Phase-shifting shearing interferometry with a variable polarization grating recorded on Bacteriorhodopsin
Phase-shifting shearing interferometry with a variable polarization grating recorded on Bacteriorhodopsin
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DOI：
10.1016/j.optcom.2004.07.041
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发表时间：
2004-11
影响因子：
2.4
通讯作者：
E. Garbusi;E. Frins;J. Ferrari
中科院分区：
文献类型：
--
作者：
E. Garbusi;E. Frins;J. Ferrari
基于细菌视紫红质的波长相关偏振记录特性，提出了一种新型的横向剪切干涉仪。其关键是利用外部绿色激光束的叠加，通过电光器件调制其相对相位，在细菌视紫红质上投影出偏振光栅。因此，相移可以在剪切干涉仪内部没有移动部件的情况下被控制，这有助于系统的机械稳定性。剪切的量和方向也可以通过绿色激光束进行外部控制。
We describe a novel lateral shearing interferometer based on the wavelength dependent polarization recording properties of the Bacteriorhodopsin. The key point is to project a polarization grating on the Bacteriorhodopsin utilizing the superposition of external green laser beams whose relative phase is modulated by means of an electrooptic device. Thus, the phase-shifting can be controlled without moving parts inside the shearing interferometer, which contributes to the mechanical stability of the system. Amount and direction of the shear can be also externally controlled with the green laser beams.