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Tunable single-line first-overtone (FO) CO lasing on wavelengths from 2.7 up to 4.2 micrometer corresponding to overtone vibrational transitions from 13 yields 11 up to 38 yields 36 on 413 ro-vibrational lines was experimentally obtained. A parametric study of energetic and spectral characteristics of the single-line FO CO laser was carried out. Energy distribution over ro-vibrational lines was measured. The maximum specific output energy (SOE) came up to approximately 3 J/l Amagat, with single-line output efficiency being up to 0.6%. For the first time, a multi-quantum theoretical model was used to describe the tunable single-line FO CO laser. This multi-quantum approach demonstrated better agreement between theoretical calculations and observed experimental data for laser output as a function of vibrational quantum numbers.

Output characteristics of a pulsed e-beam controlled discharge laser operating on the first-overtone (FO) transitions (?V=2) of CO molecule have been studied both experimentally and theoretically. Various sets of dielectric mirrors with high reflectivity in the range of the overtone spectrum have been used for the laser resonator. Multiwavelength lasing has been obtained in the wide spectral range of 2.5 - 4.1 µm on vibrational transitions from 6?4 up to 37?35. Maximum output efficiency as high as 11% has been experimentally obtained for the broad band FO CO laser. Output efficiency of the laser operating on a few vibrational bands within the relatively narrow spectral range 2.5-2.7 µm comes up to 5% at entirely suppressed fundamental band (?V=1) lasing. FO CO lasing was observed within an initial gas temperature interval of 100-220 K. Spectral characteristics of the overtone laser operating on a selected set of vibrational bands have been analyzed theoretically. Theoretical calculations based on the experimental data predict that multiline FO CO laser efficiency can be increased up to 20%.

The theoretical, technical and technological aspects of the high energy and low angular divergence laser beam obtaining by means of Raman's scattering application in the secondary cascade are discussed. Several (2 - 6) unphased, independent, simultaneously working primary cascades were combined into one laser beam having 10 cm diameter and 10 15 - 10 16 W/cm 2 .sterad brightness at 40% summing efficiency.

The results of research on decrease in angular divergence of radiation of explosively pumped photodissociation lasers (EPPL) with the use of the method of phase conjugation for compensation of active medium optical nonuniformities and distortions of laser beam during its propagation through the atmosphere to an object of influence are presented.

The operation of laser system based on explosively pumped photodissociation lasers and designed to control the distribution of space debris not observed nowadays is described and the possibility of its breaking using laser radiation effect and its subsequent evaporation in the Earth's atmosphere is discussed.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

The principle of operation of explosively pumped lasers and variants of its construction are described, values of parameters achieved in practice are presented.

Three primary colors (red -- 620 nm, green -- 540 nm, blue -- 455 nm) are obtained by means of A2B6 e-beam pumped semiconductor lasers. Semiconductor plates 5 cm in diameter are used. Light output in white is 3000 lm (9 W). High resolution (up to the 2000 pix/line) gives us the possibility of using such an L-CRT projector in HDTV. The main characteristics of basic elements are given. It is possible to reach the L-CRT light output of 104 lm.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

A high-power KrF laser system based on a wide-aperture electron-beam pumped excimer laser `GARPUN' with injection-locking from a discharge pumped narrow-band oscillator has been developed. The laser radiation spectral brightness of approximately 5 X 1014 W/cm2 srad cm-1 with narrow linewidth approximately 0.1 cm-1 tunable near (lambda) equals 248 nm, and the output peak power of approximately 1 GW have been obtained.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Three methods are described for a high-speed diagnos-tics of compression dynamics of shell targets being spherically laser-heated on the installation "Kal'mar". The first method is based on the direct investigation of the space-time evolution of the critiical-density region for lid-laser emission (Ne 1021 Iicm-)) by ears of the streak photography of plasma image in the second-harmonic light. The second method involves investigation of time evolution of the second-harmonic spectral distribution by means of a spectrograph coupled with a streak camera. The use of a special laser pulse with two time-distributed intensity maxima for the irradiation of shell targets, and the analysis of the obtained X-ray pin-hole pictures constitute the basis of the third method.© (1979) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

The device for high-speed photography of rapidly changing transparent objects is described. The 19 frame picture of the laser formed strong shock wave made by this device is presented. The data of measurement of shock wave parameters are given, when ionization and radiative processes are taken into account. Among optical methods of laser plasma study of great significance is high speed frame photography by the method of laser illumination of the target. The method makes it possible to assess the fractional energy absorbed by plasma, the ion temperature, the degree of uniformity of the target irradiation, as well as other parameters1-5. The accuracy of measurements follow from the object parameters. This paper deals with the description of the device for shock wave ph9t9graphy forming during expansion of a spherical target heated 147 six beams in "Delphin-1"-°. The frame rate varies from 200 millions to 300 thousands sec-I at exposure equal 1.2 ns and at total number of frames - 19. This device provides the accuracy of registration of amplitude and phase optical of the target and plasma equaled to 30 lines/mm. The optical scheme of 19-frame device for shadow photography (DSP) is presented in Figure 1. It consists of the ruby laser 1, coordinating device 2, optical delay line 3, light splitting plates 4, telescopic expanders 5, matrix mirrors 6,7, converging mirror 8 and photocamera 9.© (1983) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.