LASER ACTIVE OPTRONIC SYSTEM WITH IMPROVED DETECTIVITY

The system has an optical gain medium (241) which is an absorbent with the wavelength of emission laser (10) and pumped by optical pumping units (242). An optical switching device (24) has a control unit (243) for the units (242) permitting activation of the device in a passing mode in a temporal wi...

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Bibliographische Detailangaben
Hauptverfasser:	PAPUCHON, MICHEL, POCHOLLE, JEAN-PAUL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TESTING
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Beschreibung
Zusammenfassung:	The system has an optical gain medium (241) which is an absorbent with the wavelength of emission laser (10) and pumped by optical pumping units (242). An optical switching device (24) has a control unit (243) for the units (242) permitting activation of the device in a passing mode in a temporal window for a preset period. The device is activated at a preset instant after the start of transmission of illumination laser beam.