FIELD: physics.
SUBSTANCE: light source RGB for illumination-projection system includes Red, Green and Blue lasers, each of which produces randomly polarized single-mode light with width of spectral line of at least 4 nm. Green laser comprises pumping with a MOPFA configuration (master oscillator - power fibre amplifier) to output a pulsed randomly polarized broadband single-mode pumping beam with a fundamental wavelength in a one-micron wavelength range and a second-harmonic generator with a nonlinear lithium tribotyrobate. Red laser is configured with fibre laser pumping of quasi-continuous radiation, which generates a randomly polarized broadband single-mode pulsed pumping beam with average wavelength, and a frequency converter with a nonlinear lithium tribotyrobate crystal.
EFFECT: technical result is high power, providing required brightness, large width of spectral line, which minimizes formation of speckle structure, and stable average wavelength, which does not depend on temperature fluctuations and diode bias current.
18 cl, 26 dwg
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