METHOD OF GENERATING INFRARED RADIATION DEVICE FOR REALISING SAID METHOD Russian patent published in 2011 - IPC H01S3/08 H01S3/10 

FIELD: physics.

SUBSTANCE: beam of radiation with wavelength shorter than 2 mcm is converted to first and second beams of infrared radiation, the wavelengths of which are in the range of 2-6 mcm, and the average power is modulated by a signal whose Fourier spectrum is in the range of 0.1 MHz. The beam of radiation with wavelength shorter than 2 mcm is converted to a first beam of quasi-continuous radiation with wavelength λ₁ in the range of 2-3.7 mcm. The first beam is split into two parts, the first of which is converted to a second beam of quasi-continuous radiation with wavelength λ₂ in the range of 3.7-6 mcm. The second beam is converged with the second part of the first beam to form a single beam of double-frequency infrared radiation in the range of 2-6 mcm. The device for realising the method has a pumping laser with wavelength shorter than 2 mcm and an optical generator. The optical generator has first and second active elements placed inside optical resonators. The first active element emits at wavelength λ₁ in the range of 2-3.7 mcm and the second emits at wavelength λ₂ in the range of 3.7-6 mcm. The device has optical elements which facilitate convergence of the first and second beams into a single beam of double-frequency infrared radiation.

EFFECT: possibility of generating two beams of radiation with wavelength in the range of 2-6 mcm, tuned separately, wider frequency range of modulating infrared radiation power and high reliability.

10 cl, 9 dwg