| 摘要 |
FIELD: quantum electronics; solid-state lasers used in laser technology, laser communications, scientific research, installations developed according to laser thermonuclear fusion program. SUBSTANCE: temperature-gradient active element is used for selective excitation of activator over wave length by ion emission so that transfers to pumping levels with energy Eand then to metastable level with energy εare made by ions on excited level only with energy 0>ε<ε. Pumping intensity Iin this case is maintained at level I<I(λ), where I(λ) is clarification intensity of medium on wave length λ; average temperature Talong activator section is maintained as close as possible to T, but not higher than T,, where Tand Tare, respectively, inflection point and point of maximum on curve showing population of level Nas function of temperature. EFFECT: provision for controlling distribution profile of inversion in active elements of solid-state laser, including prevention of concentration of stored energy in peripheral sections of active medium, thereby improving uniformity of inversion distribution. 2 dwg |
