Ivan Kašík, Ph.D.

Ivan Kašík
Position: 
Deputy team leader; Senior research scientist
Team: 
Fiber lasers and non-linear optics
Phone: 
+420 266 773 558
+420 220 922 391, +420 266 773 559
E-mail: 
kasik@ufe.cz
Location: 
Dislocated laboratory, Praha 6 - Lysolaje

Research interests:

Materials for the preparation of optical fibers, methods of preparation and characterization.

Professional activities:

- Member of SPIE, the international society for optics and photonics

- Member of European Optical Society, Czechoslovak Society for Photonics.

- Member of Czech Glass Society

- Board of the Institute Secretary

- Lecturer of Advanced Study Course on Optical Sensing (ASCOS), separate lectures for PhD-students of Institute of Chemical Technology (Physics and chemistry of glass and ceramic materials), for MS-students of Faculty of Electro-engineering CTU (Photonics, Optoelectronics, Optical fibers) and for MS-students of Nuclear Science and Engineering CTU (Optoelectronics). 

2011 - today: Member of Council for Doctoral Studies at the Institute of Chemical Technology Prague

2003 - 2006 : Member of Scientific board of Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic.

1995 - today: Senior research fellow, Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic.

1993 - today: Institute of Photonics and Electronics of the Czech Academy of Sciences, Department of Technology of Optical Fibers, since 1996 scientific worker, since 2003 head of the department. Special optical fibres for fibre lasers and optical fiber sensors. Doped silica materials for optical fiber drawing, methods of their preparation (MCVD) and characterization.

Materials for students:

Student materials from lectures can be found here

Education:

1995: PhD, Institute of Chemical Technology, Prague, thesis ”Non-traditional Doping of High-silica Optical Fibers
1986: Ing. (MS degree equivalent), Institute of Chemical Technology, Prague, diploma ”Non-oxide Glasses of Ge-Se-Te Composition”

Current research projects:

Principal investigator of the projects:

Co-principal investigator of the projects:

Member of the projects:


 Selected past projects:

Principal investigator of the projects:

Co-principal investigator of the projects:

Member of projects:

Patents:

  • P. Peterka, I. Kašík, V. Matějec: “Zařízení a způsob pro navázání signálu a čerpání do dvouplášťového optického vlákna”, CZ Pat. 301215.
  • Pavel Peterka, Pavel Koska, Ondrej Podrazky, Vlastimil Matejec, Ivan Kasik, "Amplifying module, method of making the same, and cladding pumped optical device incorporating the module," CZ Pat. 305888, 9 March 2016.

Utility models:

O.Podrazký, J.Mrázek, I.Kašík, L.Šašek, R.Schilhart: “Optický pH metr s mikroskopickou sondou”, Utility model CZ 30867 U1, registered 31 July 2017.

Publications:

Book chapters:

  1. Kašík, O. Podrazký, J. Mrázek, J. Aubrecht, V. Matějec: „Chlorine in water“, R. Mangione, D. Carlyle (Eds.): „Chlorine: Properties, applications and health effects“, Nova Science Publishers, Inc., 2011, book chapter
  2. I. Kašík, V. Matějec, M Chomát: "Optical chemical sensors", Praha: PACI - Prazske analyticke centrum inovaci 2007, 169-185, skripta.
  3. I. Kasik, V. Matejec, M. Chomat, M. Hayer, D. Berkova: ”Optical fibres for optical sensing“, Chapt. 4 in Optical Chemical sensors, Dordrecht: Springer, 2006, 59-76
  4. V. Matějec, I. Kašík, M. Chomát : “Chapter 13: Fundamentals and performance of the MCVD aerosol process”, Aerosol chemical processes in the enviroment, Levis (2000)

Journal papers:

  1. P. Vařák, M. Leich,  M. Kamrádek, J. Aubrecht, O. Podrazký, I. Bartoň, B. Švejkarová, A. Michalcová, K. Wondraczek, M. Jäger, I. Kašík, P. Peterka, P. Honzátko, “Nanoparticle doping and molten-core methods towards highly thulium-doped silica fibers for 0.79 μm-pumped 2 μm fiber lasers – A fluorescence lifetime study”, Journal of Luminescence, Volume 275, November 2024, 120835, Link
  2. P. Golonko, I. Kašík, J. Mrázek, J. Żmojda. Influence of ZnF2 concentration on excitation energy transfer between Er3+ and Tm3+ ions in antimony-germanate glass ceramic. PHOTONICS LETTERS OF POLAND, VOL. 16 (1), 4-6 (2024). Link 
  3. P. Vařák, M. Kamrádek, J. Aubrecht, O. Podrazký, J. Mrázek, I. Bartoň, A. Michalcová, M. Franczyk, R. Buczyňski, I. Kašík, P. Petereka, P. Honzátko. Heat treatment and fiber drawing effect on the matrix structure and fluorescence lifetime of Er- and Tm-doped silica optical fibers. Vol. 14, No. 4 / 1 Apr 2024 / Optical Materials Express (2024). Link
  4. Maria Michalska, Pavel Honzatko, Pawel Grzes, Michal Kamradek, Ondrej Podrazky, Ivan Kasik, and Jacek Swiderski, Thulium-Doped 1940- and 2034-nm Fiber Amplifiers: Towards Highly Efficient, High-Power All-Fiber Laser Systems, Journal of Lightwave Technology, vol. 42, no. 1, pp. 339-346, Jan.1, 2024. Link
  5. Pavel Peterka, Jan Aubrecht, Dariusz Pysz, Marcin Franczyk, Ondřej Schreiber, Michal Kamrádek, Ivan Kasik, and Ryszard Buczyński, "Development of pedestal-free large mode area fibers withTm3+ doped silica nanostructured core," Opt. Express 31, 43004-43016 (2023) Link
  6. V. Matějec, I. Kašík and I. Bartoň. Fiber-Optic Nanosensors for Chemical Detection. Chemosensors 2023, 11(10), 521. Link 
  7. M. Franczyk, D. Pysz, R. Stepien, J. Cimek, R. Kasztelanic, F.L. Chen, M. Klimczak, L. Zhao, I. Kasik, P. Peterka, R. Buczynski. Dual band active nanostructured core fiber for two-color fiber laser operation. Journal of Lightwave Technology. 40 (2022) 7180–7190. Link
  8. P. Vařák, M. Kamrádek, J. Mrázek, O. Podrazký, J. Aubrecht, P. Peterka, P. Nekvindová, I. Kašík. Luminescence and laser properties of RE-doped silica optical fibers: The role of composition, fabrication processing, and inter-ionic energy transfers. Optical Materials: X, Vol. 15, 100177 (2022). Link
  9. P. Vařák, I. Kašík, P. Peterka, J. Aubrecht, J. Mrázek, M. Kamrádek, O. Podrazký, I. Bartoň, M. Franczyk, R. Buczynski, P. Honzátko. Heat treatment and fiber drawing effect on the luminescence properties of RE-doped optical fibers (RE = Yb, Tm, Ho). Optics Express Vol. 30, Issue 6, pp. 10050-10062 (2022). Link
  10. Mrázek, J., Bysakh, S., Skála, R., Mráček, A., Dhar, A., Bartoň, I., Kašík, I. Crystallization kinetics and structural properties of nanocrystalline europium-yttrium-titanate (Eu0.5Y0.5)2Ti2O7. Advanced Powder Technology 33, 103501 (2022). Link
  11. O. Podrazký, J. Mrázek, J. Proboštová, S. Vytykáčová, I. Kašík, Š. Pitrová, Ali A. Jasim “Ex-Vivo Measurement of the pH in Aqueous Humor Samples by a Tapered Fiber-Optic Sensor,” Sensors, 21, 5075, (2021). Link
  12. P. Vařák, J. Mrázek, A. A. Jasim, S. Bysakh, A. Dhar, M. Kamrádek, O. Podrazký, I. Kašík, I. Bartoň, P. Nekvindová „Thermal stability and photoluminescence properties of RE-doped (RE = Ho, Er, Tm) alumina nanoparticles in bulk and fiber-optic silica glass,“ Optical Materials, Vol. 118, 111239, (2021). Link
  13. M. Kamrádek, J. Aubrecht, P. Vařák, J. Cajzl, V. Kubeček, P. Honzátko, I. Kašík, P. Peterka “Energy transfer coefficients in thulium-doped silica fibers,” Optical Materials Express, Vol. 11, 1805, (2021). Link
  14. A. Theodosiou, J. Aubrecht, I. Kašík, D. Dousek, M. Komanec, K. Kalli “Femtosecond Laser Plane-by-Plane Inscribed Cavity Mirrors for Monolithic Fiber Lasers in Thulium-Doped Fiber,” Sensors, 21(6), 1928, (2021). Link
  15. F. Todorov, J. Aubrecht, P. Peterka, O. Schreiber, A. A. Jasim, J. Mrázek, O. Podrazký, M. Kamrádek, N. Kanagaraj, M. Grábner, Y. Baravets, J. Cajzl, P. Koška, A. Fišar, I. Kašík, P. Honzátko "Active Optical Fibers and Components for Fiber Lasers Emitting in the 2-μm Spectral Range", Materials, 13, 5177 (2020). Link.
  16. A. A. Jasim, O. Podrazký, P. Peterka, M. Kamrádek, I. Kašík, P. Honzátko “Impact of shaping optical fiber preforms based on grinding and a CO2 laser on the inner-cladding losses of shaped double-clad fibers”, Optics Express, Vol. 28, Issue 9, (2020). Link
  17. J. Aubrecht, P. Peterka, P. Honzátko, O. Moravec, M. Kamrádek, I. Kašík “Broadband thulium-doped fiber ASE source”, Optics Letters, Vol. 45, No. 8 (2020). Link.
  18. J.Cajzl, P.Peterka, M.Kowalczyk, J.Tarka, G.Sobon, J.Sotor, J.Aubrecht, P.Honzátko, I. Kašík, Thulium-doped silica fibers with enhanced fluorescence lifetime and their application in ultrafast fiber lasers, Fibers 2018, 6(3), 66; DOI:10.3390/fib6030066
  19. J. Mrazek, I. Kasik, L. Prochazkova, V. Cuba, V. Girman, V. Puchy, W. Blanc, J. Aubrecht, J. Cajzl, O. Podrazky, P. Peterka, YAG ceramic nanoparticles implementation into MCVD technology of active optical fibers, Applied Sciences. Appl. Sci. 2018, 8, 833; DOI:10.3390/app8050833
  20. J. Mrázek, S. Vytykáčová, J. Buršík, V. Puchý, V. Girman, P. Peterka, I. Kašík, „Sol-gel route to nanocrystalline Eu2Ti2O7 films with tailored structural and optical properties“, J Am Ceram Soc. 2019;102:6713–6723, DOI: 10.1111/jace.16524   
  21. O. Podrazký, P. Peterka, I.Kašík, S. Vytykáčová, J. Proboštová, J. Mrázek, M. Kuneš, V. Závalová, V. Radochová, O. Lyutakov, E. Ceci-Ginistrelli, D.Pugliese, N.G. Boetti, D. Janner, D. Milanese, „In-vivo testing of a bioresorbable phosphate-based optical fiber“, J. Biophotonics. 2019;e201800397, link   
  22. A. Theodosiou, J. Aubrecht, P. Peterka, I. Kasik, F. Todorov, O. Moravec, P. Honzatko, K. Kalli, "Er/Yb double-clad fibre laser with fs-laser inscribed plane-by-plane chirped FBG laser mirrors," IEEE Photonics Technology Letters, vol. 31, issue 5, pp. 409-412
  23. I. Kasik, M. Kamradek, J. Aubrecht, P. Peterka, O. Podrazky, J. Cajzl, J. Mrazek, P. Honzatko, Thulium-doped optical fibers for fiber lasers operating around 2 um, Bulletin of the Polish Academy of Sciences – Technical sciences, Vol. 67, No.5, 2019, DOI: 10.24425/bpasts.2019.
  24. I. Kasik, V.Matejec, M. Hayer, M. Kamradek, O. Podrazky, J. Mrazek, P. Peterka, P. Honzatko, Glass materials for optical fibers, Ceramics-Silikaty, 2020, DOI: 10.13168/cs.2019.0045
  25. Mrazek, J.; Aubrecht, J.; Todorov, F.; Bursik, J.; Puchy, V.; Dzunda, R.; Vytykacova, S.; Kasik, I., CO2 laser-assisted preparation of transparent Eu2Ti2O7 thin films. Ceram. Int. 2018, 44 (8), 9479-9483. link
  26. Jan Aubrecht, Pavel Peterka, Pavel Koška, Ondřej Podrazký, Filip Todorov, Pavel Honzátko, and Ivan Kašík, "Self-swept holmium fiber laser near 2100 nm," Opt. Express 25, 4120-4125 (2017)
  27. Mrazek, J.; Bohacek, J.; Vytykacova, S.; Bursik, J.; Puchy, V.; Robert, D.; Kasik, I., Photolithographic patterning of nanocrystalline europium-titanate Eu2Ti2O7 thin films on silicon substrates. Mater. Lett. 2017, 209, 216-219. link
  28. Vytykacova, S.; Mrazek, J.; Puchy, V.; Dzunda, R.; Skala, R.; Peterka, P.; Kasik, I., Sol-gel route to highly transparent (Ho0.05Y0.95)(2)Ti2O7 thin films for active optical components operating at 2 mu m. Opt. Mater. 2018, 78, 415-420. link
  29. I. Kašík, Vl. Matějec, M. Hayer, M. Kamrádek, O. Podrazký, J. Mrázek, P. Peterka, P. Honzátko „GLASS MATERIALS FOR OPTICAL FIBERS”, Ceramics-Silikáty 64 (1), 29-34 (2020). Link 
  30. K. Nithyanandan, A. Theodosiou, J. Aubrecht, P. Peterka, M. Kamrádek, K. Kalli, I. Kašík, P. Honzátko „All fiber mode-locked thulium-doped fiber laser using a novel femtosecond-laser-inscribed 45°-plane-by-plane-tilted fiber grating“, Laser Phys. Lett. 16, 095104 (2019). Link
  31. M. Kamrádek, I. Kašík, J. Aubrecht, J. Mrázek, O. Podrazký, J. Cajzl, P. Vařák, V. Kubeček, P. Peterka, P. Honzátko „Nanoparticle and solution doping for efficient holmium fiber lasers“, IEEE Photonics Journal (2019). Link
  32. Mrazek, J.; Aubrecht, J.; Todorov, F.; Bursik, J.; Puchy, V.; Dzunda, R.; Vytykacova, S.; Kasik, I., CO2 laser-assisted preparation of transparent Eu2Ti2O7 thin films. Ceram. Int. 2018, 44 (8), 9479-9483. link
  33. Mrazek, J.; Bohacek, J.; Vytykacova, S.; Bursik, J.; Puchy, V.; Robert, D.; Kasik, I., Photolithographic patterning of nanocrystalline europium-titanate Eu2Ti2O7 thin films on silicon substrates. Mater. Lett. 2017, 209, 216-219. link
  34. Vytykacova, S.; Mrazek, J.; Puchy, V.; Dzunda, R.; Skala, R.; Peterka, P.; Kasik, I., Sol-gel route to highly transparent (Ho0.05Y0.95)(2)Ti2O7 thin films for active optical components operating at 2 mu m. Opt. Mater. 2018, 78, 415-420. link
  35. Kašík, I., Peterka, P., Mrázek, J., Honzátko, P. Silica optical fibers doped with nanoparticles for fiber lasers and broadband sources. Current Nanoscience. 2016, 12 (3), 277-290.
  36. Peterka, P., Honzátko, P., Koška, P., Todorov, F., Aubrecht, J., Podrazký, O., Kašík, I. Reflectivity of transient Bragg reflection gratings in fiber laser with laser-wavelength self-sweeping: Erratum. Optics Express. 2016, 24 (14), 16222-16223.
  37. Koška, P., Peterka, P., Aubrecht, J., Podrazký, O., Todorov, F., Becker, M., Baravets, Y., Honzátko, P., Kašík, I. Enhanced pump absorption efficiency in coiled and twisted double-clad thulium-doped fibers. Optics Express. 2016, 24 (1), 102-107.
  38. Sotor, J., Pawliszewska, M., Sobon, G., Kaczmarek, P., Przewolka, A., Pasternak, I., Cajzl, J., Peterka, P., Honzátko, P., Kašík, I., Strupinski, W., Abramski, K. All-fiber Ho-doped mode-locked oscillator based on a graphene saturable absorber. Optics Letters. 2016, 41, 2592-259.
  39. Frank, M., Jelínek, M., Kubeček, V., Kašík, I., Podrazký, O., Matějec, V. Air and silica core Bragg fibers for radiation delivery in the wavelength range 0.6-1.5 um. Optical Fiber Technology. 2016, 31, 36-41.
  40. J. Mrázek, M. Surýnek, S. Bakardjieva, J. Buršík, J. Proboštová, I. Kašík: “Luminescence properties of nanocrystalline europium titanate Eu2Ti2O7“, Journal of Alloys and Compounds. 2015, 645, 57-63
  41. Mrázek, J., Potel, M., Buršík, J., Mráček, A., Kallistová, A., Jonášová, Š., Boháček, J., Kašík, I. Sol-gel synthesis and crystallization kinetics of dysprosium-titanate Dy2Ti2O7 for photonic applications. Materials Chemistry and Physics. 2015, 168, 159-167. 
  42. Q. Cui, O. Podrazký, J. Mrázek, J. Proboštová, I. Kašík: “Tapered-fiber optical sensor for physiological pH range“IEEE Sensors Journal, 15 (9), (2015) 4967-4973
  43. Mrázek, J., Surýnek, M., Bakardjieva, S., Buršík, J., Kašík, I. Synthesis and crystallization mechanism of europium-titanate Eu2Ti2O7. Journal of Crystal Growth. 2014, 391, 25-32. 
  44. J. Mrázek, I. Kašík, L. Procházková, V. Čuba, J. Aubrecht, J. Cajzl, O. Podrazký, P. Peterka, M. Nikl: „Active optical fibers doped with ceramic nanocrystals“, Advances in Electrical and Electronic Engineering 12 (2014) 567-574
  45. P. Peterka, P. Honzátko, P. Koška, F. Todorov, J. Aubrecht, O. Podrazký, I. Kašík: „Reflectivity of transient Bragg reflection gratings in fiber laser with laser-wavelength self-sweeping“, Optics Express 22 (2014), 30024-30031
  46. P. Honzátko, Y. Baravets, I. Kašík, O. Podrazký: „Wideband thulium-holmium-doped fiber source with combined forward and backward ASE at 1600-2300 nm spectral band“, Optics letters 39 (2014) 3650-3653
  47. I. Kašík, O. Podrazký, J. Mrázek, J. Cajzl, J. Aubrecht, J. Proboštová, P. Peterka, P. Honzátko, A. Dhar: „Erbium and Al2O3 nanocrystals -doped silica optical fibers“, Bulletin of the Polish Academy of Sciences, Technical Sciences 62, 2014, 641-646
  48. M. Szili, I. Kasik, V. Matejec, G. Nagy, B. Kovacs: „Poly(luminol) based sensor array for determination of dissolved chlorine in water“, Sensors and Actuators B-chemical 192 (2014) 92-98
  49. M. Písařík, P. Peterka, S. Zvánovec, Y. Baravets, F. Todorov, I. Kašík,  P. Honzátko: „Fused fiber components for „eye-safe“ spectral region around 2 micrometers“, Optical and Quantum Electronics 46 (2014) 603-611
  50. O. Podrazký, V. Matějec, J. Mrázek, T. Martan, J. Aubrecht, I. Kašík: „Tapered optical fiber sensor for detection of pH in microscopic volumes“, Sensors & Transducers 27 (2014) 312-318
  51. J. Lorinčík, I. Kašík, J. Vaniš, L. Sedláček, J. Dluhoš: „Imaging of dopant distribution in optical fibers with an orthogonal TOF SIMS“, Surface and Interface Analysis 46 (2014) 238-240
  52. T. Martan, J. Aubrecht, O. Podrazký, V. Matějec, I. Kašík: ”Detection of hydrocarbons using suspended core microstructured optical fiber”, Sensors and Actuators B-chemical 202 (2014) 123-128
  53. Kasik, I., Podrazky, O., Mrazek, J., Martan T., Matejec V., Hoyerova K., Kaminek M., Local fibre-optic detection of pH in Arabidopsis thaliana plants, Mat. Sci. Eng. C 33 (2013) 4809-4815
  54. P. Peterka, P. Honzátko, M. Becker, F. Todorov, M. Písařík, O. Podrazký, I. Kašík: “Monolithic Tm-doped fiber laser at 1951nm with deep-UV femtosecond-laser-induced FBG pair“, IEEE Photonics Technology Letters 25 (2013) 1623-1625
  55. Dhar, A., I. Kašík, O. Podrazký, V. Matějec: “Fabrication and properties of Er-doped nanocrystalline phase-seperated optical fibers”, Advances in Electrical and Electronic Engineering 11 (2013) 29-35
  56. Dhar, I. Kašík, B. Dussardier, O. Podrazký, V. Matějec: „Preparation and properties of Er–doped ZrO2 nanocrystalline phase-separated preforms of optical fibres by MCVD process“, Applied Ceramics Technology 9 (2012) 341-348

Conference papers:

  1. P. Peterka, I. Bartoň, P. Vařák, M. Franzcyk, J. Aubrecht, R. Kasztelanic, M. Kamrádek, D. Pysz, O. Podrazký, I. Kašík, and R. Buczynski, "Dual-wavelength fiber lasers based on active fibers with structured cores [Invited]," in Proc SPIE Photonics West, Fiber Lasers XXI: Technology and Systems, San Francisco, USA, 26 January - 1 February 2024, p. 1286512. https://doi.org/10.1117/12.3000800

  2. F. Todorov, M. Kamrádek, I. Kašík, “Rare-Earth-Doped Silica Optical Fibers and All-Fiber Lasers Operating in the 2-µm Spectral Range,” in 2023 23rd International Conference on Transparent Optical Networks (ICTON), Jul. 2023, p. Mo.D6.2, Bucharest, Romania, doi: 10.1109/ICTON59386.2023.10207512

  3. Mrázek, J.,  Vařák, P.,  Aubrecht, J.,  Vytykáčová, S., Baravets, Y., Kašík, I.  Nanocrystalline Ceramic Luminophores for Short- and Mid-Infrared. In: 2020 22nd International Conference on Transparent Optical Networks (ICTON). 2020, p. 1-4. 
  4. Mrázek, J., Kašík, I., Aubrecht, J.,  Podrazký, O.,  Cajzl, J., Peterka, P.  Nanocrystalline Ceramic Phosphors for High-Power Lasers Operating at 2μm.  In: 21st International Conference on Transparent Optical Networks (ICTON). 2019, p. 1-4.
  5. J. Mrázek, M. Nikl, I. Kašík, O. Podrazký, J. Aubrecht, A. Beitlerová: “Nanoparticle-doped radioluminescent silica optical fibers“, Optical Fibers and Their Applications (SPIE) 9228, 2014, p. 922805-1
  6. J. Mrázek, I. Kašík, J. Boháček, J. Proboštová, J. Aubrecht, O. Podrazký, J. Cajzl, P. Honzátko: „Special optical fibers doped with nanocrystalline holmium-yttrium titanates (HoxY1-x)2Ti2O7 for fiber-
  7. J. Aubrecht, P. Peterka, P. Koška, P. Honzátko, M. Jelínek, M. Kamrádek, M. Frank, V. Kubeček, I. Kašík: “ Spontaneous laser-line sweeping in Ho-doped fiber laser“, Fiber Lasers XIV: Technology and Systems (SPIE), 10083, 2017, 100831V
  8. M. Kamrádek, J. Aubrecht, P. Peterka, O. Podrazký, P. Honzátko, J. Cajzl, J. Mrázek, V. Kubeček and I. Kašík: "Spectral properties of thulium doped optical fibers for fiber lasers around 2 micrometers", Proc. SPIE 10232, Micro-structured and Specialty Optical Fibres V, 2017, 1023205
  9. P. Koška, P. Peterka, V. Doya, J. Aubrecht, I. Kasik, "Enhancement of pump absorption efficiency by bending and twisting of double clad rare earth doped fibers", Micro-structured and Specialty Optical Fibres V (Proc. SPIE), 102320E (June 9, 2017), invited oral presentation
  10. Frank, M., Jelínek, M., Kubeček, V., Podrazký, O., Kašík, I., Matějec, V. Delivery of 1.9um laser radiation using air-core Bragg fibers. In: Wave and Quantum Aspects of Contemporary Optics (SPIE). 2016, 10142, p. 101421D-101421D-9.
  11. Aubrecht, J., Peterka, P., Honzátko, P., Baravets, Y., Jelí¬nek, M., Kubeček, V., Pawliszewska, M., Sotor, J., Sobon, G., Abramski, K. M., Kašík, I. Characterization of holmium fibers with various concentrations for fiber laser applications around 2.1 um. In: Micro-Structured and Specialty Optical Fibres IV (SPIE). 2016, 9886, p. 988607-988607-7.
  12. Vytykáčová, S., Mrázek, J., Proboštová, J., Kašík, I. Optical properties of nanocrystalline (Ho0.05Y0.95)2Ti2O7 for optical amplifiers. In: Photonic Crystal Materials and Devices XII (SPIE). 2016, 9885, p. 98851F-98851F-7.
  13. Peterka, P., Honzátko, P., Koška, P., Podrazký, O., Kašík, I. Transient-fiber-Bragg grating spectra in self-swept Fabry-Perot fiber lasers. In: Fiber Lasers XII: Technology, Systems, and Applications (SPIE). 2015, 9344, p. 934423.
  14. Podrazký, O., Mrázek, J., Vytykáčová, S., Proboštová, J., Kašík, I. Fiber-optic pH sensing system with microscopic spatial resolution. In: Optical Sensors 2015 (SPIE). 2015, 9506, p. 950612.
  15. Aubrecht, J., Cajzl, J., Peterka, P., Honzátko, P., Podrazký, O., Todorov, F., Kašík, I. Characterisation of double-clad thulium-doped fibers with increased quantum conversion efficiency. In: Micro-structured and Specialty Optical Fibres IV (SPIE). 2015, 9507, p. 95070P.
  16. Mrázek, J., Kašík, I., Boháček, J., Proboštová, J., Aubrecht, J., Podrazký, O., Cajzl, J., Honzátko, P. Special optical fibers doped with nanocrystalline holmium-yttrium titanates (HoxY1-x)2Ti2O7 for fiber-lasers. In: Micro-structured and Specialty Optical Fibres IV (SPIE). 2015, 9507, p. 950703.
  17. Matějec, V., Podrazký, O., Kašík, I., Frank, M., Jelínek, M., Kubeček, V. Transmission of red-laser radiation by using Bragg fibers with air cores. In: Micro-structured and Specialty Optical Fibres IV (SPIE). 2015, 9507, p. 95070Q-95070Q-7. 
  18. Cajzl, J., Peterka, P., Honzátko, P., Mrázek, J., Podrazký, O., Todorov, F., Gladkov, P., Sahu, J. K., Nunez-Valazquez, M., Nekvindová, P., Kašík, I. Characterization of fluorescence lifetime of Tm-doped fibers with increased quantum conversion efficiency. In: Photonics, Devices and Systems VI (SPIE). 2015, 9450, p. 9450171-9450178.
  19. Podrazký, O., Kašík, I., Peterka, P., Aubrecht, J., Cajzl, J., Proboštová, J., Matějec, V. Preparation of optical fibers with non-circular cross-section for fiber lasers and amplifiers. In: Photonics, Devices and Systems VI (SPIE). 2015, 9450, p. 94501A1-94501A6.
  20. Matějec, V., Podrazký, O., Kašík, I., Frank, M., Jelínek, M., Kubeček, V. Comparison of characteristics of Bragg fibers with silica and air cores. In: Photonics, Devices and Systems VI (SPIE). 2015, 9450, p. 94500Y.
  21. Peterka, P., Honzátko, P., Kašík, I., Cajzl, J., Podrazký, O. Thulium-doped optical fibers and components for fiber lasers in 2 μm spectral range. In: Wave and Quantum Aspects of Contemporary Optics (SPIE). 2014, 9441, p. 94410B1-94410B6.
  22. Jelínek, M., Frank, M., Kubeček, V., Matějec, V., Kašík, I., Podrazký, O. Air core Bragg fibers for delivery of near-infrared laser radiation. In: The International Society for Optical Engineering (SPIE). 2014, 9441, p. 94411B.
  23. Mrázek, J., Nikl, M., Kašík, I., Podrazký, O., Aubrecht, J., Beitlerová, A. Nanoparticle-doped radioluminescent silica optical fibers. In: Optical Fibers and Their Applications (SPIE). 2014, 9228, p. 922805-1.
  24. Cajzl, J., Podrazký, O., Mrázek, J., Aubrecht, J., Matějec, V., Peterka, P., Nekvindová, P., Kašík, I. The influence of nanostructured optical fiber core matrix on the optical properties of EDFA. In: Optics and Optoelectronics (SPIE).  2013, 8775, p. 8775-09.
  25. Koška, P., Peterka, P., Kašík, I., Matějec, V., Podrazký, O. Double-clad rare-earth-doped fiber with cross-section tailored for splicing to the pump and signal fibers: analysis of pump propagation. In: Optics and Optoelectronics (SPIE). 2013, 8775, p. 8775-0V.
  26. Matějec, V., Kašík, I., Podrazký, O., Aubrecht, J., Frank, M., Jelínek, M., Kubeček, V. Preparation and characterization of bragg fibers with air cores for transfer of laser radiation. In: Optics and Optoelectronics (SPIE). 2013, 8775, p. 8775-08.
  27. Jelínek, M., Kubeček, V., Jelínková, H., Matějec, V., Kašík, I., Podrazký, O. Experimental investigation of high power picosecond 1.06 um pulse propagation in Bragg fibers. In: Nonlinear Optics and Applications (SPIE). 2013, 8772, p. 8772-1E.
  28. Šiška, P., Látal, J., Koudelka, P., Vitásek, J., Kašík, I., Vašínek, V. Coupling conditions for quasi-single mode optical fibers with different refractive index profile. In:  Optical Sensors (SPIE). 2013, 8774, p. 87741T.
  29. Peterka, P., Todorov, F., Kašík, I., Matějec, V., Podrazký, O., Šašek, L., Mallmann, G., Schmitt, R. Wideband and high-power light sources for in-line interferometric diagnostics of laser structuring systems. In: Wave and Quantum Aspects of Contemporary Optics ( SPIE). 2012, 8697, p. 869718.

IPE carries out fundamental and applied research in the scientific fields of photonics, optoelectronics and electronics. In these fields, IPE generates new knowledge and develops new technologies.

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