DEVICE FOR THE PILOTAGE AND CONTROL OF A CONTINUOUSLY TUNABLE AND SPECTRALLY FINE LASER, AND APPLICATION TO AN OPTICAL RADAR FOR METEOROLOGICAL MEASUREMENTS.

摘要

The device comprises, in the resonant cavity 100b, 100b' of the laser 100, dispersive elements 101, 102, of which one 102 is more selective, driving units 111, 112 acting on each of the elements 101, 102 so as to govern their action, means of control 121, 122 operating on each of the units 111, 112, an optical analyser 200 for determining the number of spectral lines observed and for reacting on the means 122 so that a single spectral line is emitted, and an absolute measuring unit 300 for reacting on the means 121, 122 and for stopping the units 111, 112 when the chosen spectral line is obtained. Application to an optical radar system for a mobile weather station operating in DIAL mode. IMAGE