US5253258A
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Optically encoded phase matched second harmonic generation device and self frequency doubling laser material using semiconductor microcrystallite doped glasses
Assignee: INTELLECTUAL PROPERTY DEVELOPMENT ASSOCIATES OF CONNECTICUT Inc
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Filing: 1991-10-17
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Granted: 1993-10-12
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Expires: 2011-10-17
Abstract
Abstract There is described a semiconductor microcrystallite doped glass that exhibits SHG, and a method of preparing, or encoding, a semiconductor microcrystallite doped glass by the simultaneous injection of fundamental and second harmonic fields, such as 1.06 μm and 532 nm. More specifically, the disclosure pertains to a structure that exhibits SHG, the structure being comprised of, by example, borosilicate glass that contains CdS x Se 1-x microcrystallites. Also disclosed are embodiments of devices having an optical waveguide structure formed within a glass substrate that contains semiconductor microcrystallites. The optical waveguide structure guides and contains injected radiation and also converts a portion thereof to the second harmonic. Also disclosed are optoelectronic devices that include frequency doublers, self-doubling lasant material, bichromatic optical switches, and a volume holographic medium, all of which include a glass host having semiconductor microcrystallites embedded within.
Inventors
- 👤 Nabil M. Lawandy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:08
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/004; G11B7/0065; C; C03; C03C; C03C14/00; C03C14/006; C03C23/00; C03C23/0005; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/3555; G02F1/365; G02F1/37; G02F1/377; G03; G03H; G03H1/00; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17; C03C2214/00; C03C2214/16; G02F1/29; G02F1/31; G02F1/313; G02F1/3132; G02F1/3515; G02F1/3517; G02F2201/00; G02F2201/30; G02F2201/307; G03H1/02; G03H2001/026; G03H2001/0268; H01S3/10; H01S3/106; H01S3/108; H01S3/109; H01S5/00; H01S5/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
82 words
A method of preparing a material so as to exhibit second harmonic generation for optical radiation incident on the material, comprising the steps of: providing a glass host having semiconductor microcrystallites contained within; and irradiating the glass host with radiation having a first wavelength and a second wavelength that is one-half of the first wavelength, the glass host being irradiated for a period of time sufficient to obtain a desired value of conversion efficiency of the first wavelength into the second wavelength.
Claim 2
Independent Claim
82 words
A method of preparing a material so as to exhibit second harmonic generation for optical radiation incident on the material, comprising the steps of: providing a glass host having semiconductor microcrystallites contained within; and irradiating the glass host with radiation having a first wavelength and a second wavelength that is one-half of the first wavelength, the glass host being irradiated for a period of time sufficient to obtain a desired value of conversion efficiency of the first wavelength into the second wavelength.
Claim 3
Dependent Claim
43 words
A method as set forth in claim 1 wherein the glass host is comprised of a silica-based glass and wherein the semiconductor microcrystallites are comprised of CdS x Se 1-x , wherein x has a value within a range of zero to one.
Claim 4
Dependent Claim
26 words
A method as set forth in claim 2 wherein the silica-based glass further includes a material selected from the group consisting of Na, K, and Nd.
Claim 5
Dependent Claim
36 words
A method as set forth in claim 1 wherein the first wavelength is within a range of approximately 2 μm to approximately 0.5 μm and wherein the second wavelength is one half of the first wavelength.
Claim 6
Dependent Claim
25 words
A method as set forth in claim 1 wherein the semiconductor microcrystallites have a density of approximately 0.3 mole percent to approximately 50 mole percent.
Claim 7
Dependent Claim
73 words
An optical device comprising: a source of optical radiation having a first wavelength; and means, optically coupled to an output of said source, for converting the output of said source to a second wavelength that is one-half of the first wavelength, said converting means including a glass host having semiconductor microcrystallites embedded within, said converting means having an internally generated periodic quasi-phase matched electric field that frequency doubles the output of the source.
Claim 8
Dependent Claim
73 words
An optical device comprising: a source of optical radiation having a first wavelength; and means, optically coupled to an output of said source, for converting the output of said source to a second wavelength that is one-half of the first wavelength, said converting means including a glass host having semiconductor microcrystallites embedded within, said converting means having an internally generated periodic quasi-phase matched electric field that frequency doubles the output of the source.
Claim 9
Dependent Claim
44 words
An optical device as set forth in claim 6 wherein the bulk glass is comprised of a silica-based glass and wherein the semiconductor microcrystallites are comprised of CdS x Se 1-x , wherein x has a value within a range of zero to one.
Claim 10
Dependent Claim
27 words
An optical device as set forth in claim 7 wherein the boroslilicate glass further includes a material selected from the group consisting of Na, K, and Nd.
Claim 11
Dependent Claim
37 words
An optical device as set forth in claim 6 wherein the first wavelength is within a range of approximately 2 μm to approximately 0.5 μm and wherein the second wavelength is one half of the first wavelength.
Claim 12
Dependent Claim
28 words
An optical device as set forth in claim 6 wherein the microcrystallites are selected from the group consisting essentially of CdSSe, GaAs, InP, ZnSe, CuCl, PbS, and ZnSeS.
Claim 13
Dependent Claim
17 words
An optical device as set forth in claim 6 wherein said source includes a semiconductor laser diode.
Claim 14
Dependent Claim
16 words
An optical device as set forth in claim 6 wherein said source includes a Nd:YAG laser.
Claim 15
Dependent Claim
18 words
An optical device as set forth in claim 6 wherein said converting means is deposited upon a substrate.
Claim 16
Dependent Claim
80 words
An optical device comprising a laser diode means having an output for providing radiation at a wavelength λ 1 , said optical device further including a frequency doubler means that is optically coupled to the output of said laser diode means, said frequency doubler means being comprised of a silica-based glass host having semiconductor microcrystallites embedded within, said frequency doubler means having an internally generated periodic quasi-phase matched electric field that frequency doubles the output of said laser diode means.
Claim 17
Dependent Claim
80 words
An optical device comprising a laser diode means having an output for providing radiation at a wavelength λ 1 , said optical device further including a frequency doubler means that is optically coupled to the output of said laser diode means, said frequency doubler means being comprised of a silica-based glass host having semiconductor microcrystallites embedded within, said frequency doubler means having an internally generated periodic quasi-phase matched electric field that frequency doubles the output of said laser diode means.
Claim 18
Dependent Claim
84 words
An optical device for frequency doubling optical radiation, said device including a glass substrate having semiconductor microcrystallites contained within, the glass substrate having a waveguide structure formed within at least one surface thereof for guiding radiation having a first wavelength and for converting a portion of the guided radiation to a second wavelength, wherein said glass substrate includes an internally generated periodic quasi-phase matched electric field that interacts with the guided radiation for converting the portion of the guided radiation to the second wavelength.
Claim 19
Dependent Claim
84 words
An optical device for frequency doubling optical radiation, said device including a glass substrate having semiconductor microcrystallites contained within, the glass substrate having a waveguide structure formed within at least one surface thereof for guiding radiation having a first wavelength and for converting a portion of the guided radiation to a second wavelength, wherein said glass substrate includes an internally generated periodic quasi-phase matched electric field that interacts with the guided radiation for converting the portion of the guided radiation to the second wavelength.
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