Laboratory of Laser Spectroscopy

26.11.2021

#institute

Sven Lange

Institute of Physics

Head of Laboratory, Associate Professor in Optics and Spectroscopy

W.Ostwaldi 1-D304

sven.lange@ut.ee

+372 737 4718

Laurits Puust

Institute of Physics

Laboratory of Laser Spectroscopy

Programme Director for Materials Science and Technology master , Engineer 0.4 p

W.Ostwaldi 1-D301

laurits.puust@ut.ee

The activity of Laboratory of Laser Spectroscopy is focused on the investigation of novel materials by using modern using modern possibilities of optical laser spectroscopy.

Core competence of the laboratory:

Laser Spectroscopy
Time resolved optical spectroscopy
Optical spectroscopy at cryogenic temperatures (down to 1.9 K)
Optical microspectroscopy (Raman and fluorescence)
Single molecul spectroscopy
Correlation spectroscopy
Laser beam shaping
Plasma-based synthesis of nanomaterials
Optical properties of doped and lowdimensional anorganic materials
Computer modelling of optical materials

Image		Sven Lange Head of Laboratory, Associate Professor in Optics and Spectroscopy E-mail: sven.lange@ut.ee Phone: +372 737 4718 Office: D304 CV, projects: ETIS Publications: Google Scholar, Scopus Supervision: UT DSpace
Image		Yury Orlovskiy Associate Professor in Laser Spectroscopy E-mail: yury.orlovskiy@ut.ee Phone: +372 737 4666 Office: D306 CV, projects: ETIS Publications: ETIS Supervision: UT DSpace
Image		Jaak Kikas Professor emeritus E-mail: jaak.kikas@ut.ee Phone: +372 737 4608 Office: C305 CV, projects: ETIS Publications: ETIS Presentations: UTTV Teaching: TÜ ÕIS Supervision: UT DSpace
		Tanel Tätte Associate Professor in material science E-mail: tanel.tatte@ut.ee Phone: +372 737 4718 Office: D304 CV, projects: ETIS Publications: ETIS Supervision: UT DSpace

Image		Leonid Dolgov Associate Professor in Spectroscopy and Sensorics E-mail: leonid.dolgov@ut.ee Phone: +372 737 4742, mobile: +372 58102396 Office: D307 CV, projects: ETIS Publications: ETIS Presentations: NANO-2019, NANO-2020, NANO-2022 Teaching: TÜ ÕIS Supervision: UT DSpace
Image		Viktor Peet Associate Professor E-mail: viktor.peet@ut.ee Phone: +372 737 4726 Office: D422 CV, projects: ETIS Publications: Google Scholar, Publons, ORCID Supervision: UT DSpace
Image		Ilmo Sildos Associate Professor in Optics and Spectroscopy of Nanomaterials E-mail: ilmo.sildos@ut.ee Phone: +372 737 4613 Office: D301 CV, projects: ETIS Publications: ETIS Teaching: TÜ ÕIS Supervision: UT DSpace
		Veera Krasnenko Research Fellow in Material Science E-mail: veera.krasnenko@ut.ee Phone: +372 737 4768 Office: D308 CV, projects: ETIS Publications: ETIS Teaching: TÜ ÕIS Supervision: UT DSpace

		Rein Koch Engineer E-mail: rein.koch@ut.ee Phone: +372 737 4796 Office: CV, projects: ETIS Publications: ETIS Teaching: TÜ ÕIS Supervision: UT DSpace
Image		Laurits Puust Engineer E-mail: laurits.puust@ut.ee Phone: +372 737 4613, mobile: 53599502 Office: D301 CV, projects: ETIS Publications: ETIS Teaching: TÜ ÕIS Supervision: UT DSpace
Image		Siim Hödemann Specialist E-mail: siim.hodemann@ut.ee Office: D303 CV, projects: ETIS Publications: ETIS Teaching: TÜ ÕIS Supervision: UT DSpace
Image		Aleksei Treštšalov Specialist E-mail: aleksei.trestsalov@ut.ee Phone: +372 737 4615 Office: D405 CV, projects: ETIS Publications: ETIS Supervision: UT DSpace

"Horisont 2020 programm" projekt "Mikrotubulaarsed tahkeoksiidsed kütuseelemendid viimaks mikromõõtmetes"
(2021−2023) MLTFY21132R G. Kelp
Personaalne uurimistoetus "Uued meetodid ja optilised elemendid laseri kiirtekimbu kujundamiseks" (2017-2020) PUT1504 V. Peet.
Personaalse uurimistoetuse rühmagrant "Haruldaste muldmetallide lisandioonide klastrite põimolekute spektroskoopia kvantarvutite jaoks" (2019-2023) PRG347 Y. Orlovskiy.

Y. Orlovskii, H. Gross, E. Vinogradova, V. Boltrushko, V. Hizhnyakov, "Spectroscopic evidence of cooperative (entangled) quantum states of Nd3+ ion pairs in Nd³⁺: LaF₃ crystal", Journal of Luminescence (2020)
S. Heinsalu, O. Fesenko, A. Treshchalov, S. Kovalchuk, A. Yaremkevych, V. Kavelin, L. Dolgov, "Silver nanoparticles with reduced graphene oxide for surface-enhanced vibrational spectroscopy of DNA constituents",Applied Nanoscience (2019)
Y. Orlovskii, A. Popov, E. Orlovskaya, A. Vanetsev, E. Vagapova, M. Rähn, V. Sammelselg, I. Sildos, A. Baranchikov, P. Grachev, V. Loschenov, A. Ryabova, "Comparison of concentration dependence of relative fluorescence quantum yield and brightness in first biological window of wavelengths for aqueous colloidal solutions of Nd³⁺: LaF₃ and Nd³⁺: KY₃F₁₀ nanocrystals synthesized by microwave-hydrothermal treatment", Journal of Alloys and Compounds (2018)
A. Treshchalov, H. Erikson, L. Puust, S. Tsarenko, R. Saar, A. Vanetsev, K. Tammeveski, I. Sildos, "Stabilizer-free silver nanoparticles as efficient catalysts for electrochemical reduction of oxygen", Journal of Colloid and Interface Science (2017)
A. Vanetsev, K. Kaldvee, L. Puust, K. Keevend, A. Nefedova, S. Fedorenko, A. Baranchikov, I. Sildos, M. Rähn, V. Sammelselg, Y. Orlovskii, "Relation of crystallinity and fluorescent properties of LaF₃:Nd³⁺ nanoparticles synthesized with different water based techniques", ChemistrySelect (2017)
A. Treshchalov, S. Tsarenko, T. Avarmaa, R. Saar, A. Lõhmus, A. Vanetsev, I. Sildos, "He/H₂ Pulsed-Discharge Plasma as a Tool for Synthesis of Surfactant-Free Colloidal Silver Nanoparticles in Water", Plasma Medicine (2016)
U. Rocha, J. Hu, E. Rodríguez, A. Vanetsev, M. Rähn, V. Sammelselg, Y. Orlovskii, J. Solé, D. Jaque, D. Ortgies, "Subtissue Imaging and Thermal Monitoring of Gold Nanorods through Joined Encapsulation with Nd-Doped Infrared-Emitting Nanoparticles", Small Willey SHV (2016)
I. Vlasov, A. Shiryaev, T. Rendler, S. Steinert, S. Lee, D. Antonov, M. Vöroös, F. Jelezko, A. Fisenko, L. Semjonova, J. Biskupek, U. Kaiser, O. Lebedev, I. Sildos, P. Hemmer, V. Konov, A. Gali, J. Wrachtrup", Molecular-sized fluorescent nanodiamonds",NATURE NANOTECHNOLOGY (2014)
O. Acik, L. Dolgov, M. Krunks, A. Mere, V. Mikli, S. Pikker, A. Loot, I. Sildos, "Surface plasmon resonance caused by gold nanoparticles formed on sprayed TiO₂ films",Thin Solid Films (2013)

Defended doctoral dissertations since 1990

Results of PRG347

As a result of joint work on the PRG347 project “Spectroscopy of entangled states of clusters of rare-earth impurity ions for quantum computing”, the Laboratories of Laser Spectroscopy and Solid State Theory of the Institute of Physics of the University of Tartu proposed a design and a way to create a new type of optical quantum computers - ultrafast quantum computers with qubits (quantum bits) of optical frequencies without using a magnetic field. The working element of such computers can be microcrystals synthesized on the basis of mixed optical fluoride crystal matrices doped with praseodymium, neodimium, erbium, and thulium ions. Such crystal matrices are commonly used as active elements for lasers. Methods for controlling quantum logic gates (CNOT) and some others using laser pulses are proposed, allowing quantum computing at high speed. Due to the ultra-fast working cycle, the developing quantum computers will make it possible to overcome the main difficulties arising in the creation of quantum computers associated with the short coherence time of qubits. The experimental work is in progress.