FOCUSING RESONATOR SYSTEM Russian patent published in 2020 - IPC G02B27/16 

FIELD: optics.

SUBSTANCE: invention relates to optical instrument-making, in particular to lighting systems designed to focus laser radiation, and can be used in studying properties of gaseous media, including chemical reactions, in small volumes, using light scattering spectroscopy. Linear or annular resonator including two return mirrors, two dichroic mirrors and two lenses are introduced into the focusing resonator system for multiple use of laser radiation. Method of focusing of radiation provides multiple passage of laser beam through measuring volume by system of mirrors of resonator, which returns radiation. Radiation sequentially passes all elements of optical circuit and returns, passing all passed path in reverse or same direction.

EFFECT: as a result of multiple passages of returned laser radiation there is increased intensity of useful signal of equipment; wherein by using a minimum number of optical elements requiring adjustment, which is achieved using an optical resonator, simple procedure for adjusting the focusing system.

5 cl, 3 dwg