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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v78.i8.80
pages 725-741

SOLID ACTIVE MEDIA FOR TUNABLE LASERS BASED ON DYE-DOPED POLYURETHANES

S. V. Nickolaev
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
V. V. Pozhar
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
M. I. Dzyubenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine; V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine; Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
K. S. Nickolaev
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine

RÉSUMÉ

This article is devoted to a brief review of the main results of the research cycle aimed at developing solid active media based on dye-activated polyurethane compounds. The ultimate goal of these studies is the creation of solid-state active elements that make it possible to realize a wide-band solid-state dye laser (SSDL), which emits frequency-tunable radiation with a microsecond pulse duration. The problem has been solved mainly by experimental methods. At the same time, the studies carried out included a full range of works from the production of samples of solid-state active media to the study of the lasing characteristics of the active elements created. In the course of the work, lasents based on industrial polyurethanes of various grades activated with the Rhodamin 6G, Sulforhodamine 101, Oxazin 17, and Oxazin 1 dye have been created, and their spectral-luminescent characteristics have been studied. The experimental samples of laser matrices are made. The optical properties of the created media are studied, and the influence of the technique of making samples on the nature of possible distortions of their optical homogeneity is determined. The emission ability of polyurethane matrices is studied. With transverse monochromatic excitation, laser emission on polyurethane matrices has been obtained with an efficiency of 12 to 26% and energies from 23 to 127 mJ. Radiation resistance and possible service life of polyurethane media are investigated. The thermo-optical properties of polyurethane active media and their effect on the directivity of SSDL radiation is studied. The effect of induced birefringence, which occurs under conditions of asymmetric pumping of microsecond duration, is observed. It is found that under such conditions, polyurethane active elements emit polarized radiation even when excited by depolarized light. The possibilities of narrowing and tuning the emission spectrum of polyurethane matrices in dispersive resonators with angular and amplitude types of selection have been investigated. The laboratory model of a tunable SSDL with replaceable polyurethane laser elements generating a pulsed radiation of a microsecond duration in the spectral range of 565...700 nm is created and tested. The results of the performed studies allow us to conclude that industrial polyurethane compounds can be successfully used as solid media for active elements of SSDL.

RÉFÉRENCES

  1. Bezrodnyi, V.I. and Ishchenko, A.A., (2000) , Laser media based on colored polyurethane, Quantum Electron., 30(12), pp. 1043-1048l, (in Russian). DOI: http://dx.doi.org/10.1070/ QE2000v030n12ABEH001862

  2. Bezrodnyi, V.I. and Ishchenko, A.A., (2001) , High efficiency lasing of a dye-doped polymer laser with 1.06 μm pumping, Appl. Phys. B (Lasers and Optics), 73(3), pp. 283-285. DOI: https://doi.org/10.1007/s003400100646

  3. Bezrodnyi, V.I., Derevyanko, N.A., Ishchenko, A.A., and Karabanova, L.V., (2001) , A dye laser with a polyurethane matrix, J. Tech. Phys., 46(7), pp. 858-863, (in Russian). DOI: https://doi.org/10.1134/1.1387547

  4. Nikolaev, S.V., Pozhar, V.V., and Dzyubenko, M.I., (2006) , Generation of microsecond laser pulses in polyurethane matrices doped with dyes, Quantum Electron., 36(8), pp. 758-762, (in Russian). DOI: http://dx.doi.org/10.1070/ QE2006v036n08ABEH013286

  5. Nikolaev, S.V., Pozhar, V.V., and Dzyubenko, M.I., (2011) , Emission characteristics of oxazine dyes incorporated in solid polyurethane matrices, Telecommunications and Radio Engineering, 70(3), pp. 269-282.

  6. Nikolaev, S.V., Pozhar, V.V., Dzyubenko, M.I., and Doroshenko, A.O., (2009) , Far-red polyurethane- host solid-state dye laser, Quantum Electron., 39(9), pp. 789-792, (in Russian). DOI: http://dx.doi.org/10.1070/QE2009v039n09ABEH014075

  7. Nikolaev, S.V., Pozhar, V.V., and Dzyubenko, M.I., (2010) , Lasing properties of active medium based on Sulfo-rhodamine 101 incorporated into commercial polyure-thane compound, Quantum Electron., 40(12), pp. 1112-1115, (in Russian). DOI: http://dx.doi.org/10.1070/QE210 v040n12ABEH014425.

  8. Nikolaev, S.V., Pozhar, V.V., and Dzyubenko, M.I., (2012) , Emission features of solid-state dye lasers at a transverse method of excitation, Telecommunications and Radio Engineering, 71(5), pp. 465-479.

  9. Nikolaev, S.V., Pozhar, V.V., and Dzyubenko, M.I., (2013) , Research of new solid-state active media on the basis of industrial polyurethane compounds, activated by dyes, Telecommunications and Radio Engineering, 72(5), pp. 435-445.

  10. Nikolaev, S.V., Pozhar, V.V., and Dzyubenko, M.I., (2015) , Influence of the refractive index anisotropy on the optical and emission characteristics of laser matrices based on the dye-doped polyurethanes, Telecommunications and Radio Engineering, 74(7), pp. 619-628.

  11. Nikolaev, S.V., Pozhar, V.V., Dzyubenko, M.I., and Nikolayev, K.S., (2016) , Solid-state dye laser with dispersive resonator, Telecommunications and Radio Engineering, 75(3), pp. 255-263. DOI: 10.1615/TelecomRadEng. v75.i3.70


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