En
  • دکتری (1393)

    فیزیک - اتمی مولکولی

    دانشگاه صنعتی شریف، تهران، ایران

  • کارشناسی‌ارشد (1388)

    فیزیک اتمی مولکولی

    صنعتی شریف، تهران، ایران

  • تکنولوژی لیزر و توصیف کوانتومی برهمکنش لیزر با ماده
  • تولید هارمونیکهای مراتب بالا ، طیف سنجی و دینامیک مولکولی فوق سریع،
  • برهمکنش نور با نانومواد ، مطالعه محیط¬های بی نظم و لیزرهای کاتوره ای
  • آزمایشگاه لیزر و فتونیک

اينجانب الناز ايراني متولد 1363 طول دوره تحصيل دکتري خود را در دانشگاه صنعتی شریف با درجه عالي در مردادماه 1393 به پايان رسانيده ام. در طول دوره دکتري رتبه اول دکتری با معدل 19:48 را حائز شده ام. از مهرماه سال 1393 تا بهمن ماه 1395 نیز به عنوان پژوهشگر پسادکتري در دانشگاه شریف فعالیت پژوهشی نموده ام. از بهمن ماه 1395 عضو هیات علمی بخش فیزیک اتمی-مولکولی دانشکده علوم پایه دانشگاه تربیت مدرس هستم. مهمترین زمینه پژوهشی اینجانب توصیف کوانتومی برهمکنش لیزر با سیستمهای اتمی، مولکولی و نانومواد است. اینجانب عضو بنیاد نخبگان هستم و در چندین پروژه پژوهشی نیز مجری و همکاری داشته ام.

ارتباط

رزومه

Mode-controlled random laser assisted by stimulated Raman scattering

MS Hosseini, E Yazdani, E Irani, B Sajad, F Mehradnia, S Bazire, A Bayat
Journal Papers , , {Pages }

Abstract

Enhancement and Tuning of Optical Properties of CdTe/CdS Core/Shell Quantum Dots by Tuning Shell Thickness

E Irani, E Yazdani, A Bayat
Journal Papers , , {Pages }

Abstract

Influence of coherent vibronic excitation on the high harmonics generation of diatomic molecules

M Monfared, E Irani, C Lemell, J Burgdörfer
Journal Papers , , {Pages }

Abstract

Investigation of ablation efficiency during the pulsed laser ablation of a zinc metal target in a distilled water environment

MR Khodaverdi, E Irani
Journal Papers , , {Pages }

Abstract

مهرب رثا یسررب شنک گنهامه فیط رد یگتسبمه و یلدابت یاه یاه لااب بتارم‎

M Monfared, E Irani, R Sadighi, MK Moravvej-Farshi
Journal Papers , , {Pages }

Abstract

Hybrid adsorption–photocatalysis properties of quaternary magneto-plasmonic ZnO/MWCNTs nanocomposite for applying synergistic photocatalytic removal and membrane filtration in?…

Elnaz Irani, Mitra Amoli-Diva
Journal PapersJournal of Photochemistry and Photobiology A: Chemistry , 2020 January 10, {Pages 112359 }

Abstract

A new multifunctional filtration membrane was prepared by twofold advantages of conventional polymeric-membrane as the supporting layer and magneto-plasmonic Ag-doped ZnO@Fe3O4/MWCNTs nanocomposite as the functional layer. Poly acrylic acid (PAA)-modified polyamide (PA) discs (PAA-PA) were applied to increase the hydrophilicity of prepared membrane and X-Ray diffraction (XRD) and scanning electron microscopy (SEM) techniques were used for characterization. The grafting yield of PAA in the pores and on the surface of PA was 17 wt.% and weigh difference between PAA-PA membrane before and after modifying with the photocatalyst was 8.7 mg. The amount of photocatalyst loading in the prepared membrane was obtained 6.49 g m-2. The synergisti

Studying the effect of exchange and correlation effects on high-order harmonics

M Monfared, E Irani, R Sadighi, MK Moravvej-Farshi
Journal Papers , , {Pages }

Abstract

Hybrid adsorption–photocatalysis properties of quaternary magneto-plasmonic ZnO/MWCNTs nanocomposite for applying synergistic photocatalytic removal and membrane filtration in …

E Irani, M Amoli-Diva
Journal Papers , , {Pages }

Abstract

Efficient high harmonic generation of bromine molecule by controlling the carrier-envelope phase and polarization of driving laser pulse

E Irani, M Monfared
Journal PapersChemical Physics Letters , Volume 719 , 2019 March 16, {Pages 27-33 }

Abstract

The generation of ultrashort attosecond pulse requires both an enhanced high harmonic generation and the spectral-phase control. In the present work, an efficient method is theoretically investigated for extending HHG cutoff energy in Br2 molecule using TDDFT. The effects of molecular orientation and carrier-envelope phase of the laser on the high harmonic spectrum are analyzed. As a result, by the fine modulations of the laser field, the harmonic plateau is enlarged and the position of structure-induced interference minimum shifts. We also provide a physical picture on the intensity dependence of the spectral minima in the harmonic spectra.

Enhancing high harmonic generation by the global optimization of a two-color chirped laser field

Mohammad Mofared, Elnaz Irani, Rasoul Sadighi-Bonabi
Journal PapersPhysical Chemistry Chemical Physics , Volume 21 , Issue 18, 2019 January , {Pages 9302-9309 }

Abstract

Enhanced high harmonics are generated by local and global optimization approaches to achieve a supercontinuum spectrum. Based on time-dependent density functional theory calculations, the optimum convolution of a two-color chirped pulse from an N2O molecule implements a significant enhancement of cutoff frequency and high harmonic yield. The optimization is done by controlling the effective chirp parameters and the carrier-envelope phase of the designed laser field. Indeed, all of the effective parameters are adjusted simultaneously for the global optimization; whereas, just two variables are tuned to obtain the desired cutoff frequency based on the local optimization. The results show that the global optimization approach extends the cutof

Photocatalytic filtration reactors equipped with bi-plasmonic nanocomposite/poly acrylic acid-modified polyamide membranes for industrial wastewater treatment

Mitra Amoli-Diva, Elnaz Irani, Kamyar Pourghazi
Journal PapersSeparation and Purification Technology , 2019 October 24, {Pages 116257 }

Abstract

In this study, two new composite membranes with antifouling and anti-biofouling properties were prepared through the modification of commercial polyamide (PA) discs using combination of in-situ polymerization of polyacrylic acid (PAA) and grafting of two synthesized bi-plasmonic Au-Ag and Ag-Au photocatalysts. The synthesis and characterization of the photocatalysts in batch mode were discussed in details as primary studies. Two intense 405-nm and 532-nm lasers for Ag-Au and Au-Ag photocatalysts, respectively and a solar-simulated xenon lamp for both photocatalysts were applied for photodegradation studies and the results were compared. In addition, the effect of other parameters such as type and amount of photocatalysts, and initial concen

Attosecond pulse generation from the interaction of Bromine molecule with bicircularly-polarized laser pulses

E Irani
Journal PapersIranian Journal of Physics Research , Volume 19 , Issue 3, 2019 December 10, {Pages 637-644 }

Abstract

In this paper, high-order harmonic generation by a bicircular field, which consists of two coplanar counterrotating circularly polarized fields of frequency ω and 3ω, is investigated for bromine (Br 2) molecule. This field possesses dynamical symmetry, which can be adapted to the symmetry of the highest occupied molecular orbital (HOMO) and used to investigate the molecular symmetry. An accurate three dimensional (3D) calculation of molecular dynamics through time dependent density-functional theory (TDDFT) is considered to explore broad harmonic plateau with high efficiency. We show that an attosecond pulse with a pulse duration of 349as from the superposition of several optimum harmonics is generated.Furthermore, in order to study of th

Dynamic modelling and simulation of laser ablation of titanium, silicon and tungesten elements by pulsed Nd: YAG laser in a distilled water

M Pashazadeh, E Irani, MM Golzan, R Sadighi-Bonabi
Journal Papers , Volume 40 , Issue 89300913, 2019 January 1, {Pages 08-Jan }

Abstract

Pulsed laser ablation in liquid solution is a fast, safe and clean method for producing colloidal nanoparticles with different structural and optical characteristics. However, the other synthesis methods require high temperatures, long reaction times and multi-step chemical synthetic procedures. In this paper, the simulation of nanosecond pulsed laser ablation process and effective parameters on the Titanium, Silicon, and Tungsten elements in distilled water environment at the height of 1 cm from the surface of the metal is investigated. For this purpose, the pulsed Nd: YAG laser with nanosecond time duration, wavelengths of 1064nm and 532nm, a focal diameter of 200 μm is used. The simulation is based on considering the effects of the wate

The control of electron quantum trajectories on the high-order harmonic generation of CO and N2 molecules in the presence of a low frequency field

and E. Irani A. M. Koushki, R. Sadighi-Bonabi, M. Mohsen-Nia
Journal PapersThe Journal of Chemical Physics , Volume 148 , 2018 January , {Pages }

Abstract

In the present work, an efficient method is theoretically investigated for extending high-order harmonics and ultrashort attosecond pulse generation in N2 and CO molecules by using the time-dependent density functional theory approach. Our results show that by utilizing chirped laser field in the presence of a low frequency field, not only is the harmonic cutoff extended remarkably but also the single short quantum trajectory is selected to contribute to the harmonic spectra. When a low frequency field is added to the two-color chirped laser field, the long quantum trajectories are suppressed and only the short quantum trajectories contribute to the higher harmonic emission mechanism. As a result, the spectral modulation is significantly de

High-order harmonic generation of CO and N2 molecules under linearly-and bi circularly-polarized laser pulses by TD-DFT

AM Koushki, R Sadighi-Bonabi, M Mohsen-Nia, E Irani
Journal PapersLaser Physics , Volume 28 , Issue 7, 2018 May 31, {Pages 075404 }

Abstract

We present a method for high-order harmonics generation of N 2 and CO molecules under two-color circularly polarized counter-rotating laser pulses at frequencies of and 2. Pulse envelope in this investigation is sin-squared and the intensity of each laser beam is with ten-optical cycle (oc). We show that an isolated pulse with a pulse duration shorter than 20 attosecond from the superposition of several harmonics can be generated. Both two-color linearly-and bicircularly-polarized laser pulses are considered. Our results have also been compared with the outcomes of the previous theoretical works as well as experiment observations. It is found that for CO molecule, the bicircularly-polarized laser pulses are superior and more efficient, and

Controlling the properties of TiO2 nanoparticles generated by nanosecond laser ablation in liquid solution

Mahsa Pashazadeh, Elnaz Irani, Mir Maqsood Golzan, Rasoul Sadighi-Bonabi
Journal PapersLaser Physics , Volume 28 , Issue 8, 2018 June 7, {Pages 085601 }

Abstract

Laser ablation of titanium target in distilled water for synthesis of colloidal nanoparticles is studied both experimentally and theoretically. The effects of laser parameters such as wavelength, pulse energy, fluence and shot numbers on the ablation rate and size properties of colloidal nanoparticles are investigated. The experimental approach addresses the interesting issue for finding the optimal main experimental parameters of laser ablation. The theoretical thermal model of nanosecond pulsed laser ablation is developed to visualize the evolution of temperature distributions and ablation depth. The simulation result of ablation depth has been compared with the experimental result obtained by Nd: YAG laser, 1064 nm wavelength, 10 ns time

Controlling the multi-electron dynamics in the high harmonic spectrum from N2O molecule using TDDFT

M Monfared, E Irani, R Sadighi-Bonabi
Journal PapersThe Journal of chemical physics , Volume 148 , Issue 23, 2018 June 21, {Pages 234303 }

Abstract

In this study, high harmonic generation from a multi-atomic nitrous oxide molecule was investigated. A comprehensive three-dimensional calculation of the molecular dynamics and electron trajectories through an accurate time-dependent density functional theory was conducted to efficiently explore a broad harmonic plateau. The effects of multi-electron and inner orbitals on the harmonic spectrum and generated coherent attosecond pulses were analyzed. The role of the valence electrons in controlling the process and extending the harmonic plateau was investigated. The main issue of producing a super-continuum harmonic spectrum via a frequency shift was considered. The time-frequency representation by means of a wavelet transform of the induced

Multielectron dissociative ionization of methane and formaldehyde molecules with optimally tailored intense femtosecond laser pulses

E Irani, A Anvari, R Sadighi-Bonabi, M Monfared
Journal PapersSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , Volume 185 , 2017 October 5, {Pages 298-303 }

Abstract

The multielectron dissociative ionization of CH4 and CH2O molecules has been investigated using optimum convolution of different dual tailored short laser pulses. Based on three dimensional molecular dynamics simulations and TDDFT approach, the dissociation probability is enhanced by designing the dual chirped-chirped laser pulses and chirped-ordinary laser pulses for formaldehyde molecule. However, it is interesting to notice that the sensitivity of enhanced dissociation probability into different tailored laser pulses is not significant for methane molecule. In this presented modifications, time variation of bond length, velocity, time dependent electron localization function and evolution of the efficient occupation states are presented

Selective photo-dissociative ionization of methane molecule with TDDFT study

E Irani, A Anvari, R Sadighi-Bonabi
Journal PapersSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , Volume 171 , 2017 January 15, {Pages 325-329 }

Abstract

Three dimensional calculation of control dynamics for finding the optimized laser filed is formulated using an iterative method and time-dependent density functional approach. An appropriate laser pulse is designed to control the desired products in the dissociation of methane molecule. The tailored laser pulse profile, eigenstate distributions and evolution of the efficient occupation numbers are predicted and exact energy levels of this five-atomic molecule is obtained. Dissociation rates of up to 78%, 80%, 90%, and 82% for CH 2+, CH+, C+ and C++ are achieved. Based on the present approach one can reduce the controlling costs.

The effect of chirped intense femtosecond laser pulses on the Argon cluster

H Ghaforyan, R Sadighi-Bonabi, E Irani
Journal PapersAdvances in High Energy Physics , Volume 2016 , 2016 January , {Pages }

Abstract

The interaction of intense femtosecond laser pulses with atomic Argon clusters has been investigated by using nanoplasma model. Based on the dynamic simulations, ionization process, heating, and expansion of a cluster after irradiation by femtosecond laser pulses at intensities up to 2 1017 Wcm−2 are studied. The analytical calculation provides ionization rate for different mechanisms and time evolution of the density of electrons for different pulse shapes. In this approach, the strong dependence of laser intensity, pulse duration, and laser shape on the electron energy, the electron density, and the cluster size is presented using the intense chirped laser pulses. Based on the presented theoretical modifications, the effect of chirpe

/pro/academic_staff/eirani/publication

دروس نیمسال جاری

  • كارشناسي ارشد
    الكتروديناميك پيشرفته 1 ( واحد)
    دانشکده علوم پایه، گروه فيزيك اتمي مولكولي

دروس نیمسال قبل

  • كارشناسي ارشد
    آزمايشگاه اپتيك و ليزر ( واحد)
    دانشکده علوم پایه، گروه فيزيك اتمي مولكولي
  • كارشناسي ارشد
    اپتيك پيشرفته 1 ( واحد)
  • 1400
    بوريايي, كسري
    بررسي ويژگي هاي اپتيكي خطي و غيرخطي چارچوب¬هاي آلي-فلزي بر پايه آهن
  • 1397
    صادقي فراز, امين
    بهينه¬سازي طيف هارمونيك مراتب بالا در مواد نيم¬رسانا با روش تابعي چگالي وابسته زماني
  • پژوهشگر پسادکتری در دانشگاه صنعتی شریف، 1393-1395
  • رئیس بخش فیزیک 1399
  • مدیرگروه فیزیک اتمی مولکولی 1399
  • عضو کمیته ایمنی دانشکده علوم پایه 1398
  • عضو شورای اموزش مجازی دانشکده علوم پایه 1399
  • کسب گرنت پروژه بین المللی همکاری ایران –اتریش 1397
  • کسب گرنت بین الملل حمایت از استادیاران برترجوان 1397
  • جایزه بهترین مقاله در کنفرانس لیزر و کاربردهای آن، دانشگاه تربیت مدرس تهران، 1393
  • دریافت تندیس رتبه اول دکتری در دانشگاه صنعتی شریف 1393
  • دریافت گرنت صندوق حمایت از پژوهشگران 1394 و1397،
  • کسب جایزه شهید چمران از بنیاد نخبگان 1394،
  • کسب جایزه شهید کاظمی آشتیانی از بنیاد نخبگان 1396

مهم

جدید

    اطلاعیه ای درج نشده است