A setup for remote recording of the spectrum of laser-induced fluorescence from crowns of woody plants

Abstract

A setup intended for remote studies of the chlorophyll content in woody plants is described. Fluorescence spectra from an object under study excited by laser radiation at a wavelength of 532 nm are recorded in the spectral range 600–850 nm. The performance characteristics of the setup allow acquisition of the spectra of short-term fluorescence of nanosecond duration, which are normalized to the maximum value of the signal of the reference channel. An MДP-23 monochromator is used as an element of spectral selection. Examples of recording a return pulse and the fluorescence spectrum from a Scotch pine are presented.