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公开(公告)号：WO1987007447A1
公开(公告)日：1987-12-03
申请号：PCT/US1987000955
申请日：1987-05-01
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： HUGHES AIRCRAFT COMPANY , POLLACK, Slava, A. , CHANG, David, B.
IPC: H01S03/16
CPC classification number: H01S3/11 , H01S3/08072 , H01S3/094038 , H01S3/094092 , H01S3/1608 , H01S3/1611 , H01S3/165 , H01S3/17
Abstract: A laser incorporating a laser medium disposed within a laser cavity and a pumping arrangement for selectively applying excitation energy to said laser medium. The laser medium contains upconverting material of the type which allows for the exchange of energy between electrons of the lasing ions at a given energy state below the meta-stable initial lasing state so that some of said exchanging electrons are upconverted to energy states at or above the meta-stable initial lasing state. The pumping arrangement applied energy of suitable wavelength and intensity for elevating electrons from energy levels below the given state to that state in sufficient numbers to support substantial upconversion and the resulting lasing.
Abstract translation: 一种激光器，其包括设置在激光腔内的激光介质和用于选择性地向所述激光介质施加激发能量的泵送装置。 激光介质包含上变频材料，其类型允许在低于等稳定的初始激光状态的给定能量状态下使激光离子的电子之间的能量交换，使得一些所述交换电子被上转换成等于或高于 元稳定的初始激光状态。 泵浦装置施加适当波长和强度的能量，以将电子从低于给定状态的能级提升到足够数量的电压，以支持实质的上变频和所产生的激光。
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公开(公告)号：WO1988001373A1
公开(公告)日：1988-02-25
申请号：PCT/US1987001502
申请日：1987-06-29
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： HUGHES AIRCRAFT COMPANY , POLLACK, Slava, A. , SHIH, I-FU , TZENG, Robert
IPC: G01M11/00
CPC classification number: G01M11/33 , G01J1/4257
Abstract: Apparatus for measuring the numerical aperture of an optical fiber in the infrared region. The optical fiber (8) is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber (8). At a predetermined distance from the end of the optical fiber, a conversion screen (10) can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.
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公开(公告)号：WO1991013302A1
公开(公告)日：1991-09-05
申请号：PCT/US1991000872
申请日：1991-02-11
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： HUGHES AIRCRAFT COMPANY , CHANG, David, B. , DRUMMOND, James, E. , POLLACK, Slava, A. , SHIH, I-Fu
IPC: F26B03/28
Abstract: An improved curing oven is disclosed. The present invention (10) provides an improved curing oven which cures materials with electromagnetic radiation in the ultraviolet region. The invention consists of a surface (12) lined with a layer of material (14) effective to radiate ultraviolet radiation in response to the application of infrared radiation. In a specific illustrative implementation, the invention (10) includes a second surface (18) overlying the first surface (12) providing a passageway therebetween. The oven temperature is set and maintained by a conventional temperature controller (20). Tne temperature controller (20) measures the oven temperature and controls a valve (22) which adjusts the gas pressure from a gas supply (24) to a set of oven burners (26). Air is supplied through inlet ports (28) included in the second surface (18).
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公开(公告)号：WO1987007448A2
公开(公告)日：1987-12-03
申请号：PCT/US1987000957
申请日：1987-05-01
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： HUGHES AIRCRAFT COMPANY , POLLACK, Slava, A. , CHANG, David, B.
IPC: H01S03/16
CPC classification number: H01S3/093 , H01S3/1608 , H01S3/1645
Abstract: The method of producing at least quasi-continuous lasing operation between initial and terminal lasing states comprising the steps of selecting a laser medium and cavity configuration (lasing frequency) with the laser medium containing upconverting material which provides for the exchange of energy between sufficient number of electrons at the terminal lasing state (manifold) so as to maintain population inversion between the initial and terminal lasing states during the lasing operation; and applying excitation energy of a suitable amount to the laser medium during at least a quasi-continuous time period.
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公开(公告)号：EP0278956B1
公开(公告)日：1991-05-22
申请号：EP87904597.9
申请日：1987-06-29
Applicant: Hughes Aircraft Company
Inventor： POLLACK, Slava, A. , SHIH, I-FU , TZENG, Robert
CPC classification number: G01M11/33 , G01J1/4257
Abstract: Apparatus for measuring the numerical aperture of an optical fiber in the infrared region. The optical fiber (8) is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber (8). At a predetermined distance from the end of the optical fiber, a conversion screen (10) can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.
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Patent Agency Ranking
公开(公告)号：EP0278956A1
公开(公告)日：1988-08-24
申请号：EP87904597.0
申请日：1987-06-29
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： POLLACK, Slava, A. , SHIH, I-FU , TZENG, Robert
CPC classification number: G01M11/33 , G01J1/4257
Abstract: Appareil pour mesurer l'ouverture numérique d'une fibre optique dans la région infrarouge. La fibre optique est montée de manière appropriée conformément aux normes d'essai classiques. On transmet de l'énergie infrarouge à travers les fibres optiques. A une distance prédéterminée de l'extrémité de la fibre optique, on peut disposer un écran de conversion pour transformer l'énergie infrarouge émise en une énergie de longueur d'onde inférieure. On peut enregistrer la distribution d'énergie à l'aide d'un détecteur compatible avec l'énergie de longueur d'onde inférieure, l'ouverture numérique pouvant être calculée à partir des données enregistrées.
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公开(公告)号：EP0267942A1
公开(公告)日：1988-05-25
申请号：EP87903522.0
申请日：1987-05-01
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： POLLACK, Slava, A. , CHANG, David, B.
IPC: H01S3
CPC classification number: H01S3/11 , H01S3/08072 , H01S3/094038 , H01S3/094092 , H01S3/1608 , H01S3/1611 , H01S3/165 , H01S3/17
Abstract: Le laser décrit comprend un milieu laser disposé dans une cavité à laser et un agencement de pompage pour appliquer sélectivement une énergie excitatrice au milieu laser. Le milieu laser contient un matériau de conversion incrémentielle du type permettant l'échange d'énergie entre des électrons des ions à effet laser à un état d'énergie donné inférieur à l'état laser initial métastable de sorte que certains des électrons d'échange sont convertis de manière incrémentielle à des états d'énergie égaux ou supérieurs à l'état laser initial métastable. L'agencement de pompage applique un énergie de longueur d'onde et d'intensité appropriées pour élever des électrons depuis des niveaux d'énergie inférieurs à l'état donné jusqu'à cet état en question en nombres suffisants pour supporter une conversion incrémentielle substantielle ainsi que l'effet laser résultant.
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公开(公告)号：EP0268670B1
公开(公告)日：1992-08-12
申请号：EP87904335.4
申请日：1987-05-01
Applicant: Hughes Aircraft Company
Inventor： POLLACK, Slava, A. , CHANG, David, B.
IPC: H01S3/16
CPC classification number: H01S3/093 , H01S3/1608 , H01S3/1645
Abstract: The method of producing at least quasi-continuous lasing operation between initial and terminal lasing states comprising the steps of selecting a laser medium and cavity configuration (lasing frequency) with the laser medium containing upconverting material which provides for the exchange of energy between sufficient number of electrons at the terminal lasing state (manifold) so as to maintain population inversion between the initial and terminal lasing states during the lasing operation; and applying excitation energy of a suitable amount to the laser medium during at least a quasi-continuous time period.
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公开(公告)号：EP0267942B1
公开(公告)日：1992-08-12
申请号：EP87903522.8
申请日：1987-05-01
Applicant: Hughes Aircraft Company
Inventor： POLLACK, Slava, A. , CHANG, David, B.
CPC classification number: H01S3/11 , H01S3/08072 , H01S3/094038 , H01S3/094092 , H01S3/1608 , H01S3/1611 , H01S3/165 , H01S3/17
Abstract: A laser incorporating a laser medium disposed within a laser cavity and a pumping arrangement for selectively applying excitation energy to said laser medium. The laser medium contains upconverting material of the type which allows for the exchange of energy between electrons of the lasing ions at a given energy state below the meta-stable initial lasing state so that some of said exchanging electrons are upconverted to energy states at or above the meta-stable initial lasing state. The pumping arrangement applied energy of suitable wavelength and intensity for elevating electrons from energy levels below the given state to that state in sufficient numbers to support substantial upconversion and the resulting lasing.
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公开(公告)号：EP0268670A1
公开(公告)日：1988-06-01
申请号：EP87904335.0
申请日：1987-05-01
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： POLLACK, Slava, A. , CHANG, David, B.
IPC: H01S3
CPC classification number: H01S3/093 , H01S3/1608 , H01S3/1645
Abstract: Le procédé de mise en oeuvre d'une opération au laser au moins quasi continu entre des états de laser initial et terminal comprend les étapes de sélection d'un milieu laser et d'une configuration de cavité (fréquence du laser), le milieu laser contenant un matériau de conversion incrémentielle permettant l'échange d'énergie entre un nombre suffisant d'électrons au niveau de l'état laser terminal (connecteur) de manière à maintenir une inversion de population entre les états laser initial et terminal pendant l'opération au laser, et d'application d'une énergie excitatrice d'une intensité appropriée au milieu laser pendant au moins une période de temps quasi continue.
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