| 摘要 |
882,164. Electrical digital data-storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 2, 1960 [Aug. 25, 1959], No. 26706/60. Class 106 (1). In an electron spin echo storage system the echo pulse is detected by its effect on a beam of polarized light. The sample 3 is subjected to a magnetic field H o while located in a microwave resonant cavity and an information pulse is applied through port 2 in the cavity. A light beam polarized in the direction of arrow 9 is directed through ports 4 and the sample 3. The occurrence of an echo pulse results in rotations of the plane of polarization of the light which are passed by a filter 7 arranged to reject light polarized in the direction 9, and the resultant light pulse strikes a photo-multiplier 8, |
