Coherent light generators – Particular active media – Semiconductor
Patent
1991-03-05
1992-12-15
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
357 30, 385 11, 385130, 257431, H01S 319, G02B 610
Patent
active
051723859
ABSTRACT:
Certain crystalline organic semiconductor compounds, such as 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA), when deposited by an ultrahigh vacuum process of organic molecular beam deposition, form highly ordered "quasi-epitaxial" films (32). Due to asymmetries in the molecular crystal structure of such compounds, the ordering of the films results in giant asymmetries in their dielectric properties. Such large dielectric asymmetries permit the construction of a variety of devices, including optical isolators (38), optically isolated lasers (48), optical isolated optical amplifiers (64), polarization-selective photodiodes (76), and metal-organic-inorganic semiconductor-metal detectors, among others.
REFERENCES:
patent: 4869569 (1989-09-01), Kapon
patent: 4975918 (1990-12-01), Morton
patent: 5058971 (1991-10-01), Schmitt et al.
patent: 5101469 (1992-03-01), Oda
Forrest Stephen R.
So Franky F.
Zang De Y.
Davie James W.
University of Southern California
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