10.1364/ao.48.000106
https://doi.org/10.1364/ao.48.000106