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    75.
    发明专利
    未知

    公开(公告)号：DE69332322D1

    公开(公告)日：2002-10-31

    申请号：DE69332322

    申请日：1993-04-21

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： AOSHIMA SHINICHIRO ,  HIRANO ISUKE

    IPC: G02F1/29 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/101 ,  H01S3/108 ,  H04B10/16 ,  G02F1/01

    Abstract: Input light incident into fiber end is separated by a light separator. Light traveling straight through the light separator is guided through an optical fiber to a light amplifying and deflecting section, where only components with deflection angle in a predetermined range are amplified and deflected then to be extracted. The extracted components are output as output light through an optical fiber. The other part of light separated by the light separator is received by a photo detector. The light received by the photo detector is converted into an electric signal, and the electric signal is then input into the light amplifying and deflecting section. Using the electric signal generated from the photo detector, desired wave shaping may be effected by adjusting a light amplification factor of the light amplifying and deflecting section, a change speed of deflection angle, and/or a range of deflection angle selected.

    Apparatus for producing radioisotope
    76.
    发明专利
    Apparatus for producing radioisotope 未知

    公开(公告)号：AU6596400A

    公开(公告)日：2001-03-19

    申请号：AU6596400

    申请日：2000-08-18

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： FUJIMOTO MASATOSHI ,  AOSHIMA SHINICHIRO ,  HOSODA MAKOTO

    IPC: G21G1/02 ,  G21G1/12 ,  G21G4/08

    Abstract: A radioisotope generating apparatus according to the present invention comprises a nuclear reaction section (30) an interior of which is retained in a vacuum; a source supply section (20) for supplying a source material R consisting of a nuclide necessary for generation of the radioisotope, to the nuclear reaction section; an optical system (10) for emitting pulse laser light toward the source material R supplied into the nuclear reaction section (30) and thereby brought into a dispersed state, thereby inducing a nuclear reaction in the source material R to generate the radioisotope; a product nucleus collecting section (40) for collecting a molecule PI having a nucleus of the radioisotope generated in the nuclear reaction section; and a radiation shielding system (50) for preventing outside leakage of radiations generated in the nuclear reaction section(30). This permits the position of a reaction field of the nuclear reaction to be fixed in a specific small region inside the nuclear reaction section, whereby the space necessary for the nuclear reaction section can be largely decreased.

    77.
    发明专利
    未知

    公开(公告)号：DE69328525T2

    公开(公告)日：2000-09-21

    申请号：DE69328525

    申请日：1993-08-27

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： TAKAHASHI HIRONORI ,  URAKAMI TSUNEYUKI ,  AOSHIMA SHINICHIRO ,  HIRANO ISUKE

    IPC: G01R15/24 ,  G01R1/07 ,  G01R19/00 ,  G01R31/302 ,  G01R31/319 ,  G01R31/308

    Abstract: A change in voltage can be sensitively detected at a local part of a measured object. A set of laser medium and E-O probe are disposed between a pair of mirrors, a first one and a second one, forming a laser resonator. A linearly polarized light is emitted from the laser medium. The polarized light enters the E-O probe, and returns after being reflected by the second mirror. When a voltage is given to the E-O probe from the measured object, depending on the voltage, a refractive index of the E-O probe is changed, the light emitted from the E-O probe is ovally polarized, and a resonance status of the laser resonator then varies. Therefore, the light intensity emitted through the partially penetrating first mirror to the outside of the laser resonator corresponds to the voltage at the measured object in the proximity of the E-O probe. Consequently, a voltage distribution on the measured object such as IC with fine structures can be two-dimensionally detected.

    78.
    发明专利
    未知

    公开(公告)号：DE69317923D1

    公开(公告)日：1998-05-20

    申请号：DE69317923

    申请日：1993-02-09

    Applicant: HAMAMATSU PHOTONICS KK

    Inventor： AOSHIMA SHINICHIRO ,  ITO HARUYASU

    IPC: H01S5/06 ,  H01S3/082 ,  H01S3/105

    Abstract: To provide a wavelength tunable laser device having a wavelength variable range of a broad band, and capable of simply changing the output wavelength. Excitation means 1 excites a laser medium 2a in a main resonator 2. The main resonator 2 is provided with two resonator mirrors 2b and an optical input/output port 2c in addition to the laser medium 2a. By the excitation means 1 and the main resonator 2, laser oscillation can be produced. A sub-resonator 3 is provided with wavelength selection means 3a and optical feedback means 3b. And, the sub-resonater selects a desired wavelength of the laser beam outputted from said main resonator and returns the laser beam of the desired wavelength back to said laser medium. In a device comprising the excitation means 1, the main resonator 2 and the sub-resonator 3, an optical output port 4 is provided. Since this wavelength tunable laser device has no necessity of providing wavelength selection means within the main resonator, laser oscillation is easily produced. Accordingly, even in the case where the gain of the laser medium is small, or the excitation energy is small, oscillation can be produced. In addition, since the main resonator can be placed in an oscillating state at all times, the wavelength tunable laser device can be prevented from being stopped.

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