Some aspects of the kinetics of emission of solid-state sweep lasers

Anokhov, S. P.; Kravchenko, V. I.; Khanin, Ya I; Khizhnyak, Anatoliy

doi:10.1070/qe1976v006n01abeh010795

Cited by 4 publications

(3 citation statements)

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“…This process is recurs at each round trip. This type of sweeping is known 16 to drag out the generated pulse duration that is illustrated Figure 9 for the master laser. Moreover, because of the non-degenerate character of the FWM process, the a ) b ) Figure 8.…”

Section: Tracking Of the Moving Objectmentioning

confidence: 99%

“…As it was discussed in Section 2.1, the Doppler shifted light scattered by the target is seeded into the master laser cavity and stimulate the oscillation on the shifted wavelength. In our experimental situation the frequency shift is less then the cavity mode's spectral bandwidth, and therefore the moving output coupler produces the regime of frequency sweep oscillation 16 .…”

Section: Tracking Of the Moving Objectmentioning

confidence: 99%

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System concept and some characteristics of the coupled-cavity laser system for active target tracking

et al. 2002

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We performed architecture and design analyses of coupled-cavity laser systems to arrive at a concept for tracking distant objects. We also conducted an experimental study of such a system using a pulsed ruby laser as a prototype for the laboratory tests. Both laser cavities were coupled through the dynamic holographic grating. Special attention was paid to characterization of the coupled-cavity laser system and its operation. In particular, we studied the formation of holographic grating that serves to couple the cavity; the slope efficiency of the master and slave arms and their dependence upon cavity parameters. The resulted experimental data and analyses verified the tracking principle and proved the feasibility of the proposed phase-conjugate double cavity laser system for tracking moving object at distance with high accuracy.

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Section: Tracking Of the Moving Objectmentioning

confidence: 99%

Section: Tracking Of the Moving Objectmentioning

confidence: 99%

System concept and some characteristics of the coupled-cavity laser system for active target tracking

et al. 2002

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“…A new type of tunable lasers, sweep lasers, whose dynamics was studied in the key works [3][4][5] by Ya. I. Khanin in the field, significantly contributed to the development of these methods [1,2].…”

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confidence: 99%

Correlation spectral analysis of a halogen mixture by laser radiation with synthesized spectrum

Kravchenko

Соколов

2004

Radiophys Quantum Electron

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A laser with synthesized radiation spectrum is used for creating spectral masks for correlation analysis of a mixture containing molecular iodine and bromine. The choice of the wavelengths of spectral masks is substantiated, the accuracy and sensitivity to the presence of interfering substance are studied, and the influence of the mask instability is discussed.Spectroscopic methods based on tunable lasers are widely used in almost all science and engineering fields. A new type of tunable lasers, sweep lasers, whose dynamics was studied in the key works [3][4][5] by Ya. I. Khanin in the field, significantly contributed to the development of these methods [1,2]. The progress in these techniques and the related method of slitless laser spectrometry [6] is mainly due to the solution of the problem of all-electronic tuning of dispersion cavities, which made it possible to program the law of tuning, to improve its rate and accuracy, and to ensure reproducibility of tuning to the specified wavelength [7,8].The brand new method is related to the electronic tuning of the multifrequency oscillation spectrum, which opened up the way for artificial synthesis of radiation spectra with specified structure. This, in turn, contributed to the further development of the method of correlation frequency spectroscopy based on the correlation between the structure of the probing radiation spectrum and the structure of the absorption (reflection, amplification) spectrum of the studied material [8,9].The usefulness of measuring the absorption simultaneously at several wavelengths was reliably demonstrated in the method of correlation mask-spectrometry [10]. One mask transmits light in the maxima of the absorption spectrum, and the other mask, in its minima. In such cases, the difference between the corresponding readouts of the device is the measure of the amount of studied material, which is used for determining its concentration. Compared with other methods of gas analysis, this method allows one to significantly improve the signal-to-noise ratio for mixtures with overlapping absorption spectra.Within the framework of our approach, the spectral masks are created and changed by using a laser with electronic synthesis and tuning of the multifrequency spectrum [11][12][13]. The studies performed for the dye lasers show the possibility of stable generation of several spectral components whose wavelengths can be independently tuned by 8-10 nm. The masks with an arbitrary large number of components can be realized in the regime of the programmed tuning when the components are generated in succession. Such masks allow us to monitor several materials simultaneously, which is especially useful for analyzing mixtures with the time-varying composition.In this paper, we study the possibility of using the correlation methods for analyzing gas mixtures containing molecular iodine and bromine. The practical need in this method is related to the fact that the absorption spectra of these materials, which often accompany each other in various natural a...

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Adaptive laser system for active remote object tracking

Markov

Khizhnyak²

Proceedings, IEEE Aerospace Conference

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Some aspects of the kinetics of emission of solid-state sweep lasers

Cited by 4 publications

References 0 publications

System concept and some characteristics of the coupled-cavity laser system for active target tracking

System concept and some characteristics of the coupled-cavity laser system for active target tracking

Correlation spectral analysis of a halogen mixture by laser radiation with synthesized spectrum

Adaptive laser system for active remote object tracking

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