Search Results - "Tyrtyshnyy, V. A."

An Apparatus for Studying the Laser Radiation Effects on Biotissue by Minaeva, E. D., Minaev, S. E., Nikitin, N. S., Gulyashko, A. S., Larionov, I. A., Tyrtyshnyy, V. A., Yusupov, V. I., Minaev, N. V.

“…An apparatus for studying the processes of laser action on various materials, including biological tissue, is described. The system makes it possible to obtain…”
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Equivalent temperature of nonlinear-optical crystals interacting with laser radiation by Ryabushkin, O. A., Myasnikov, D. V., Konyashkin, A. V., Tyrtyshnyy, V. A.

“…Temperature calibrated piezoelectric resonances of internal acoustic vibration modes of a nonlinear-optical crystal during its heating by high-power laser…”
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PP-crystals Lengths Optimization to Improve the Efficiency of Two-Cascade Nearly-Degenerate DFG of 3µm Radiation from Fiber NIR Lasers by Larionov, I. A., Gulyashko, A. S., Tyrtyshnyy, V. A.

“…High absorption of the electromagnetic radiation in the spectral range around 3 µm wavelength by water and molecules of organic compounds provide opportunities…”
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High-efficient DFG of fiber lasers radiation in the spectral region of 3um for soft tissue ablation by Larionov, I. A., Gulyashko, A. S., Alekseev, D. A., Tyrtyshnyy, V. A.

“…High-efficient 3μm wavelength laser source is proposed for soft tissue surgery. The Device is based on difference frequency generation of Er and Yb fiber…”
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Optimization of the Efficient Single Pass Two-Stage DFG of Er and Yb Fiber Lasers Radiation into Mid-Infrared Region by Gulyashko, A. S., Larionov, I. A., Tyrtyshnyy, V. A.

“…High power laser radiation sources with wavelengths near 3 μm are indispensable for processing of organic and high water-containing materials. These…”
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Tunable Near 3-μm Difference Frequency Generation using Ytterbium and Broadband Seed Erbium Fiber Lasers by Larionov, I. A., Gulyashko, A. S., Tyrtyshnyy, V. A.

“…The absorption peaks corresponding to vibrational energy levels of various molecules are located in the mid-infrared (mid-IR) spectral range. For instance, the…”
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Mode instability observation in fiber amplifier of single-frequency radiation at 1560 nm wavelength by Puju, P. V., Zelenova, M. V., Tyrtyshnyy, V. A.

“…Mode instability was observed in fiber amplifier of single-frequency radiation at 1560 nm wavelength. Mode instability threshold is 3,5 W at 20 mW input signal…”
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Single-mode broadband red fiber laser by Byalkovskiy, O. A., Tyrtyshnyy, V. A., Golubyatnikov, E. S.

“…18 W of red laser radiation at 0.63 μ with 3 nm spectral bandwidth was achieved by sum frequency generation (SFG) of Er and Yb pulsed fiber lasers radiations…”
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Generation of single-mode blue radiation by two steps sum frequency mixing in LBO crystal by Golubyatnikov, E. S., Byalkovskiy, O. A., Tyrtyshnyy, V. A.

“…Blue laser radiation of 0.7 W power at 0.448 μ was obtained by cascading sum frequency generation of radiations with 1.55 μ and 0.63 μ wavelengths. Red…”
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Impedance spectroscopy in laser calorimetry of nonlinear-optical crystals by Ryabushkin, O. A., Myasnikov, D. V., Konyashkin, A. V., Tyrtyshnyy, V. A., Vershinin, O. I., Nikitin, D. G., Surin, A. A.

“…Dependence of the nonlinear-optical crystal piezoelectric resonance frequencies on temperature was exploited for detailed investigation of crystal interaction…”
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Resonant acoustic calorimetry of the interaction of laser radiation with nonlinear-optical crystals by Konyashkin, A V, Doronkin, A V, Tyrtyshnyy, V A, Myasnikov, D V, Ryabushkin, O A

“…Resonant acoustic calorimetry technique gives the opportunity to measure the crystal temperature during linear and nonlinear interaction of the laser radiation…”
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A piezoelectric resonator for optical power measurement with radiation beam quality retaining by Tyrtyshnyy, V. A., Konyashkin, A. V., Ryabushkin, O. A.

“…A method for measuring the power of laser radiation in a wide range of wavelengths is introduced. The method is based on weak heating of an optically…”
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Pump and idler beams parameters dependence on pump power under conditions of mid-infrared difference frequency generation in PPLN by Ostapiv, A. Yu, Tsypkin, V.P., Cherpak, P.S., Gulyashko, A.S., Larionov, I.A., Tyrtyshnyy, V.A.

“…In this work, aspects of the spatial distribution of pump and idler beams was studied under conditions of a two-stage nonlinear conversion of high average…”
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Degradation of syloxane polymers under the condition of heating by powerful laser radiation exiting through the side surface of an optical fiber by Cherpak, P.S., Ivanov, G.Yu, Larionov, I.A., Tyrtyshnyy, V.A.

“…The results of experiments on determination of the optical absorption coefficient at different wavelengths in a polysiloxane polymer, used in fiber optics, are…”
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Mid-Infrared Difference Frequency Generation of ER and YB Fiber Lasers Radiation in Periodically Poled Crystals by Larionov, I. A., Gulyashko, A. S., Tyrtyshnyy, V.A.

“…The parametric generation of mid-infrared radiation in the periodically poled lithium niobate and lithium tantalate nonlinear-optical crystals was…”
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High power single-mode red fiber lasers by Tyrtyshnyy, V. A., Byalkovskiy, O. A.

“…Red laser radiation of 15 W power at 0.63 μ was obtained by sum frequency generation of 1.55 μ and 1.06 μ radiation wavelengths from Er and Yb pulsed fiber…”
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Influence of a backward optical signal on mode instability in Yb3+-dopedfiber amplifier by Alekseev, D. A., Tyrtyshnyy, V. A., Kuznetsov, M. S., Antipov, O. L.

“…Influence of both backward reflections and laser radiation of independent source propagating in backward direction of ytterbium fiber amplifier on mode…”
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Equivalent temperature of nonlinear-optical crystals in process of laser frequency conversion by Ryabushkin, O. A., Konyashkin, A. V., Myasnikov, D. V., Tyrtyshnyy, V. A., Baranov, A. I.

“…Summary form only given. For more than fifty years numerous experimental and theoretical works give evidence of the crucial functional role of the…”
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Piezoelectric resonance spectroscopy of crystals in process of laser frequency conversion by Ryabushkin, O. A., Konyashkin, A. V., Myasnikov, D. V., Tyrtyshnyy, V. A.

“…Dependence of the poled nonlinear-optical lithium niobate (PPLN) crystal temperature on laser power in the course of laser frequency conversion was measured…”
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Kinetics of the nonlinear-optical crystal equivalent temperature during the interaction with single-mode high-power laser radiation by Doronkin, A.V., Konyashkin, A.V., Tyrtyshnyy, V.A., Myasnikov, D.V., Ryabushkin, O.A.

“…Influence of the high-power laser radiation on the piezoelectric resonance in the nonlinear-optical KTiOPO4 crystal was observed. Equivalent crystal…”
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