Assistant Professor

Keshav Dani
kmdani ('at'

I joined OIST as an Asst. Professor in Nov. 2011 after completing a Director’s Postdoctoral Fellowship at the Center for Integrated Nanotechnologies at Los Alamos National Laboratory. I graduated from UC Berkeley in 2006 with a PhD in Physics under the supervision of Prof. Daniel Chemla. I obtained a BS from Caltech in Mathematics with a senior thesis in Quantum Information Theory under John Preskill and Hideo Mabuchi. My recent research interests have been in ultrafast metamaterial devices, femtosecond dynamics in graphene and in developing pump-probe techniques from visible to THz.

Keshav Dani


Postdoctoral Researchers

Eleftheria Kavousanaki
eleftheria.kavousanaki ('at'

I joined OIST and the Femtosecond Spectroscopy Unit in May 2012 with the challenging role to provide theoretical support to the group, given that I am a theorist with expertise mainly on the nonlinear optical properties of semiconductors. Previously I did a postdoc at the University of Konstanz in Germany, in the group of Guido Burkard, where I worked on problems related to the optical manipulation of solid state qubits. Before that, I was a postdoc in the group of Shaul Mukamel at University of California, Irvine, where I gained experience on the powerful tool of two-dimensional spectrocopy. I completed my Ph.D. at the University of Crete in Greece (where I'm originally from), in which I studied the ultrafast nonlinear optical response of the quantum Hall system under the guidance of Ilias Perakis. My research interests include linear and nonlinear optical properties of semiconductor nanostructures, ultrafast spin dynamics, electron-phonon and electron-nuclear spin interactions, and excitonic qubits, among others.


Michael Man (‘at’

I received both my master and PhD degrees from the Hong Kong University of Science and Technology (HKUST). My main research interest is in the growth and characterization of nanostructures/ultrafilm films using a powerful and versatile technique called low energy electron microscopy and photoemission electron microscopy (LEEM/PEEM). LEEM/PEEM is capable of performing time and spatially resolved structural, electronic and chemical state measurements at spatial resolution down to the nanometer range. With this instrument, for example, we can study the correlation between morphology and band structure in inhomogeneous nanostructures such as in few layer graphene; we can also examine the surface magnetic state and image the dynamics in magnetic domain structure in variety of magnetic nanomaterials. I joined Prof. Dani’s group in OIST in December 2012. Together, we seek to combine my experience in LEEM/PEEM microscopy with the group’s expertise in ultrafast spectroscopy techniques. One of our goals is in the investigation and visualization of the ultrafast dynamics in nanostructures.

Michael Man

Bala Murali Krishna Mariserla
bala.mariserla ('at'

I am from southern part of India. I joined the Femtosecond spectroscopy unit on 13th may 2013. I have nonlinear optics background and my interests include time domain spectroscopy of optical pump-probe and THz. Before joining the group, I worked at Laser lab, University of Hyderabad for my Ph. D program. I received my masters in physics from Andhra University, Visakhapatnam.
At University of Hyderabad, my thesis involved nonlinear optical characterization of Graphene based hybrid materials, biosynthesized silver nanoparticles and organic molecules using nano, pico and femtosecond laser systems for optical limiting application. Good at degenerate four wave mixing, auto-correlation, Z-Scan and pump-probe techniques.

Julien Madeo

I did my PhD in Laboratoire Pierre Aigrain at Ecole Normale Supérieure in Paris. My work involved, on one hand, the investigation of electronic and optical properties of terahertz sources, Quantum Cascade Lasers (QCL), using THz Time-Domain Spectroscopy (THz TDS). On the other hand, I studied nonlinear optical properties of QCL to perform efficient 3-wave mixing in order to convert a THz radiation onto an NIR optical carrier. In 2012, I did a short postdoctoral visit in Dani Unit to build a broadband THz TDS setup (> 10 THz). Then, I worked 2 years as a postdoctoral researcher in Laboratoire Matériaux et Phénomènes Quantiques at Université Paris 7, where I investigated the properties of novel semiconductor based heterostructures for THz generation and plasmonics. I am very excited to be back at OIST for a longer period. My projects at OIST (in collaboration with MPQ-Paris 7, the University of Leeds and the University of Montpellier) deal with the realization of new THz quantum devices, the control of the losses and near field interaction and investigation of the laser gain using THz-TDS in arrays of microresonators.


PhD Students

E Laine Wong
elaine.wong ('at'

I joined Dani Unit for my PhD study in Jan 2014 after completing my brief rotations in various fields of optical microscopy, gene transformation, terahertz time-domain spectroscopy and cold atoms. I graduated from National University of Singapore with a bachelor degree in Engineering and went on to work as a research assistant in the optoelectronics lab in the university. My PhD study will focus on nonlinear optical properties of condensed matter. I look forward to employ the various experimental tools such as pump-probe and high harmonic generation to acquire better understanding of the femtosecond dynamics in matter.

Athanasios Margiolakis
athanasios ('at'

I completed my BSc (Physics), MSc (Photonics and Microelectronics) at the University of Crete and I worked as a technical student at CERN (LHC - Beam Position Monitoring system). I am currently enrolled in the postgraduate program at the University of Crete under Prof. G. Tsironis and I have been working as a special research student at OIST in Femtosecond Spectroscopy Unit since October 2013. My work is placed both in the Microscopy and High energy Labs and it covers femtosecond spectroscopy techniques and fabrication processes. I am honored to be here and I am motivated by my colleagues and the work environment.


Research Interns

Skylar Deckoff-Jones
[January 2015 - ]

The summer of 2014 I had the great opportunity to work with the Dani unit for a short two months as a NanoJapan: IREU intern. I left wanting more, so I have returned for a longer stay as an OIST intern. I am an undergraduate physics major from Tulane University, originally from Santa Fe, New Mexico. I have worked in Dr. Diyar Talbayev's laboratory for the past two years. Previously, I have designed and constructed Terahertz systems as well as worked with mechanically exfoliated 2D materials. This time I will be constructing a THz TDS that will be compatible with the units 17T magnet as well as taking pump-probe measurements on a number of fascinating 2D samples.

Dibyashree Koushik
[January 2015 - ]

I am a final year student of 5-year Integrated M.Tech in Nanotechnology at Central University of Jharkhand, India. I did my Masters project on “Nonlinear optical properties of graphene based nanocomposites” from Raman Research Institute, Bangalore. I joined the Dani Unit at OIST in January 2015 as a research intern for three months. Previously, I have undergone various internship projects at IIT Delhi, NPL Delhi and IIT Madras and worked on diverse topics like water purification using graphene-silver nanocomposite, low temperature synthesis of rare earth hexaboride nanoparticles and solar cells. I got introduced to ATK-VNL simulation tool simulation at ABV-IIITM Gwalior where I worked on nanowires. Upholding my inclination towards light matter interaction at the nanoscale, I joined the Femtosecond Spectroscopy Unit led by Prof. Keshav Dani to work on quantum cascade lasers along with expanding my exposure of working in the clean room and gaining knowledge and hands on experience on device fabrication. I hope to do my best for the betterment of the group and a fruitful career ahead for myself.


Current OIST Rotation Students


Previous Group Members

Previous Rotation Students 


Page last updated on January 30th 2015 (EK).