IMAGING APPARATUS AND METHODS

Methods, systems and apparatus for manipulating electromagnetic radiation such as laser beams include a first acousto-optic deflector optimised for efficient transmission at the input beam angle and a second acousto-optic deflector of lower peak efficiency than the first acousto-optic deflector but...

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Bibliographische Detailangaben
Hauptverfasser:	SILVER ROBIN ANGUS, KIRKBY PAUL ANTHONY, NADELLA K. M. NAGA SRINIVAS
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 INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TESTING
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Beschreibung
Zusammenfassung:	Methods, systems and apparatus for manipulating electromagnetic radiation such as laser beams include a first acousto-optic deflector optimised for efficient transmission at the input beam angle and a second acousto-optic deflector of lower peak efficiency than the first acousto-optic deflector but which accepts beams from a wider range of angles at better transmission efficiency than the first acousto-optic deflector by passing a beam optimised for efficient transmission through the first acousto-optic deflector at the input beam angle, deflecting the beam using the first acousto-optic deflector, passing the deflected beam through the second acousto-optic deflector, which has a lower peak efficiency than the first acousto-optic deflector and accepts beams from a wider range of angles at better transmission efficiency than the first acousto-optic deflector, and deflecting the beam using the second acousto-optic deflector.