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Highly coherent tunable diode lasers with an external resonator are used in projects related to the development of optical frequency standards (on ytterbium and thorium ions), in studies of degenerate gases, Rydberg atoms.

It is designed to detect local areas of radioactive contamination on the ground, in residential and working premises, measure the dose rate of gamma radiation, the accumulated dose for a period set by the user, and an audible alarm of exceeding the threshold of the dose rate of gamma radiation set by the user. Technical specifications: measurement of the power of the equivalent (exposure) dose of gamma radiation in the range from 0.1 to 999 mSv / h with the presentation of the results on a digital indicator measurement of the accumulated radiation dose from the moment of switching on, as well as from the moment of a special reset operation to zero, after which a new cycle of dose accumulation is carried out while the device is switched off. The maximum indicated value of the accumulated dose is 999 mSv signaling the excess of one of the user–selected threshold power levels of the equivalent (exposure) dose of 0.5; 1; 2 and 5 mSv/ h with an intermittent sound signal , the alarm time for exceeding the threshold level is not more than: - for the threshold level of 0.5 and 1 mSv/ h – 60 s - for threshold levels 2 and 5 mSv/h - 10 s the energy dependence of the device readings is not more than ± 45% in the energy range from 0.05 to 1.5 MeV the time of setting the operating mode is not more than 10 s the supply voltage (3.3-2.4) V the consumption current when registering the natural radiation background is not more than 0.35 mA and not more than 20 mA when registering exceeding the threshold level of 5 mSv / h the continuous work when registering the natural radiation background without changing batteries for at least 25 days the overall dimensions of the device are not more than 70 x 137 x 25 mm and not more than 85 x 150 x 40 mm with packaging the weight of the device is not more than 150 g without packaging and not more than 200 g with packaging working conditions of use: - ambient temperature from + 5 to + 40 ° C - relative humidity up to 80 % at a temperature of 35 ° C