| 摘要 |
FIELD: laser engineering. ^ SUBSTANCE: proposed solid-state pulsed laser system designed for operation in subnanosecond and nanosecond frequency bands incorporating provision for converting radiation frequency into higher harmonics in visible and ultraviolet spectrum ranges has microchip laser with passive gate of YAG:Cr4+ crystal, two-port amplifier, and nonlinear components for converting radiation frequency into higher harmonics. In addition, it is provided with preamplifier. Introduced into preamplifier optical system on one end of active element are first nontransmitting mirror, input polarizer, electrooptic element, 90-deg. polarization-plane shifter installed on first two-position shifting device, prism, output polarizer, turning mirror, second nontransmitting mirror covered with first section of double-section screen, and third nontransmitting mirror. Electrooptic element is introduced in optical system of two-port amplifier. ^ EFFECT: ability of generating unidirectional digitally frequency-tuned pulses with smoothly varying power. ^ 1 cl, 1 dwg, 1 tbl |
