Invention Grant
US07973989B2 System and method using a voltage kick-off to record a hologram on a photorefractive polymer for 3D holographic display and other applications
有权
使用电压启动在3D折射聚合物上记录全息图以进行3D全息显示和其它应用的系统和方法
- Patent Title: System and method using a voltage kick-off to record a hologram on a photorefractive polymer for 3D holographic display and other applications
- Patent Title (中): 使用电压启动在3D折射聚合物上记录全息图以进行3D全息显示和其它应用的系统和方法
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Application No.: US12185087Application Date: 2008-08-02
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Publication No.: US07973989B2Publication Date: 2011-07-05
- Inventor: Nasser N. Peyghambarian , Robert A. Norwood , Pierre-Alexandre Jean Blanche , Savas Tay
- Applicant: Nasser N. Peyghambarian , Robert A. Norwood , Pierre-Alexandre Jean Blanche , Savas Tay
- Applicant Address: US AZ Tucson
- Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
- Current Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
- Current Assignee Address: US AZ Tucson
- Agent Eric A. Gifford
- Main IPC: G03H1/18
- IPC: G03H1/18 ; G03H1/02

Abstract:
An updateable system and method of recording a hologram on a media simultaneously reduces the writing time and increases persistence without sacrificing diffraction efficiency. A voltage kick-off technique controls the bias electric field applied to a photorefractive polymer media in conjunction with the application of the writing beams and dark decay. Essentially the voltage kick-off technique applies a high electric field above the optimal field while the writing beams are on and reduces the electric field when the writing beams are off during dark decay. The voltage kick-off technique produced two separate unexpected results. First, when the writing beams are turned off and the electric field is lowered the diffraction efficiency continues to increase until it reaches a maximum efficiency that is within a few percent of that achieved by writing at the optimal field until steady-state is achieved. Second, the decay time constant is much larger than expected producing a much longer persistence without sacrificing diffraction efficiency or writing time.
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