Transverse geometry

Figure 3 MOKE geometries for light incident at an angie a with respect to the sample normal h polar geometry (a), longitudinal geometry (b), and transverse geometry (c).

There is no MOKE response for normally incident p- or j-light in either the longitudinal or transverse geometries. 

There is no MOKE response for pure j-light for any angle of incidence in the transverse geometry. 

There is no Kerr rotation or Kerr ellipticity for pure /flight or for mixed r- and p-light in the transverse geometry, but there is a magnetization induced change in the surface reflectivity. 

We have seen that a bulk transparent electro-optic crystal changes its index by a small amount, if an electric field is applied. Figure 4.9 shows a phase modulator for transverse geometry. Let us look at some numbers for LiNb03 d = 1 mm, L = 10 mm, r33 = 30.9 pm/V, ne = 2.2, U = 180 V, and A0 = 0.6 ptm. We find... 

Figure 4.9 Schematic of bulk electro-optic phase modulator in transverse geometry (a) standard electrode arrangement for static measurements, (b) travelling wave configuration...

Using a laser operating on 14C1602, the regular band of which spans 12.0 pm, it is possible to perform the experiment with a transverse geometry with a fast ion beam, or with a slower ion beam, for example from an ECR ion source. A possible setup is outlined in fig. 6. Because of the shorter interaction time, a build-up... 

To reduce sensitivity to the Doppler shift further the experiment can be carried out using a transverse geometry on a fast beam, or on a slow beam, or... 

MO Kerr effects are used to observe the domain structure of opaque materials. If the magnetization vector is perpendicular to the sample plane, then the polar Kerr effect is utilized. If the magnetization lies in the sample plane, then structure images can be obtained either in the longitudinal geometry with polarizers or in the transverse geometry without polarizers. 

Also, tunneling data have been discussed in the framework of unconventional pairing, and theoretical models have also been rewritten. It is claimed that several features such as the zero-bias anomaly observed in transverse geometry are indications of j,2-wave symmetry of the order parameter (see sec. 6), while some of the latest investigations on YBa2Cu30j, show the admixture of s- and d-waves. 

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