Personal Information

Lyubomir Ivanov Stoyanov, Ph.D,

Experimental researcher

Department of Quantum electronics, Faculty of Physics, Sofia University

Address: 5 James Bourchier Blvd., 1164 Sofia, Bulgaria

Phone: ( +3592) 8161 798

 

 

 

 

LIST OF PUBLICATIONS

 

А. PUBLICATIONS WITH PEER REVIEW PROCESS

 

1.                  M. Zhekova, G. Maleshkov, L. Stoyanov, I. Stefanov, G. G. Paulus and A. Dreischuh, “Formation of multi-spot focal arrays by square-shaped optical vortex lattices,” Optics Communications, (2019). https://doi.org/10.1016/j.optcom.2019.05.051

2.                  S. Topuzoski, Lj. Janicijevic, L. Stoyanov, A. Dreischuh, “Fraunhofer diffraction of a Gaussian beam by a four-sector binary grating with a half period fringes shift between adjacent sectors” Optical and Quantum Electronics vol. 51: 71  (2019). https://doi.org/10.1007/s11082-019-1783-2

3.                  L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, G. G. Paulus and A. Dreischuh “Controllable beam reshaping by mixing square-shaped and hexagonal optical vortex lattices,” Scientific Reports 9, Article # 2128 (2019). https://doi.org/10.1038/s41598-019-38608-5

4.                  S. Topuzoski, Lj. Janicijevic, L. Stoyanov, I. Stefanov, A. Dreischuh, “Five-vortex spot patterns generated by diffraction of azimuthally X-shaped beam from a fork-shaped grating” Optics Communications, 428, pp. 206-215 (2018). https://doi.org/10.1016/j.optcom.2018.07.059

5.                  L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, G. G. Paulus and A. Dreischuh “Far-field pattern formation by manipulating the topological charges of hexagonal optical vortex lattices,” Journal of  Optics 20, 095601 (2018). https://doi.org/10.1088/2040-8986/aad30e

6.                  L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, D. N. Neshev, G. G. Paulus and A. Dreischuh “Far-field pattern formation by manipulating the topological charges of square-shaped optical vortex lattices,” J. Opt. Soc. Am B 35, 402-409 (2018). https://doi.org/10.1364/JOSAB.35.000402

7.                  N. Dimitrov, L. Stoyanov, I. Stefanov, I. P. Christov, A. Dreischuh, “Generation of high harmonics of coherent radiation in the extreme ultraviolet spectral range in the low-intensity regimeBulg. J. of Physics, vol. 44, pp. 99-108 (2017). http://www.bjp-bg.com/papers/bjp2017_2_099-108.pdf

8.                  L. Stoyanov, N. Dimitrov, I. Stefanov, D. N. Neshev, and A. Dreischuh, "Optical waveguiding by necklace and azimuthon beams in nonlinear media," J. Opt. Soc. Am. B 34, 801-807 (2017). https://doi.org/10.1364/JOSAB.34.000801

9.                  Lj. Janicijevic, S. Topuzoski, L. Stoyanov, A. Dreischuh, “Diffraction of a Gaussian beam by a four-sector binary grating with a shift between adjacent sectors,” Optics Communications, vol. 389, pp. 203-211 (2017). https://doi.org/10.1016/j.optcom.2016.12.041

10.              N. Dimitrov, L. Stoyanov, I. Stefanov, A. Dreischuh, P. Hansinger, and G. G. Paulus, „Pulse front tilt measurement of femtosecond laser pulses” Optics Communications, vol. 371, pp. 51-58 (2016). https://doi.org/10.1016/j.optcom.2016.03.054

11.              N. Dimitrov, L. Stoyanov, I. Stefanov, A. Dreischuh, P. Hansinger, and G. G. Paulus, “Measuring the relation between pulse front tilt angle and beam size for ultrashort pulses”, Bulg. J. Phys., vol. 43, pp. 21-29 (2016). http://www.bjp-bg.com/papers/bjp2016_1_021-029.pdf

12.               L. Stoyanov, S. Topuzoski, I. Stefanov, L. Janicijevic, A. Dreischuh, „Far field diffraction of an optical vortex beam by a fork-shaped grating,” Optics Communications, vol. 350, pp. 301-308 (2015).  https://doi.org/10.1016/j.optcom.2015.04.020

13.              L. Stoyanov, G. Maleshkov, I. Stefanov, and A. Dreischuh, „Initiating self-focusing of beams carrying spatial phase singularities,” J. Opt. Soc. Am. B, vol. 31, pp. 1159-1164 (2014). https://doi.org/10.1364/JOSAB.31.001159

           

B. PUBLICATIONS IN PROCEEDINGS OF SPIE

1.                  L. Stoyanov, N. Gorunski, M. Zhekova, I. Stefanov, A. Dreischuh, “Vortex interactions revisited: Formation of stable elementary cells for creation of rigid vortex lattices” Proc. SPIE 11047, 20th International Conference and School on Quantum Electronics: Laser Physics and Applications, 110471D (29 January 2019); https://doi.org/10.1117/12.2516531

2.                  N. Dimitrov, P. Lazarova, L. Stoyanov; I. Stefanov, A. Dreischuh, “Dispersion control in a folded 4-f system for shaping femtosecond laser pulses”. Proc. SPIE 10226, 19th International Conference and School on Quantum Electronics: Laser Physics and Applications, 102261D (2017). https://doi.org/10.1117/12.2264705

3.                  N. Dimitrov, L. Stoyanov, I. Stefanov, A. Dreischuh, P. Hansinger, and G. G. Paulus, „Evaluation of pulse front tilt measurement of femtosecond laser pulses,” Proc. of SPIE vol. 9447, Art. # 94471E (2015). https://doi.org/10.1117/12.2180268

4.                  G. Maleshkov, L. Stojanov, I. Stefanov, A. Dreischuh, „Controllable bright beam self-focusing initiated by singular dark beams,” Proc. of SPIE vol. 8770, Art. # 87701H (2013). https://doi.org/10.1117/12.2012434

 

C. CONFERENCE CONTRIBUTIONS

1.                  L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, G. G. Paulus, and A. Dreischuh “Far-field beam manipulating by mixing square-shaped and hexagonal optical vortex lattices” 20th International Conference and School on Quantum Electronics: Laser Physics and Applications, Sept. 17-21, 2018, Nessebar, Bulgaria, (Poster PE13).

2.                  L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, G. G. Paulus, and A. Dreischuh,  “Far-field pattern formation by manipulating the topological charges of hexagonal optical vortex lattices” 20th International Conference and School on Quantum Electronics: Laser Physics and Applications, Sept. 17-21, 2018, Nessebar, Bulgaria (Poster PE16).

3.                  M. Zhekova, L. Stoyanov, G. Maleshkov, I. Stefanov, G. G. Paulus, and A. Dreischuh,  “Bessel-like beam formation by annihilating the topological charges of optical vortices” 20th International Conference and School on Quantum Electronics: Laser Physics and Applications, Sept. 17-21, 2018, Nessebar, Bulgaria (Poster PE15).

4.                  L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, G. G. Paulus, and A. Dreischuh,  “Far-field beam reshaping of square and hexagonal optical vortex lattices by a second identical lattice” 10th Jubilee Conference of the Balkan Physical Union, Aug. 26-30, 2018, Sofia, Bulgaria (Poster P07-5).

5.                  L. Stoyanov, N. Gorunski, I. Stefanov, and A. Dreischuh, “Formation of stable elementary cells of rigid optical vortex lattices” 10th Jubilee Conference of the Balkan Physical Union, Aug. 26-30, 2018, Sofia, Bulgaria (Poster P07-4).

6.                  A. Dreischuh, L. Stoyanov, G. Maleshkov, M. Zhekova, I. Stefanov, S. Topuzoski, Lj. Janicijevic, P. Hansinger, G. G. Paulus, “Manipulating the topological charges of optical beams,” 10th Jubilee Conference of the Balkan Physical Union, Aug. 26-30, 2018, Sofia, Bulgaria (Oral Presentation).

7.                  M. Zhekova, L. Stoyanov, I. Stefanov, and A. Dreischuh, “Bessel-like beam generation by manipulation of the topological charges of optical vortices” Humboldt Kolleg - Humboldtians and scientific progress in the Central and East European countries, November 16–18, 2017, Sofia, Bulgaria (Oral Presentation).

8.                  L. Stoyanov, G. Maleshkov, I. Stefanov, A. Dreischuh, “Manipulation of the topological charges of vortices within large optical vortex lattices: Far-field beam reshaping,” VI International School and Conference on Photonics PHOTONICA 2017, 28 August - 1 September 2017, Belgrade, Serbia (Poster O.P.2).

9.                  L. Stoyanov, I. Stefanov, N. Dimitrov, and A. Dreischuh “Arithmetics with topological charges of optical vortices nested in large vortex lattices,” IIIrd National congress on physical sciences Sept. 29 - Oct 02, 2016, Sofia, Bulgaria. (Poster P08).

10.              N. Dimitrov, P. Lazarova, L. Stoyanov, I. Stefanov, and A. Dreischuh “Dispersion control of femtosecond laser pulses in-and outside the laser cavity” IIIrd National congress on physical sciences Sept. 29 - Oct 02, 2016, Sofia, Bulgaria.

11.              L. Stoyanov, I. Stefanov, and A. Dreischuh “Diffraction of a square-shaped optical vortex lattice by a second vortex lattice,” XIX-th International School and Conference on Quantum Electronics "Laser Physics and Applications” (ISCQE 2016), Sept. 26-30, 2016, Sozopol, Bulgaria. (Poster PE1).

12.              N. Dimitrov, P. Lazarova, L. Stoyanov, I. Stefanov, and A. Dreischuh “Dispersion control in a folded 4-f system for shaping femtosecond laser pulses” XIX-th Internat. Conference and School on Quantum Electronics: Lasers and Applications, Sept. 26 – 30, 2016, Sozopol, Bulgaria.

13.              S. Topuzoski, Lj. Janicijevic, L. Stoyanov, I. Stefanov and A. Dreischuh
“Five-vortex spots patterns generated from azimuthally X-shaped beam”
Winter College on Extreme Non-linear Optics, Attosecond Science and High-field Physics", ICTP, Trieste, Italy (05-16.02.2016).

14.              S. Topuzoski, L. Janicijevic, D. Cojoc, L. Stoyanov, I. Stefanov, and A. Dreischuh “Optical vortex beams generated with diffractive optical elements” Internat. Workshop Advances in Nanophysics and Nanophotonics, Magurele-Bucharest (Romania), 31 August-2 September, 2015 (invited talk).

15.              L. Stoyanov, I. Stefanov, N. Dimitrov, and A. Dreischuh “Vortex necklace beams: Self-focusing and guiding properties in SBN crystal,” PHOTONICA 2015 – Vth International School and Conference on Photonics, August 24-28, 2015, Belgrade, Serbia. (Poster P.NO.20).

16.              L. Stoyanov, S. Topuzoski, G. Maleshkov, I. Stefanov, L. Janicijevic, A. Dreischuh, „Far-field diffraction of singular dark beams by computer-generated holograms with encoded optical vorticesXVIII-th Internat. School on Quantum Electronics:Lasers and Applications (ISQE 2014), Sept. 29 - Oct 03, 2014, Sozopol, Bulgaria. (Poster PE17).

17.              L. Stoyanov, S. Topuzoski, I. Stefanov, L. Janicijevic, A. Dreischuh, „Fraunhofer diffraction of an optical vortex beam by fork-shaped grating23rd annual international Laser Physics Workshop (LPHYS’14), July 14-18 2014, Sofia, Bulgaria. (Poster P1.8).

18.              L. Stoyanov, G. Maleshkov, I. Stefanov, A. Dreischuh, “Controllable self-focusing of bright laser beam with spatial phase singularities41-st National conference on Physics education  combined with IInd  national congress on physical science  25-29 November 2013, Sofia, Bulgaria. (Oral Presentation).

19.              L. Stoyanov, G. Maleshkov, I. Stefanov, A. Dreischuh, „Self-focusing of beams carrying spatial phase singularities,” Control of Quantum Dynamics of Atoms, Molecules and Ensembles by Light (CAMEL 9), June 16-21, 2013 Nesebar, Bulgaria (Oral Presentation).

20.              G. Maleshkov, L. Stojanov, I. Stefanov, A. Dreischuh, „Bright beam self-focusing initiated by singular dark beams,” XVII-th Internat. School on Quantum Electronics: Laser and Applications (ISQE 2012), Sept. 24-28 2012, Nesebar, Bulgaria. (Poster PE13).