Bacteriorhodopsin modules for data processing with incoherent light.
Bacteriorhodopsin modules for data processing with incoherent light.
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DOI：
10.1364/ol.27.001607
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发表时间：
2002-09
期刊：
影响因子：
3.6
通讯作者：
T. Juchem;M. Sanio;N. Hampp
中科院分区：
文献类型：
--
作者：
T. Juchem;M. Sanio;N. Hampp
利用生物光致变色菌紫质（BR）薄膜的光诱导各向异性，实现了BR薄膜的非相干光学处理。BR具有两个光谱分离良好的态，B和M，这两个态都显示出高度的光学各向异性。而对于绿色和蓝色光，BR分子可以在两种状态之间切换，折射率的伴随变化可以通过红色波长非破坏性地读出，例如，波长676nm。由于CCD阵列对这些波长的灵敏度非常高，因此即使是低功率光源也足以进行检测。我们描述了一个基于BR的非相干光数据处理异或计算模块。
Incoherent optical processing with films made from the biological photochrome bacteriorhodopsin (BR) is accomplished by use of the photoinducible anisotropy of polymeric BR films. BR has two spectrally well separated states, B and M, both of which show a high degree of optical anisotropy. Whereas with green and blue light the BR molecule can be switched between the two states, the accompanying changes in the refractive index may be nondestructively read out by wavelengths in the red, e.g., at 676nm. As the sensitivity of CCD arrays is quite high for such wavelengths, even low-power light sources are sufficient for detection. We describe a BR-based XOR computing module for incoherent optical data processing.