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This article is cited in 9 scientific papers (total in 9 papers)
Nonlinear optical phenomena
Laser radiation intensity limiter based on polymethine dyes
T. N. Kopylovaa, A. P. Lugovskyb, V. M. Podgaetskyc, O. V. Ponomarevad, V. A. Svetlichnyia a V.D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University
b Research Institute of Applied Physical Problems, Belarusian State University, Minsk
c Moscow State Institute of Electronic Technology (Technical University)
d Deltacor Limited Liability Company, Dolgoprudnyi, Moscow Region
Abstract:
The nonlinear optical properties of a number of polymethine dyes (PD 7005, 7006, 7031, and 7098) with a fixed polymethine chain are studied upon their excitation by the focused second-harmonic radiation from a nanosecond Nd:YAG laser. It is found that PD 7098 has the minimum linear absorption over a greater part of the visible spectrum and the strongest nonlinear reverse saturable absorption. The attenuation coefficient of the 100-MW cm-2 laser radiation in the ethanol solution of this dye is K=14. The characteristics of a single-stage high-power-laser-radiation limiter consisting of two confocal lenses with a focal distance of 5.5 cm are optimised. The maximum values of attenuation coefficients measured in experiments are 420 (for the initial transmission T0≈50%) and 170 (T0≈70%). The singlet—singlet absorption cross sections of the dyes are estimated from experiments. The efficient laser radiation limiter considered in the paper features a broad spectral range in the visible region and a high service time.
Received: 25.08.2005 Revised: 17.01.2006
Citation:
T. N. Kopylova, A. P. Lugovsky, V. M. Podgaetsky, O. V. Ponomareva, V. A. Svetlichnyi, “Laser radiation intensity limiter based on polymethine dyes”, Kvantovaya Elektronika, 36:3 (2006), 274–279 [Quantum Electron., 36:3 (2006), 274–279]
Linking options:
https://www.mathnet.ru/eng/qe13134 https://www.mathnet.ru/eng/qe/v36/i3/p274
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