Optical information reproduction by irradiating two laser beams

Details Optical information reproduction by irradiating two laser beams Optical information reproduction by irradiating two laser beams

1996-09-13

1998-05-19

Swann, Tod R.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369272, 369288, G11B 700, G01N 100

Patent

active

057545111

ABSTRACT:
There is provided an optical detection method comprising the steps of preparing a solid body having an energy level structure constituted by at least three energy levels, and irradiating first and second coherent light on the solid body to optically detect the physical structure of the solid body, wherein the detection step satisfies the following conditions:

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patent: 5268862 (1993-12-01), Rentzepis
patent: 5499206 (1996-03-01), Muto
M. Orrit et al., Single Pentacene Molecules Detected by Fluorescence Excitation in a p-Terphenyl Crystal, Physical Review Letters, pp. 2716-2719, Nov. 1990.
Physical Review A, vol. 51, No. 2, pp. 1438-1445, Feb. 1995, C. Wei, et al., "Experimental Investigations of Absorption and Dispersion Profiles of a Strongly Driven Transition: V-Shaped Three-Level System with a Strong Probe".
Physical Review A, vol. 49, No. 5, pp. 4016-4023, May 1994, Y. Zhu, et al., "Intensity Characteristics of Inversionless Lasers from Induced Atomic Coherence".
Optics Letters, vol. 19, No. 21, pp. 1744-1746, Nov. 1, 1994, A. Imamoglu, et al., "Semiconductor Lasers without Population Inversion".

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