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    Super-radiant short pulse laser
    1.
    发明授权
    Super-radiant short pulse laser 失效
    超辐射短脉冲激光

    公开(公告)号：US3657554A

    公开(公告)日：1972-04-18

    申请号：US3657554D

    申请日：1969-06-30

    Applicant: IBM

    Inventor： LUMPKIN OSCAR J ,  SHIREN NORMAN S

    IPC: H01S3/11 ,  H01S3/23 ,  H01S3/30 ,  H03F7/00

    CPC classification number: H01S3/307

    Abstract: Short intense lasing pulses of resonant radiation, of the order of 10 13 sec., are produced by employing adiabatic rapid passage of an optical transition of an optically resonant medium, such as K-vapor. The adiabatic rapid passage is achieved in the K-vapor by frequency modulating each pulse of a ruby laser giant pulse source. The modulated pulses are then passed through a fluoronitrobenzene Raman cell to provide an output pulse which has the required power and whose instantaneous carrier frequency sweeps through a resonance having a pair of levels connected by electric dipole transitions in the K-vapor system.

    Abstract translation: 共振辐射的短激光激光脉冲，大约为10〜13秒，是通过光学谐振介质如K-蒸汽的光学转变的绝热快速通过产生的。 通过对红宝石激光巨脉冲源的每个脉冲进行频率调制，在K蒸气中实现绝热快速通道。 然后将调制的脉冲通过氟 - 硝基苯拉曼电池，以提供具有所需功率的输出脉冲，并且其瞬时载波频率扫过具有通过K-蒸气系统中的电偶极子跃迁连接的一对电平的谐振。

    Memory system
    2.
    发明授权
    Memory system 失效
    内存系统

    公开(公告)号：US3919700A

    公开(公告)日：1975-11-11

    申请号：US49052774

    申请日：1974-07-22

    Applicant: IBM

    Inventor： COZZO JOSEPH ,  GARROD DAVID K ,  KAZYAKA THOMAS G ,  MELCHER ROBERT L ,  SHIREN NORMAN S

    IPC: G11C11/42 ,  G11C13/04 ,  H01L41/00 ,  H03K3/45

    CPC classification number: H03K3/45 ,  G11C11/42 ,  G11C13/042 ,  H01L41/00

    Abstract: Piezoelectric photosensitive semiconductor crystals or semiinsulators are employed either to store or to process high frequency signals. Storage is accomplished in the crystal by a stable pattern of trapped electrons produced by the interference between two radio-frequency input signal pulses. The latter are applied successively to the crystal, after an initial illumination, causing ultrasonic waves to be generated. The ultrasonic wave of the first pulse, together with the electric field of the second, cause the trapped electrons to be redistributed in a pattern which has the same spatial variation as the ultrasonic wave. In effect, the information contained in the original pulse is stored in the crystal, the latter serving as a recording medium operating over the whole radio frequency range.

    Abstract translation: 压电光敏半导体晶体或半绝缘体用于存储或处理高频信号。 通过由两个射频输入信号脉冲之间的干扰产生的捕获电子的稳定图案在晶体中实现存储。 后者在初始照射之后连续施加到晶体，导致产生超声波。 第一脉冲的超声波与第二脉冲的超声波一起导致被俘获的电子以与超声波相同的空间变化的图案重新分布。 实际上，包含在原始脉冲中的信息被存储在晶体中，后者用作在整个射频范围内工作的记录介质。

    4.
    发明专利
    未知

    公开(公告)号：DE2531783A1

    公开(公告)日：1976-02-19

    申请号：DE2531783

    申请日：1975-07-16

    Applicant: IBM

    Inventor： COZZO JOSEPH ,  GARROD DAVID K ,  KAZYAKA THOMAS G ,  MELCHER ROBERT L ,  SHIREN NORMAN S

    IPC: G11C11/42 ,  G11C13/04 ,  H01L41/00 ,  H03K3/45 ,  H01L31/00 ,  G11C11/34

    Abstract: Piezoelectric photosensitive semiconductor crystals or semi-insulators are employed either to store or to process high frequency signals. Storage is accomplished in the crystal by a stable pattern of trapped electrons produced by the interference between two radio-frequency input signal pulses. The latter are applied successively to the crystal, after an initial illumination, causing ultrasonic waves to be generated. The ultrasonic wave of the first pulse, together with the electric field of the second, cause the trapped electrons to be redistributed in a pattern which has the same spatial variation as the ultrasonic wave. In effect, the information contained in the original pulse is stored in the crystal, the latter serving as a recording medium operating over the whole radio frequency range.

    OPTICAL SCANNING
    7.
    发明专利
    OPTICAL SCANNING 未知

    公开(公告)号：CA1072662A

    公开(公告)日：1980-02-26

    申请号：CA268647

    申请日：1976-12-23

    Applicant: IBM

    Inventor： MELCHER ROBERT L ,  SHIREN NORMAN S

    IPC: H01L27/146 ,  H01L31/00 ,  H01L41/08 ,  H04N3/10 ,  H04N5/30

    Abstract: OPTICAL SCANNER This disclosure provides an optical scanner for transforming an optical image into electrical signals. Through practice of this disclosure an optical image is projected onto a surface of a photosensitive semiconductor body wherein there is established a charge distribution or perturbation or pattern which reflects the variations in optical intensity of the optical image. Through the parametric interaction of simultaneously applied electric field and acoustic wave to each respective portion of the electrical charge pattern on the photosensitive semiconductor surface, there is obtained a backward acoustic wave which is directed toward the source of the initiating acoustic wave. In particular, the acoustic wave in the acoustic medium may be either a surface acoustic wave (SAW) or a bulk acoustic wave. Where the surface acoustic wave is utilized, the acoustic medium may be commensurately thin. The acoustic medium must be piezoelectric for it is the interaction of the electric field of the acoustic wave with the applied electric field via the charge pattern which achieves the parametric interaction. Through the "holographic" electric field echo effect, an optical scanner may be achieved for the practice of this disclosure by storage of a charge pattern related to the optical image.

    9.
    发明专利
    未知

    公开(公告)号：FR2280172A1

    公开(公告)日：1976-02-20

    申请号：FR7517192

    申请日：1975-05-27

    Applicant: IBM

    Inventor： COZZO JOSEPH ,  MELCHER ROBERT L ,  GARROD DAVID K ,  SHIREN NORMAN S ,  KAZYAKA THOMAS G

    IPC: G11C11/42 ,  G11C13/04 ,  H01L41/00 ,  H03K3/45 ,  G11C11/21 ,  G11C27/00 ,  H01L41/10 ,  H03H9/00

    Abstract: Piezoelectric photosensitive semiconductor crystals or semi-insulators are employed either to store or to process high frequency signals. Storage is accomplished in the crystal by a stable pattern of trapped electrons produced by the interference between two radio-frequency input signal pulses. The latter are applied successively to the crystal, after an initial illumination, causing ultrasonic waves to be generated. The ultrasonic wave of the first pulse, together with the electric field of the second, cause the trapped electrons to be redistributed in a pattern which has the same spatial variation as the ultrasonic wave. In effect, the information contained in the original pulse is stored in the crystal, the latter serving as a recording medium operating over the whole radio frequency range.

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