Angle multiplexing

Keywords Angle multiplexing Azobenzene Diblock copolymers Holographic data storage Molecular glasses Phase gratings Surface relief gratings... 

Materials suitable for angle multiplexing in holographic data storage have to fulfill a number of properties ... 

Fig. 43 Eighty angle-multiplexed holograms each written with a fluence of 5 Jem 2. Sequences of four holograms were inscribed and every fifth was omitted. (Adapted with permission from [67]. Copyright Wiley-VCH Verlag GmbH Co. KGaA)...

Fig. 10. Configuration of crystal angle multiplexing combined with peristrophic rotation. Peristrophic multiplexing and crystal angle multiplexing are performed by rotating the crystal around the z-axis and an axis inclined at 2 from the y-axis, respectively.

Crystal angle multiplexing with peristrophic rotation... 

Although Vkim and Vkg are generally different in different multiplexing methods, we wiU consider here the crystal angle multiplexing combined with the peristrophic rotation discussed in Section 3.4. Furthermore, for simplicity, we assume = 0° in this section. First, let us consider Vkg after the crystal angle multiplexing around the axis inclined at The matrix that rotates at around the z-axis, and subsequently rotates at around the i -axis, is expressed as... 

Next, let us consider this in combination with peristrophic multiplexing. In this case, crystal angle multiplexing is performed at each inclined angle 4>czni that is. 

---