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2Laser spectroscopy for environment sensing and agriculture
applications
V.N. Lednev'*, M.Ya. Grishin1, P.A. Sdvizhenskii1, S.M. Pershin1, A.F. Bunkin1
1-Prokhorov General Physics Institute, Russian Academy of Science, Moscow, Russia
The urbanization and rapid population growth resulted in negative impact for the environment as well as for the agriculture industry. The high quality and efficient farming require continuous monitoring of different samples types at any stage of food production chain (soil, fodder, plant materials and meat) in order to prevent any pollution by hazardous materials but sustaining the good state of the environment. Optical instruments can be used to remotely provide the online sensing for different purposes but laser spectroscopy techniques provided superior results due to unique properties of laser emission [1]. Here we reviewed the applications of laser spectroscopy techniques for environmental and agriculture sensing. Specifically, laser induced fluorescence, Raman spectroscopy and laser induced breakdown spectroscopy (LIBS) techniques have been discussed with the emphasis on its perspectives for online sensing. The examples of the developed compact instruments capable to provide express measurements including sensing from the drones (i.e., unmanned aircraft or ship vehicles) are presented. Simple and economy fluorescence imager can be very useful for online control of the cattle food preparation control. Furthermore, compact fluorescence LIDAR (LIght Detection And Ranging) was installed at the small drone for early detection and location of plants under stress in agricultural fields [2]. The developed Raman LIDAR demonstrated perspectives of space resolved sensing of freshwater reservoirs for water quality monitoring as well as ecology diagnostics.
This work was supported by a grant of the Ministry of Science and Higher Education of the Russian Federation (075-15-2022-315) for the organization and development of a World-class research center "Photonics".
Fig. 1. Compact fluorescence (a) and eye-safe (b) LIDAR systems developed at Prokhorov General Physics Institute of RAS. Compact LIDAR installed at a small drone (c). Raman LIDAR (d) developed for fresh and seawater monitoring (e).
[1] S.V. Gudkov, et al, Modern physical methods and technologies in agriculture, Uspekhi Fizicheskikh Nauk, Vol. 194, № 2, 208-226 (2024).
[2] M.Ya. Grishin, et al, Ultracompact Fluorescence Lidar Based on a Diode Laser (405 nm, 150 mW) for Remote Sensing of Waterbodies and the Underlying Surface from Unmanned Aerial Vehicles, Doklady Physics, Vol. 66, № 6, (2021).
