POLARISATION ROTATOR WITH SMALL INDUCED ELLIPTICITY

The invention relates to a polarisation rotator with small polarisation ellipticity. The rotator includes a first optical unit (401) and a second optical unit (402) on a common optical axis. The first optical unit (401) is formed by a rectilinear polariser (205) and a first quarter-wave plate (210),...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ROSSINI UMBERTO, MORALES SOPHIE, LE CALVEZ STEPHANIE, FAVIER MAXIME
Format:	Patent
Sprache:	eng
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 ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The invention relates to a polarisation rotator with small polarisation ellipticity. The rotator includes a first optical unit (401) and a second optical unit (402) on a common optical axis. The first optical unit (401) is formed by a rectilinear polariser (205) and a first quarter-wave plate (210), where the polarisation direction of the polariser is a bisector of the neutral axes of the quarter-wave plate. The second optical unit (402) is formed by a variable-delay plate (220) and a second quarter-wave plate (230), where the neutral axes of the second quarter-wave plate are bisectors of the neutral variable-delay plate axes.