Remotely-interrogated high data rate free space laser...

Details Remotely-interrogated high data rate free space laser... Remotely-interrogated high data rate free space laser...

H - Electricity

04

B

H04B 10/00 (2006.01) H04B 10/10 (2006.01)

Patent

CA 2405274

A system and method of remotely extracting information from a communications station by interrogation with a low power beam. Nonlinear phase conjugation of the low power beam results in a high power encoded return beam that automatically tracks the input beam and is corrected for atmospheric distortion. Intracavity nondegenerate four wave mixing is used in a broad area semiconductor laser in the communications station to produce the return beam.

Cette invention a trait à un système et à la technique correspondante permettant d'extraire, à distance, une information d'une station de communications par une interrogation effectuée grâce à un faisceau de faible puissance. La conjonction de phase non linéaire du faisceau de faible puissance se traduit par l'existence d'un faisceau de retour codé à haute puissance qui poursuit automatiquement le faisceau en entrée et dont la distorsion atmosphérique est corrigée. On utilise le mélange non dégénéré à quatre ondes intracavitaire dans un laser à grande surface à semi-conducteur dans la station de communications afin de produire le faisceau de retour.

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