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公开(公告)号：DE69025564D1
公开(公告)日：1996-04-04
申请号：DE69025564
申请日：1990-12-07
Applicant: IBM
Inventor： FUKUZAWA TADASHI , KANO SATORU S , KUMATA KIYOSHI , LEE VICTOR Y , SCHELLENBERG FRANKLIN MARK , TAKAHASHI YUTAKA
Abstract: The invention relates to a nonlinear optical device comprising a film structure (2) coated on a substrate (1) without interposition of adhesive. According to the invention the device is characterised in that the film structure comprises a modulated intercalation structure consisting of a layer of semi-conductor material and a layer of organic material, the layers having different energy gaps and the modulated structure being a super lattice structure. The invention also relates to a method of manufacturing a nonlinear optical device comprising dissolving an organic material in a solvent, and spin coating the solution onto a substrate and thereby forming an organic material film with one of its crystal axes oriented in the direction normal to the substrate, the film having a modulated structure of the two types of layers alternately intercalated and differing in energy gap in the direction.
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公开(公告)号：DE69306333T2
公开(公告)日：1997-06-12
申请号：DE69306333
申请日：1993-07-29
Applicant: IBM
Inventor： OWA SOICHI , KUMATA KIYOSHI , KANO SATORU S
Abstract: This invention is intended to provide a nonlinear optical device with sufficiently high nonlinearity for efficient wavelength conversion or optical modulation. The nonlinear optical device according to this invention comprises a substrate and material layers disposed thereupon, at least a portion of said material layers being alternate insulator layers and semiconductor layers comprising a multi-quantum-well structure, the potential for electrons in said semiconductor layers being asymmetric in the z-direction normal to said substrate. A quantum well structure that uses an insulator layer as the barrier layer and a semiconductor layer as the well layer satisfies the requirements of a well depth of 3 eV or more, and of a difference between the minimum energy level (e1) of the electrons in the conduction band and the maximum energy level (h1) of the electrons in the valence band of 3 eV or more, whereby the device is transparent for visible light, including second harmonic generated blue light.
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公开(公告)号：DE69306333D1
公开(公告)日：1997-01-16
申请号：DE69306333
申请日：1993-07-29
Applicant: IBM
Inventor： OWA SOICHI , KUMATA KIYOSHI , KANO SATORU S
Abstract: This invention is intended to provide a nonlinear optical device with sufficiently high nonlinearity for efficient wavelength conversion or optical modulation. The nonlinear optical device according to this invention comprises a substrate and material layers disposed thereupon, at least a portion of said material layers being alternate insulator layers and semiconductor layers comprising a multi-quantum-well structure, the potential for electrons in said semiconductor layers being asymmetric in the z-direction normal to said substrate. A quantum well structure that uses an insulator layer as the barrier layer and a semiconductor layer as the well layer satisfies the requirements of a well depth of 3 eV or more, and of a difference between the minimum energy level (e1) of the electrons in the conduction band and the maximum energy level (h1) of the electrons in the valence band of 3 eV or more, whereby the device is transparent for visible light, including second harmonic generated blue light.
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公开(公告)号：DE69025564T2
公开(公告)日：1996-09-19
申请号：DE69025564
申请日：1990-12-07
Applicant: IBM
Inventor： FUKUZAWA TADASHI , KANO SATORU S , KUMATA KIYOSHI , LEE VICTOR Y , SCHELLENBERG FRANKLIN MARK , TAKAHASHI YUTAKA
Abstract: The invention relates to a nonlinear optical device comprising a film structure (2) coated on a substrate (1) without interposition of adhesive. According to the invention the device is characterised in that the film structure comprises a modulated intercalation structure consisting of a layer of semi-conductor material and a layer of organic material, the layers having different energy gaps and the modulated structure being a super lattice structure. The invention also relates to a method of manufacturing a nonlinear optical device comprising dissolving an organic material in a solvent, and spin coating the solution onto a substrate and thereby forming an organic material film with one of its crystal axes oriented in the direction normal to the substrate, the film having a modulated structure of the two types of layers alternately intercalated and differing in energy gap in the direction.
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