Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Ahmad Kamkar"'
Publikováno v:
Results in Physics, Vol 13, Iss , Pp - (2019)
Probe field amplification without population inversion in a one-dimensional photonic crystal (1DPC) doped by four-level rare-earth ions is proposed. By controlling the intensity of the coupling field, probe field absorption with population inversion
Externí odkaz:
https://doaj.org/article/790b5ddfd18d4d61ad2b77dba68a20ac
Autor:
Seyed Hasan Nabavi, Vahid Vatani, Amin Babazadeh, Jalil Jafari Dashkasan, Ahmad Kamkar, Ebrahim Aghayari, Mohammad Karimi
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Coherent beam combining (CBC) is one of the methods for power scaling of high power lasers [1]. In the scientific literatures a low power narrow linewidth source is used for CBC, however in this report, a low cost diode laser source (spectral bandwid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::452575b30435e53afe35e7003d729279
https://doi.org/10.1109/cleoe-eqec.2019.8872407
https://doi.org/10.1109/cleoe-eqec.2019.8872407
Autor:
Ahmad Kamkarpour, Firouzeh Nili
Publikováno v:
Medical Journal of The Islamic Republic of Iran, Vol 19, Iss 1, Pp 87-89 (2005)
A long pedunculated egg-shaped lipoma of the sacrum in a newborn infant, presenting as a tail, was treated surgically. Occult spinal dysraphism may be accompanied with this entity. Investigations for underlying dysraphism and its treatment are mandat
Externí odkaz:
https://doaj.org/article/f8e544c0007c4c6ab02fb9b6ea25395e