Absolute gravimeters on the basis of atomic interferometer with freely falling cold atoms have already demonstrated top-level performance in terms of sensitivity, long-term stability and accuracy which are comparable with the best characteristics of classical ballistic gravimeters, as confirmed in international comparisons. The accuracy of 10 nm·s‑2 is demonstrated not only by stationary laboratory absolute atomic gravimeters, but also by devices intended for field measurements [1]. Atomic gravimeters have a number of potential advantages — the absence of moving parts, a higher sampling rate and they are considered today as a promising area of modern gravimetric technology. In this paper, an overview of publications describing the physical schemes of modern atomic gravimeters is given, the main units of the atomic gravimeter, their purpose and principles of functioning are considered in details. The main attention is paid to laser systems in terms of determining the achievement of necessary conditions for cooling atoms, manipulation of their motion, preparation of quantum states, functioning of the atomic interferometer and detection of the signal. As can be seen from the overview, in modern atomic gravimeters, predominantly semiconductor lasers are used with high, and in some cases, unique technical parameters, which ensure simultaneous achievement of high values of output power, monochromaticity, stability of energy parameters and frequency of radiation, precision control of wavelengths at sufficiently wide range of their values. The creation of such laser systems requires the solution of a number of complex technical problems — the development and creation of effective laser amplification schemes, modulators for the formation of the necessary laser frequencies, and the schemes for locking laser frequencies along the absorption lines of alkaline atoms. The paper also examines the requirements for a highly vacuum system, magnetic shielding schemes, vibration and seismic protection, and discusses the prospects of development of such gravimeters in Ukraine.