SU594844A1 - Optical quantum generator - Google Patents

Abstract

OPTICAL KBAHTOBblf * HA GENERATOR OF ORGANIC DYE SOLUTIONS with excitation from an auxiliary laser, containing a triangular prism, the apex angle of which is 90 **, and one of the side faces is in contact with the dye generating solution, characterized in that, in order to ensure simultaneous generation at several wavelengths, an auxiliary laser beam divider and a mirror located in front of the entrance face of the prism are inserted in such a way that the propagation direction of the auxiliary laser The laser beam and its part, reflected in series from the beam splitter and the mirror, converge at the input face of the prism. h ^ E

Description

The invention relates to the field of quantum electronics and can be used in the development of optical quantum generators (laser) with several simultaneously generated stable radiation frequencies.

Known dye lasers with distributed feedback induced by pump radiation, in which selective elements are not required to obtain a narrow generation line, are known.

A known laser on solutions of organic dyes with excitation from an auxiliary laser, containing a triangular prism, with an apex angle of 90 °, is known, and one of the side faces is in contact with the generating solution. In the famous

The device pumped auxiliary laser radiation is directed to the base of the prism. A part of the pumping stream falls directly on the prism face, which is in contact with the active solution and, refracted at the boundary, goes inside the solution. The circle of the pumping flux falls on the side edge of the prism surrounded by air, and after complete internal reflection from it, it is also directed to the dielectric-liquid interface. The interference of the two pump beams inside the liquid leads to the formation in the active, solution of spatial gratings of the gain and refractive index. Thereby, conditions are created for the excitation in the dye solution of the optical generation with an osteopathic distributed feedback induced by pumping. However, the known laser oscars s generate radiation at only one wavelength each time — a wave defined by the ratio i. Ai o, -}. n sinQ - refracted light index, and the color of the solution and the prism material, 1 (c is the pump wavelength, 9 is the angle of incidence of the beam pumped to the dielectric liquid interface. The invention aims to create. An OCG on solutions of organic dyes providing simultaneous generation at several wavelengths. This is achieved by introducing a beam divider into the RCG. auxiliary laser radiation and a mirror located in front of the entrance face of the prism in such a way that the propagation of the auxiliary laser radiation and Fig. 1 shows the optical scheme of the proposed laser with FIG. 2, a schematic of the rays for the laser prism. Radiation of pump 1 of the auxiliary laser The beam splitter 2, part of the pumping flux 3 passing through the radiation beam splitter, and the pump flux suit k, reflected successively from the beam splitter and the mirror 5, converge on the input face of the prism 6, B in case of simultaneous fall on the surface of the coherent prism beams pumping 3 and 7 cu cell. the solution will drop two pairs of beams (З-З and -4 which, penetrating into the cuvette, forming a complex system of standing waves in the solution. This system corresponds to six amplitude-phase gratings with the following periods: "2Pr sincdT 2-n„ sinw,. . ™ .and „d. / 0 ,.p sin (----) 2L .. 2n, sln () where is the pump wavelength (in air) Jnp the refractive index of the solution;, and Kg are the angles of refraction beams: 3.3 and fk in the dye solution. The bisectors of the angles between the interfering beams (, Z, Z, Z, Zg), indicating the arrangement of the layers of spatial lattices, are normal to the surface These external environment - solution angles Ср, (|, 0; Cf,, (О. J. .. ft. (n «-Л4 4 2 2% From the above relations it follows that with a certain selection of angles and CS, you can get simultaneous generation at two independent from each other wavelengths AI Thud. with direction of propagation along the interface. Simultaneously, generation of radiation with wavelength B-Y 3, 4) should be observed in the direction perpendicular to bis0. four- . The angle angles are + –5. When the angle of intersection of the beams 3 is changed and by turning the mirror 5, two radiation lines are tuned at the same frequency of the third line. Simultaneously, the restructuring of all three lines is achieved by turning the prism 6 around its axis. Thus, the introduction of an auxiliary laser beam and a mirror splitter into a laser on organic dye solutions allows one to obtain lasing simultaneously at several wavelengths.

w. / Z 9

Claims (1)

OPTICAL QUANTUM GENERATOR ON ORGANIC DYE SOLUTIONS solutions with excitation from an auxiliary laser, containing a triangular prism, the angle at the apex of which is 90 °, and one of the side faces is in contact with the dye generating solution, characterized in that, in order to ensure simultaneous generation at several wavelengths, a beam splitter of the auxiliary laser and a mirror are introduced into it, located in front of the input face of the prism so that the radiation propagation direction is ogatelnogo laser part and reflected sequentially from the beam splitter and mirrors converge at the entrance face of the prism. ~ ω | s · ---- / * ·