| 释义 |
Pockels|ˈpɒkəlz|
Also erron. Pockel.
The name of F. C. A. Pockels (1865–1913), German physicist, used, chiefly attrib., with reference to an effect in certain crystals similar to the Kerr effect (sense (b)) in liquids (see quot. 19752); so Pockels cell, Pockels constant, Pockels effect (cf. Kerr).
Described by Pockels 1894, in Abhandl. der K. Ges. der Wissensch. zu Göttingen (Math-phys. Klasse) XXXI. 204.
1949Jrnl. Optical Soc. Amer. XXXIX. 798/2 The constants tij are..related to Pockels' constants eij. 1957D. E. Gray Amer. Inst. Physics Handbk. vi. 96 Twenty⁓one of the 32 crystal symmetry classes do not contain centers of symmetry, and of these, 20 may exhibit the linear Pockels effect. 1968E. L. Steele Optical Lasers in Electronics v. 178 The electro-optical switches employ the photo-optical effect in a Kerr cell, Pockels cell, or Faraday rotator. 1975D. G. Fink Electronics Engineers' Handbk. xi. 24 Linear Electrooptical Effect, or Pockel's Effect. Crystalline materials such as potassium dihydrogen phosphate (KDP) and lithium niobate are used... Metal electrodes are applied to rectangular blocks of these crystals, and the resultant structures are referred to as Pockel cells. Ibid. xiv. 60 In the Pockels effect the differential phase shift is linearly related to applied voltage; in the Kerr effect it is related to the voltage squared. 1976Nature 22 Apr. 677/1 The emission intensities of the components parallel and perpendicular to the incident laser polarisation were determined using a Pockels cell to rotate the laser polarisation with respect to a fixed analyser. |