Low-noise optical wave amplifier

The signal wave (Fs) to be amplified interferes with a pump wave (Fp) in a non-linear medium (1) such as a photorefractive crystal. In order to reduce the noise considerably, or even to eliminate it, the noise-generating interference is therefore prevented from being established by moving the non-li...

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Bibliographische Detailangaben
Hauptverfasser:	RAJBENBACH, HENRI, HUIGNARD, JEAN-PIERRE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The signal wave (Fs) to be amplified interferes with a pump wave (Fp) in a non-linear medium (1) such as a photorefractive crystal. In order to reduce the noise considerably, or even to eliminate it, the noise-generating interference is therefore prevented from being established by moving the non-linear medium by rotation about an axis O. APPLICATIONS: Wave-front detection and coherent amplification device.