Purpose: the development is used to create stable, inexpensive, energy-efficient solid-state lasers of the IR and visible ranges, as well as to create rangefinder and navigation systems of increased reliability.
Advantages: low cost compared to analogues, long service life of the laser emitter, preservation of operability in conditions of a sharp change in ambient temperature and exposure to mechanical loads. The development uses a fundamentally new layout scheme and materials of the active medium.
Main Features: The proposed technical solution makes it possible to provide: generation in the spectral region of about 1.5 microns, which is conditionally safe for the organs of vision, is located in the "window" of atmospheric transparency and coincides with the spectral range of operation of highly sensitive photodetectors by performing an active element made of glass doped with trivalent erbium or ytterbium and erbium ions; obtaining a modulated Q-factor mode by using a passive shutter in the form of a plane-parallel plate or an electro-optical shutter installed between the active element and the output mirror of the resonator; reducing electromagnetic interference due to an optical pump module containing at least one laser pump diode and a Q-factor modulator made in the form of a passive shutter in the form of a plane-parallel plate; improvement of the spatial characteristics of the generated radiation due to the use of an optical pumping module containing a fiber light guide for pumping radiation into the lens, and (or) a passive shutter in the form of a plane-parallel plate; generation in the spectral region of about 1.5 microns in the mode of passive Q-factor modulation due to the implementation of a passive shutter from a magnesium - aluminum spinel crystal doped with ions divalent cobalt; increasing the power of the generated radiation when using a Q-factor modulator made in the form of an electro-optical shutter installed between the active element and the output mirror of the resonator; increasing the efficiency of generation by using an optical pumping module containing a fiber light guide for pumping radiation into the lens; increasing reliability and durability by installing a passive shutter so that the normal to its working the surfaces are formed by the Brewster angle with the resonator axis.
Developer: Kisel V.E., Doctor of Physics and Mathematics, Professor
Contacts: tel. +375 (17) 293 96 85, e-mail: ontim@bntu.by
Small-sized pulsed laser emitter with longitudinal pumping
