Dr. Julius Vengelis

       Dr. Julius Vengelis

       Phone: +370 623 47 017

       Email: 

       Nonlinear optics, Laser physics, Fiber optics, Laser pulse characterization techniques.

       Associate professor / Senior Researcher

       Nonlinear optics: optical parametric generators and amplifiers, continuum generation
       in bulk media and optical fibers;
       Laser physics: laser amplification, fiber chirped pulse amplification (FCPA), Pockels
       cells.
       Fiber optics: characterization photonic crystal fiber nonlinear and dispersive properties;
       Laser pulse characterization techniques: FROG, XFROG, correlation techniques.

       https://www.linkedin.com/in/dr-julius-vengelis-332355100/

       https://www.researchgate.net/profile/Julius-Vengelis-2

       https://orcid.org/0000-0001-8387-1212

       https://scholar.google.com/citations?user=g85SHu0AAAAJ&hl=lt

• June 2023 ‒ May 2026. Research project leader (principal investigator): Lithuanian Research Council funded research project: “Development of high repetition on rate tunable wavelength UV-VIS femtosecond laser system”. Grant number S-MIP-23-32.
  
  
• May 2024 ‒ April 2025. Research project leader (principal investigator): Vilnius University funded technology development research project “Method for crystal periodic poling quality evaluation using nonlinear phenomena in the crystal”.
  
  
• September 2020 ‒ September 2023. Research project leader (principal investigator): EU funded (via Lithuanian Research Council) research project: “Development and investigation of novel optical parametric generators: towards subnanosecond pulses”. Grant number 01.2.2-LMT-K-718-03-0004.

• J. Pimpė, V. Jarutis, J. Vengelis, Continuum generation in photonic crystal fibers: pumping with continuously tunable frequency femtosecond pulses, Invited talk in 45th National Lithuanian Physics conference, October 25 – 27, 2023, Vilnius, Lithuania. 
  
  
• J. Vengelis, Estimation of photonic crystal fiber dispersion by means of supercontinuum generation. Invited lecture in “Europhotonics spring school 2019”, April 2 – 5, Marseille, France 2019.

• Lasers (undergraduate course); 
• Modern optics (graduate course).

       Have been a supervisor of over 10 bachelor and masters student theses preparation.

Participation in the national/international governing bodies, commissions, committees, boards etc.

• Member of “Laser physics and optical technologies” and “Laser technology” master’s study program committee.
• Member of Lithuanian Academy of Sciences Young Academy. Vice chairperson for 2025 and 2026.

• SPIE Vilnius University student chapter scientific advisor.
• Member of program committee of international student conference “Open Readings” since 2019.
• Laserlab-Europe access programme expert referee.
• Lithuanian Research Council expert evaluator.
• Member of several thesis defence committees at Vilnius University Faculty of Physics.
• Member of several doctoral dissertation committees
• Member of several evaluator committees for various Optica society awards, etc.

• Elected as Vice Chairperson of Lithuanian Academy of Sciences Young Academy for 2025 and 2026 (November 2024).
• Elected to Lithuanian Academy of Sciences Young Academy (December 2023).
• Lithuanian Academy of Sciences Young researcher scholarship award 2022-2023
• Lindau Alumni: participated in Lindau Nobel Laureate meeting (Lindau, Germany) as a young scientist in 2021 and 2024.
• Lithuanian Academy of Sciences Young researcher and PhD student research contest honors for research work “Investigation of supercontinuum generation in optical fibers with specific dispersive features” 2021.
• SPIE student travel grant to attend “SPIE Optics + Photonics 2017” conference.
• European Cluster of Advanced Laser Light Sources (EUCALL) young researcher travel scholarship.

• Educational tours and lectures to pupils and teachers about lasers and VU Laser Research center.
• Educational lectures in "Student for one day" events.