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Akademický článek

Tunable superluminal propagation at spectral hole-burning regions in magneto-optical atomic medium

Autor: Aizaz Khan, Xiaoying Gu, Lei Gao, Lianping Hou, Jehan Akbar, Dongliang Gao

Publikováno v: Results in Physics, Vol 58, Iss , Pp 107507- (2024)

In the context of spectral hole-burning, normal dispersion with subluminal propagation is usually observed in the spectral hole-burning depth region. However, anomalous dispersion can occur in the continuous absorption peak region, which leads to sup

Externí odkaz: https://doaj.org/article/446128fa5ae143d2a6bd3a23f5d7d81b

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Akademický článek

AlGaInAs/InP Based Five & Three Quantum Wells Mode Locked Laser Diodes: A Comparative Study

Autor: Jehan Akbar, Muhammad Hanif, Muhammad Azhar Naeem, Kamran Abid

Publikováno v: Elektronika ir Elektrotechnika, Vol 26, Iss 5, Pp 22-27 (2020)

Comparison of performance of semiconductor mode-locked laser diodes fabricated using AlGaInAs/InP material containing 5 and 3 quantum wells (QWs) inside the active region is reported. The simulations and experimental results show that lasers containi

Externí odkaz: https://doaj.org/article/b8c7a6d5c34242e09f974ec35e3ab18e

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Akademický článek

HERLYN-WERNER-WUNDERLICH SYNDROME-ROLE OF IMAGING IN TIMELY AND CORRECT DIAGNOSIS

Autor: Hidayat Ullah, Atiq Ur Rehman Slehria, Rashid Mahmood, Jehan Akbar

Publikováno v: Pakistan Armed Forces Medical Journal, Vol 71, Iss 1, Pp 364-366 (2021)

We present this case of uterus didelphys with right sided haematometrocolpos due to obstructed hemivagina and ipsilateral renal agenesis-Herlyn Werner Wunderlich syndrome. The condition was missed on ultrasound and diagnosed on plain CT scan abdome

Externí odkaz: https://doaj.org/article/9b45ef9e53374ebf9d7c92a01d94aad8

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Akademický článek

Spin-Dependent First-Principles Study on Optoelectronic Properties of Neodymium Zirconates Pyrochlores Nd2Zr2O7 in Fd-3m and Pmma Phases

Autor: Azhar Qayyum, Sikander Azam, Ali H. Reshak, Jehan Akbar, Zeesham Abbas, Haseen Ullah, Muhammad M. Ramli

Publikováno v: Molecules, Vol 27, Iss 17, p 5711 (2022)

Rare-earth zirconate pyrochlores (RE2Zr2O7) are of much fundamental and technological interest as optoelectronic, scintillator and thermal barrier coating materials. For the first time, we report the detailed optoelectronic properties of rare-earth z

Externí odkaz: https://doaj.org/article/6d41a647bf96448b97b540ea5ace56e1

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Akademický článek

Growth of nonpolar a-plane AlGaN epilayer on Al-composition graded-AlGaN buffer layer and characterization of its surface morphology and crystalline quality

Autor: Abbas Nasir, Bin Xu, Irshad Ali, Jehan akbar

Publikováno v: Materials Research Express, Vol 9, Iss 10, p 105004 (2022)

Metal-organic chemical vapor deposition was successfully used to grow un-doped nonpolar a- plane AlGaN on an r- plane sapphire substrate. High-resolution x-ray (HR-XRD), atomic force microscopy, Polarization Indirect Microscopic Imaging, and Hall eff

Externí odkaz: https://doaj.org/article/0e066a9dd04b41d3b128c04fccdb63fe

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