Full phase and amplitude control in computer-generated holography

被引：9
|
作者：
Fratz, Markus [1 ,2 ]
Fischer, Peer [2 ]
Giel, Dominik M. [1 ]
机构：
[1] Fraunhofer Inst Phys Measurement Tech IPM, D-79110 Freiburg, Germany
[2] Harvard Univ, Rowland Inst Harvard, Cambridge, MA 02142 USA
来源：
OPTICS LETTERS | 2009年 / 34卷 / 23期
关键词：
SPATIAL LIGHT MODULATORS; BEAM;
D O I：
10.1364/OL.34.003659
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report what we believe to be the first realization of a computer-generated complex-valued hologram recorded in a single film of photoactive polymer. Complex-valued holograms give rise to a diffracted optical field with control over its amplitude and phase. The holograms are generated by a one-step direct laser writing process in which a spatial light modulator (SLM) is imaged onto a polymer film. Temporal modulation of the SLM during exposure controls both the strength of the induced birefringence and the orientation of the fast axis. We demonstrate that complex holograms can be used to impart arbitrary amplitude and phase profiles onto a beam and thereby open new possibilities in the control of optical beams. (C) 2009 Optical Society of America
引用
收藏
页码：3659 / 3661
页数：3
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