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18. Intracavity parametric conversion of radiation from a pulsed Nd:YVO4 laser with high-power diode pumping.

Author

Bogdanovich, M., Enzhievskii, A., Ryabtsev, G., Burov, L., Ryabtsev, A., Shchemelev, M., Mashko, V., Teplyashin, L., and Kraskovskii, A.

Subjects
*OPTICAL parametric oscillators, *OPTOELECTRONIC devices, *LASER beams, *EMISSION spectroscopy, *SPECTRUM analysis, *GAUSSIAN distribution
Abstract

We have achieved intracavity parametric conversion of the radiation from a laser based on Nd:YVO4 with high-power diode pumping. An LiF2- crystal was used as the passive Q-switch for the Nd:YVO4 laser. We have shown that by using an active element in the master laser with a passive region, we can form pulsed laser beams at a wavelength of 1.57 μm with peak power 3.2 kW and repetition rates up to 80 kHz, with beam quality parameter 1.4–1.8. [ABSTRACT FROM AUTHOR]

Published
2006
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19. Temperature Dependences of the Viscosity of Metals

Author

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, Bogdanovich, M. P., Baum, B. A., FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, Bogdanovich, M. P., and Baum, B. A.

Abstract

For pure metals three types of given dependences are observed: (1) the polytherm has its convex side facing the abscissa, which is probably explained by the weakening of bonds during the thermal expansion of a fluid: (2) the curve has its concave side to the abscissa, the activation energy increases with a rise in temperature, which can be caused by an increase in the coordination number, the integral bond energy increases, regardless of the possible weakening of a single bond, this can also take place in the case of intensive metallization of primarily covalent bonds; (3) the given linear dependence, the invariability of E with a rise in temperature is probably explained by the compensating effect of several factors., Edited trans. of Uralskii Politekhnicheskii Institut, Sverdlovsk. Trudy (USSR) n167 p96-98, 1968, by H. Peck.

Published
1972

20. PROBLEMS OF APPLIED GYROSCOPY. NUMBER 4, 1968 (SELECTED ARTICLES)

Author

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, Rivkin, S. S., Bogdanovich, M. M., Bessonov, A. G., Petrova, V. V., FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, Rivkin, S. S., Bogdanovich, M. M., Bessonov, A. G., and Petrova, V. V.

Abstract

Contents: Concerning the geometry of a directional gyroscope mounted on a swinging base; The generalized gyro instrument; and Empirical formulas for calculating the aerodynamic resistance of a gyroscope motor.

Published
1970

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