Welcome to Laser Laboratory

The Laser Laboratory belongs to  the division of Electronics and Computing of the Physics

An overview of the fs upconversion and TPEF experiments (2)

Department  at the University of Patras, Greece. It is located on the second floor of building A of the Physics Department. It was established in 1974.

Its history can be divided in two periods. In the first period (1974-1997) the main research area was gas lasers while in the second period (1998-todate) the research is focused on ultrafast spectroscopy, nonlinear optics, photonic materials and fiber optics. The laboratory provides to young students the ability to understand the physics of lasers and applications both theoretically and experimentally. Furthermore, high quality scientific research is realized through its modern equipment.

News

30/8/2023

We congralulate Chrysa and Giannis for successfully presenting their Master theses and for finishing their Master studies. They will move to France and the Netherlands to obtain Ph.D. diploma. We wish them good luck.

30/8/2023

We welcome five new undergraduate students in the lab: Konstantina Kyriakidi, Aleksandra Manoli, George Soultse Elio, Lefteris Laleas and Agelos Markopoulos.

28/8/2023

Chrysa Vourdaki will present her Master Thesis entitled “Star-shaped chromophores, photophysics from femtoseconds to nanoseconds” on the 30/8/2023 at 13.00 in classroom F5 of the Department of Physics.

9/6/2023

Ioannis Georgoulis will present his Master Thesis entitled “Photophysics and non-linear optical properties of quadrupolar molecules with benzothiadiazole core” tomorrow 21/6/2023 at 13.00 in classroom F5 of the Department of Physics.

9/6/2023

Our recent work in Journal of Materials Chemistry C “Centripetal triazine chromophores: Towards efficient two-photon absorbers and highly emissive polyimide films” has been accepted as a back cover.

9/6/2023

Our work entitled “Aggregation-Induced Enhanced Emission of a Dimethylacridan Substituted Pyrimidine Derivative” by J. Massue, L. Diarra, I. Georgoulis, A. Fihey, F. Robin-le Guen, G. Ulrich, M. Fakis, S. Achelle has been accepted for publication in ChemPhotoChem.

11/5/2023

Our work entitled “Centripetal triazine chromophores: Towards efficient two-photon absorbers and highly emissive polyimide films” by P. Šimon, M. Klikar, Z. Burešová, C. Vourdaki, A. Katsidas, J. Tydlitát, J. Kulhánek, J. Zelenka, M. Fakis, and F. Bureš has been accepted for publication in J. Mater. Chem. C.

1/4/2023

Our work entitled “”Ultrafast Photophysics of Regioisomeric Triphenylamine Dyes having Dipolar D-π-A-A and Octupolar D-(π-A-A)3 Character with a Benzothiazole Unit in Matched or Mismatched Orientation” by V. Petropoulos, I. Georgoulis, C. Vourdaki, P. Hrobárik, I. Sigmundová, J. Nociarová, M. Maiuri, G. Cerullo and M. Fakis has been accepted for publication in ChemPhysChem.

15/2/2023

Our proposal “CUSBO – Ultrafast Photophysics of Multichromophoric Systems for Photonic Applications (PID: 24378)” for laboratory access to the Center for Ultrafast Science and Biomedical Optics (CUSBO), Polytechnico Di Milano has been accepted for funding under the LaserLab Europe framework.
https://lnkd.in/dE5ftRXA
https://lnkd.in/daVnYGTT

28/11/2022

Our work entitled “Graphene nano-sieves by femtosecond laser irradiation” by S. Katsiaounis, N. Chourdakis, Ε. Michail, M. Fakis, I. Polyzos, J. Parthenios and K. Papagelis has been accepted for publication in Nanotechnology.

19/9/2022

Our work entitled “Exploring Solvent and Substituent Effects on the Excited State Dynamics and Symmetry Breaking of Quadrupolar Triarylamine End-Capped Benzothiazole Chromophores by Femtosecond Spectroscopy” by M. Fakis, V. Petropoulos, P. Hrobárik, J. Nociarová, P. Osuský, M. Maiuri and G. Cerullo has been accepted for publication in Journal of Physical Chemistry B.

22/5/2022

Mihalis will make a two-weeks scientific visit to the group of Prof. Giulio Cerullo in Polytechnico di Milano starting at 12/6/2022.

14/3/2022

Our work entitled “Triphenylamine-based fluorophores bearing peripheral diazine regioisomers. Synthesis, characterization, photophysics and two-photon absorption” M. Klikar, D. Georgiou, I. Polyzos, M. Fakis, Z. Růžičková, O. Pytela and F. Bureš has been accepted for publication in Dyes and Pigments.

13/2/2022

Mihalis will give an invited lecture in the online meeting “Aromatic Heterocycles: A wonderful pool of Organic Materials” (AHeRoC) (https://bures.upce.cz/aheroc1.html) at 16-17 March 2022. Lecture tittle: “Photodynamics and 2-Photon Absorption Properties of Push-Pull Molecules with Heterocycle Substituents by Means of fs Laser Spectroscopy“.

13/2/2022

Our work entitled Commercially available chromophores as low-cost efficient electron injection layers for organic light emitting diodesby A. Verykios, A. Soultati, K. Tourlouki, C. Katsogridakis, C. Chochos, D. Alexandropoulos, V. Vidali, P. Stylianos, K. Yanakopoulou, D. Dimotikali, M. Fakis, L. C. Palilis, N. Stathopoulos, G. Pistolis, P. Skandamis, P. Argitis, M. Vasilopoulou has been accepted for publication in J. Phys. D, Appl. Phys.

11/9/2021

We welcome three new students in the lab. Anastasia Pantazi, Lambos Sdralias and Alexandros Katsidas will carry out their undregraduate thesis.

17/7/2021

Congratulations to Dimitris who successfully defended his master thesis and completed his M.Sc. studies.

13/7/2021

Dimitris will present his Master thesis entitled “fs-ns spectroscopy and non-linear absorption of organic chromophores of type D-π-A” on Thursday 15/7/2021 at 11.00 am using Zoom.

7/7/2021

Our work entitled “Oxidative C-H Homocoupling of Push-Pull Benzothiazoles: An Atom-Economical Route To Highly Emissive Quadrupolar Arylamine-Functionalized 2,2′-Bibenzothiazoles with Enhanced Two-Photon Absorption” by P. Osusky, J. Nociarova, M. Smolicek, R. Gyepes, D. Georgiou, I. Polyzos, M. Fakis and P. Hrobarik has been accepted for publication in Organic Letters.

20/4/2021

M.F. is a guest Editor for the Special Issue entitled “Frontiers in Ultrafast Spectroscopy, Techniques Applied to Novel Materials” which will be published in the Journal Optics.

Website: https://www.mdpi.com/journal/optics/special_issues/ultrafast_spectroscopy_materials

Deadline for manuscript submissions: 31 October 2021.

The Special Issue and is now open to receive submissions of full research articles and comprehensive review papers for peer-review and possible publication.

This Special Issue aims to show recent advances in ultrafast spectroscopy focusing on novel materials and techniques. Contributions are welcome from leading scientists and researchers and should concern various fields of ultrafast spectroscopy such as:

Techniques: transient absorption, transient fluorescence, fs IR spectroscopy, 2DES, photon echo, OKE, FSRS, photoelectron spectroscopy, etc.

Materials: chromophores, donor-acceptor systems, polymers, multichromophores, biomolecules, self-assembly, supramolecular assemblies, perovskites, quantum dots, 2D materials, semiconductors, nanoparticles–nanorods, light-harvesting systems, etc.

15/4/2021

Our work entitled “Direct Iodination of Electron-Deficient Benzothiazoles: Rapid Access to Two-Photon Absorbing Fluorophores with Quadrupolar (D–A–D) Architecture and Tunable Heteroaromatic Core” by J. Nociarova, P. Osusky, E. Rakovsky, D. Georgiou, I. Polyzos, M. Fakis and P. Hrobarik has been accepted for publication in Organic Letters.

20/12/2020

Our work entitled “Controlling PbI2 Stoichiometry during Synthesis to Improve the Performance of Perovskite Photovoltaics” by K. Tsevas, J. A. Smith, V. Kumar, C. Rodenburg, M. Fakis, Abd. Rashid bin Mohd Yusoff, M. Vasilopoulou, D. G. Lidzey, M. K. Nazeeruddin and A. D. F. Dunbar has been accepted for publication in Chemistry of Materials.

20/10/2020

Our work entitled “Effect of protonation on the photophysical properties of 4-substituted and 4,7-disubstituted quinazoline push-pull chromophores” by R. Plaza-Pedroche, D. Georgiou, M. Fakis, A. Fihey, C. Katan, F. Robin-le Guen, S. Achelle and J. Rodríguez-López has been accepted for publication in Dyes and Pigments.

5/10/2020

Our work entitled “Photophysics of 9,9-dimethylacridan substituted phenylstyrylpyrimidines exhibiting long lived intramolecular charge transfer fluorescence and aggregation induced emission characteristics” by M. Fecková, I. K. Kalis, T. Roisnel, P. le Poul, O. Pytela, M. Klikar, F. Robin-le Guen, F. Bureš, M. Fakis and S Achelle has been accepted for publication in Chemistry A European Journal.

5/9/2020

We welcome  our two new underground students Chryssa Vourdaki and Ioannis Georgoulis. Good luck in their undergraduate thesis.

16/7/2020

Congratulations to our M.Sc. student Ioannis Kalis who succesfully defended his M.Sc. thesis “Photophysical study of organic chromophores my means of electronic optical spectroscopy using pulsed lasers”.

3/6/2020

Our work entitled “Excitation/detection energy controlled anisotropy dynamics in asymmetrically cyano substituted tri-podal molecules” by K. Seintis, I. Kalis, M. Klikar, F. Bures, M. Fakis has been accepted for publication in Physical Chemistry Chemical Physics.

28/3/2020

Our work entitled “Branching effect on the linear and nonlinear optical properties of styrylpyrimidines” by F. Kournoutas, A. Fihey, J.-P. Malval, A. Spangenberg, M. Fecková, P. le Poul, C. Katan, F. Robin-le Guen, F. Bureš, S. Achelle, M. Fakis has been accepted for publication in Physical Chemistry Chemical Physics.

1/2/2020

Our work entitled “The effect of protonation on the excited state dynamics of pyrimidine chromophores” by F. Kournoutas, I. K. Kalis, M. Fecková, S. Achelle, M. Fakis has been accepted for publication in the Journal of Photochemistry and Photobiology A: Chemistry.

24/11/2019

Mihalis is making a visit in the group of Prof. Lukas Schmidt-Mende, in University of Kostanz (https://www.schmidt-mende.uni-konstanz.de/) from 23-30 of November 2019 under a funding from an IKYDA programme.

1/11/2019

Congratulations to Vassilis who successefully defended his MSc thesis. He has now moved to the group of Professor Giulio Cerullo, at the Department of Physics, Polytechnico di Milano (https://www.fisi.polimi.it/en/people/cerullo) for his PhD thesis. We wish him good luck.

22/5/2019

Our work entitled “Cooperative Self-Assembly Enables Two-Dimensional H-type Aggregation of a Sterically Crowded Perylene-Bisimide Dimer” by N. Karakostas, V. S. Petrakis, F. Kournoutas, I. M. Mavridis, E. Martinou, E. Efthimiadou, M. Fakis, G. Pistolis, has been accepted for publication in Crystal Growth & Design.

11/2/2019

Our work entitled “Lithium Doping of ZnO for High Efficiency and Stability Fullerene and Non-fullerene Organic Solar Cells” by A. Soultati, A Fakharuddin, E. Polydorou, C. Drivas, A. Kaltzoglou, M. Irfan Haider, F. Kournoutas, M. Fakis, L. C. Palilis, S. Kennou, D. Davazoglou, P. Falaras, P. Argitis, S. Gardelis, A. Kordatos, A. Chroneos, L. Schmidt-Mende, M. Vasilopoulou, has been accepted for publication in ACS Appl. Energy Mater.

11/4/2019

Vassilis will make a three months visit to the group of Professor Giulio Cerullo, at the Department of Physics, Polytechnico di Milano (https://www.fisi.polimi.it/en/people/cerullo) starting at 24/4/2019, funded by  Erasmus Programme.

1/3/2019

Congatulations to our M.Sc. student Vassilis who will participate in the 69th Lindau Laureate Meeting 2019 which will take place from 30/6/2019 to 5/7/2019 in Lindau, Germany (https://www.lindau-nobel.org/).

15/11/2018

Fotis will make a two-weeks visit in the group of Prof. Lukas Schmidt-Mende, in University of Kostanz (https://www.schmidt-mende.uni-konstanz.de/) from 1-15 of December 2018 under a scholarship from an IKYDA programme.

3/11/2018 

Our work entitled “Photophysical and Protonation Time Resolved Studies of DonorAcceptor Branched Systems With Pyridine Acceptors” by F. Kournoutas, K. Seintis, N. Karakostas, J. Tydlitát, S. Achelle, G. Pistolis, F. Bureš, M. Fakis has been accepted for publication in J. Physical Chemistry A

16/8/2018 

Our work entitled “Solvent-Acidity-Driven Change in Photophysics and Significant Efficiency Improvement in Dye-Sensitized Solar Cells of a Benzothiazole-Derived Organic Sensitizer” by K. Seintis, Ç. Şahin, I. Sigmundová, E. Stathatos, P. Hrobárik, M. Fakis has been accepted for publication in J. Physical Chemistry C

26/6/2018 

Our work entitled “Triazine-Substituted Zinc Porphyrin as an Electron Transport Interfacial Material for Efficiency Enhancement and Degradation Retardation in Planar Perovskite Solar Cells” by N. Balis, A. Verykios, A. Soultati, V. Constantoudis,M. Papadakis, F. Kournoutas, C. Drivas,M. C. Skoulikidou, Spyros Gardelis, M. Fakis, S. Kennou, A. G. Kontos, A. G. Coutsolelos, P. Falaras, M. Vasilopoulou has been accepted for publication in ACS Applied Energy Materials

21/6/2018 

Congratulations to Fotis who succesfully defended his MSc thesis. We welcome him as a Ph.D. student in the lab.

11/6/2018

Our work entitled “Star‐shaped push‐pull molecules with varied number of peripheral acceptors: An insight into their optoelectronic features” recently accepted in ChemPhotoChem has been selected for the cover picture of the 6th issue, volume 2, 2018. (https://onlinelibrary.wiley.com/toc/23670932/2018/2/6)

27/4/2018

Our work entitled “Photophysics, Electronic Structure and Solar Cell Performance of a Donor-Acceptor Poly(N-dodecyl-2,7-carbazole-alt-benzothiadiazole)” by A. Koutsoubelitis, K. Seintis, D. Tsikritzis, J. Oriou, C. Brochon, E. Cloutet, G. Hadziioannou, M. Vasilopoulou, S. Kennou, M. Fakis and L. C. Palilis has been accepted for publication in Organic Electronics

19/3/2018

Our work entitled “Star‐shaped push‐pull molecules with varied number of peripheral acceptors: An insight into their optoelectronic features” by M Klikar, K. Seintis, I. Polyzos, O. Pytela, T. Mikysek, N. Almonasy, M. Fakis, F. Bures  has been accepted for publication in ChemPhotoChem

16/2/2018

Kostas Seintis will defend his Ph.D. thesis entitled “Spectroscopic studies of novel multichromophoric molecules by means of ultrafast laser pulses” on Friday 23/2/2018 at 12.00, room F5.

4/12/2017

Our work entitled “Energy Transfer and Charge Separation Dynamics in Photoexcited Pyrene-Bodipy Molecular Dyads” by M. Fakis, J. S. Beckwith, K. Seintis, E. Martinou, C. Nançoz, N. Karakostas, I. Petsalakis, G. Pistolis, E. Vauthey has been accepted for publication in Physical Chemistry Chemical Physics.

30/9/2017

We welcome two new members in our group. Ioannis Kalis and Chrysa Avramopoulou have joined us as undergraduate students working on their diploma theses.

30/6/2017

Congratulations to Ilias who succesfully defended his M.Sc. thesis on 28/6/2017.

10/6/2017

Our work entitled Low Work Function Lacunary Polyoxometalate Electron Transport Interlayers for inverted Polymer Solar Cells of Improved Efficiency and Stability by M. Tountas, Y. Topal, E. Polydorou, A. Soultati, A. Verykios, A. Kaltzoglou, T. A. Papadopoulos, F. Auras, K. Seintis, M. Fakis, L. C. Palilis, D. Tsikritzis, S. Kennou, M. Koutsoureli, G. Papaioannou, M. Ersöz, M. Kus, P. Falaras, D. Davazoglou, P. Argitis and M. Vasilopoulou has been accepted for publication in ACS Applied Materials and Interfaces

5/6/2017

Our work entitled “Femtosecond to nanosecond studies of octupolar molecules and their quadrupolar and dipolar analogues” by K. Seintis, D. Agathangelou, D. Cvejn, N. Almonasy, F. Bureš, V. Giannetas and M. Fakis has been accepted for publication in Physical Chemistry Chemical Physics

3/5/2017

Our work entitled “CuInS2/ZnS core shell quantum dots. Energy transfer and down shifting properties for solar cell applications” by S. Gardelis , M. Fakis, N. Droseros, D. Georgiadou, A. Travlos and A. G. Nassiopoulou will be presented as an oral presentation in E-MRS 2017 Spring Meeting, May 22-26, 2017 Strasbourg, France

1/3/2017

Our work entitled “Avoiding ambient air and light induced degradation in high-efficiency polymer solar cells by the use of hydrogen-doped zinc oxide as electron extraction material” by E. Polydoroua, I. Sakellis, A. Soultati, A. Kaltzoglou, T. A. Papadopoulos, J. Briscoe, D. Tsikritzis, M. Fakis, L. C. Palilis, S. Kennou, P. Argitis, P. Falaras, D. Davazoglou and M. Vasilopoulou has been accepted for publication in Nano Energy

14/2/2017

Our work entitled “The Dynamics of Intramolecular Energy Hopping in Multi-Bodipy Self – Assembled Metallocyclic Species: A Tool For Probing Subtle Structural Distortions in Solution” by E. Martinou, K. Seintis, N. Karakostas, A. Bletsou, N. Thomaidis, M. Fakis and G. Pistolis has been accepted for publication in Journal of Physical Chemistry C

16/11/2016

Our work entitled “Energy transfer in aggregated CuInS2/ZnS core-shell quantum dots deposited as solid films” by S. Gardelis, M. Fakis, N. Droseros, D. Georgiadou, A. Travlos, A. Nassiopoulou has been accepted for publication in Journal of Physics D: Applied Physics

25/10/2016

Congratulations to Fotis who finished his undergraduate studies and is now a M.Sc. student in the lab

1/09/2016

Our group has two new members. Marios Meimaris and Vasilios Petropoulos have joined the group for performing their undergraduate thesis. We welcome them!

28/06/2016

Our work entitled “Femtosecond to Nanosecond Dynamics of Dipolar and Octupolar Light Harvesting Molecules Based on Benzothiazole e Acceptors” by Kostas Seintis, Dafni Chroni, Veronika Hrobarikova, Ivica Sigmundova, Peter Hrobarik and Mihalis Fakis will be presented in the 12th European Conference on Atoms Molecules and Photons (ECAMP12) in Frankfurt, Germany, September 5-9, 2016

1/06/2016

Our works entitled “Modulation of the photophysical and photovoltaic properties of new organic sensitizers by changing the electron donating group” by K. Seintis, D. Sygkridou, I. Sigmundová, P. Hrobárik, E. Stathatos, V. Giannetas, M. Fakis and “Excitation energy transfer in semiconducting polymers used in organic solar applications” by K. Seintis, L. .L. Nikiforakis, L. C. Palilis, M. Fakis will be presented in the 13th International Conference on Nanosciences & Nanotechnologies (NN16) 5-8 July 2016, Thessaloniki, Greece

20/05/2016

Mihalis Fakis is visiting the University of Geneva, Eric Vauthey’s group, on June 2016 to perform ultrafast spectroscopy studies in novel multichromophoric systems.

19/01/2016

Our work entitled “A Highly–Ordered Rigid Multichromophoric 3D Supramolecular Network by Combining Ionic and Coordination – Driven Self – Assembly” by A. Kaloudi-Chantzea, E. Martinou, K. Seintis, N. Karakostas, P. Giastas, F. Pitterl, H. Oberacher, M. Fakis and G. Pistolis has been accepted for publication in Chemical Communications

18/01/2016

Our work entitled “Solvent and branching effect on the two-photon absorption properties of push-pull triphenylamine derivatives” by D. Cvejn, E. Michail, K. Seintis, M. Klikar, O. Pytela, T. Mikysek, N. Almonasy, M. Ludwig, V. Giannetas, M. Fakis and F. Bureš has been accepted for publication in RSC Advances

06/01/2016

Our work entitled “Water-Soluble Lacunary Polyoxometalates with Excellent Electron Mobilities and Hole Blocking Capabilities for High Efficiency Fluorescence and Phosphorescent Organic Light Emitting Diodes” by M. Tountas, Y. Topal, M. Kus, M. Ersöz, M. Fakis and M. Vasilopoulou has been accepted for publication in Advanced Functional Materials