| 摘要 |
The present invention relates to an optical manipulation system ( 10 ) for generation of a plurality of optical traps for manipulation of micro-objects including nano-objects using electromagnetic radiation forces in a micro-object manipulation volume ( 14 ), the system comprising a spatially modulated light source ( 16 ) for emission of a first light beam ( 24 ) with a spatially an adjustable spatial light modulator ( 26 ) for generating a second ( 28 ) and a third ( 30 ) modulated light beam, the second intensity modulated light beam propagating towards a first deflector ( 32 ) for deflection of the second light beam towards the micro-object manipulation volume ( 14 ), and the third intensity modulated light beam propagating towards a second deflector ( 34 ) for deflection of the third light beam towards the same volume ( 14 ). In one embodiment the optical manipulation system provides sets of beams propagating along substantially the same axis of propagation but in opposite directions, so-called counter-propagating beams, thereby forming a significant trapping force along the propagation axis of the beams for trapping of a micro-object.
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