Gray-scale image fidelity and enhancement in photorefractive volume memory recorded with a pulsed signal beam

Guoqiang Li; Feng Qian; Jianlang Li; Liren Liu

doi:10.1117/12.363941

20 September 1999 Gray-scale image fidelity and enhancement in photorefractive volume memory recorded with a pulsed signal beam

Guoqiang Li, Feng Qian, Jianlang Li, Liren Liu

Author Affiliations +

Proceedings Volume 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V; (1999) https://doi.org/10.1117/12.363941
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

We present, for the first time to our knowledge, a gray-level image recording method in photorefractive volume memory, in which the image to be recorded is illuminated periodically by a pulse while the reference beam interacts the medium continuously until the steady state is reached. By adjusting the duty cycle of the exposure of the image in recording, high fidelity can be maintained in image reconstruction for pixels of different gray-scale intensities. Furthermore, due to multiple beam coupling the weak input image can be greatly enhanced without the loss of fidelity.

Citation Download Citation

Guoqiang Li, Feng Qian, Jianlang Li, and Liren Liu "Gray-scale image fidelity and enhancement in photorefractive volume memory recorded with a pulsed signal beam", Proc. SPIE 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V, (20 September 1999); https://doi.org/10.1117/12.363941

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