Adiabatic three-wave volume hologram: large efficiency independent of grating strength and polarization.
Adiabatic three-wave volume hologram: large efficiency independent of grating strength and polarization.
复制标题
绝热三波体全息图：效率高，与光栅强度和偏振无关。
作者：
C. Tsai;L. Glebov;B. Zeldovich
具有两个体光栅的透射全息图被认为是在波 A 通过中间弱激发波 C 衍射成波 B 的区域中。与非线性光学中受激拉曼绝热通道的现象类似，这种新方案展示了衍射效率，并且对全息图强度的敏感性较低。已经发展并分析探索了三波绝热耦合理论。数值结果显示了一个耦合轮廓的示例，该耦合轮廓保持高衍射效率，几乎不依赖于全息图的强度，包括抑制偏振的影响。
A transmission hologram with two volume gratings is considered in the regime of wave A diffracted into wave B via an intermediate weakly excited wave C. In analogy to the phenomenon of stimulated Raman adiabatic passage in nonlinear optics, this new scheme demonstrates diffraction efficiency with low sensitivity to the hologram's strength. A theory of three-wave adiabatic coupling has been developed and explored analytically. Numerical results show an example of a coupling profile that preserves high diffraction efficiency with almost no dependence on the hologram's strength, including the suppressed influence of polarization.