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1. 发明专利

JP2002107494A METHOD AND DEVICE FOR INDUCING NUCLEAR REACTION 失效
公开(公告)号：JP2002107494A
公开(公告)日：2002-04-10
申请号：JP2000295208
申请日：2000-09-27
申请人： CENTRAL RES INST ELECT , UNIV MICHIGAN
发明人： NEMOTO KOSHICHI , NAYUKI TAKUYA , ANATOLY MAXIMCHUK , VALERY YU BAISENKOFU , SUDEEP BANERJEE , SHAOTING GU , KIRK FLIPPO , GERALD MOUROU , DONALD AMUSHUTADDAA
IPC分类号： G21B1/00 , G21B3/00 , G21G4/00 , G21K1/00 , G21K5/04 , G21K5/08 , G21B1/02
摘要： PROBLEM TO BE SOLVED: To easily induce nuclear reaction. SOLUTION: A member to be irradiated is irradiated momentarily with a laser beam having an energy allowing ionization of an irradiation member (step S1) to generate particles of high energy (step S2), and a target material is irradiated with the high-energy particles (step S3) to induce nuclear reaction (step S4).

2. 发明专利

JPH10173275A WAVELENGTH-VARIABLE LASER DEVICE 失效
公开(公告)号：JPH10173275A
公开(公告)日：1998-06-26
申请号：JP33377996
申请日：1996-12-13
申请人： CENTRAL RES INST ELECT
发明人： FUJII TAKASHI , NAYUKI TAKUYA , NEMOTO KOSHICHI
IPC分类号： H01S3/137 , H01S3/1055
摘要： PROBLEM TO BE SOLVED: To provide a wavelength-variable laser device which is capable of outputting a laser beam whose frequency is high in accuracy and stability and which can be stably set at an optional frequency and moreover set variable in frequency as it gets locked at a stable frequency standard. SOLUTION: A wavelength-variable laser device is composed of, at least, a laser ray generating means 3, a light modulating device 5, and a frequency standard means 7. The laser ray generating means 3 generates frequency- variable laser rays in a single mode. The light modulating means modulates laser rays emitted from the laser ray generating means 3 with modulating frequency, whereby a carrier wave and side bands on its higher and lower frequency side are generated. Furthermore, the side bands on the higher frequency side and lower frequency side of the carrier wave are locked onto a frequency standard means 7. Modulation frequency added to the light modulating means 5 and the frequency of laser rays generated from the laser ray generating means 3 are controlled at the same time, whereby laser rays emitted from the laser ray generating means 3 can be controlled in frequency.

3. 发明专利

JP2002107499A METHOD OF GENERATING HIGH-ENERGY PARTICLES AND RADIOACTIVATION ANALYSIS METHOD USING THE SAME, HIGH- ENERGY PARTICLE GENERATOR, AND RADIOACTIVATION ANALYZER 失效
公开(公告)号：JP2002107499A
公开(公告)日：2002-04-10
申请号：JP2000295211
申请日：2000-09-27
申请人： CENTRAL RES INST ELECT
发明人： NEMOTO KOSHICHI , NAYUKI TAKUYA , OISHI SUKETSUGU
IPC分类号： G01N23/221 , G21K1/00 , G21K5/00 , G21K5/08
摘要： PROBLEM TO BE SOLVED: To downsize facility equipments, to reduce the cost, and to simplify the handling of a radioactivation analyzer. SOLUTION: This high-energy particle generator 11 is provided with a target 12, and a laser beam emitting means 15 for irradiating momentarily the target 12 with a laser beam 13 of energy allowing ionization of the target 12 by the momentary irradiation to generate the high-energy particle 14. This radioactivation analyzer is provided with the generator 11, and a measuring means 17 for measuring a change of a measured object 16 irradiated with the high-energy particle 14 generated by the generator 11.

4. 发明专利

JP2000123995A PLASMA DENSITY MEASURING DEVICE 失效
公开(公告)号：JP2000123995A
公开(公告)日：2000-04-28
申请号：JP29164598
申请日：1998-10-14
申请人： CENTRAL RES INST ELECT
发明人： FUKUCHI TETSUO , NEMOTO KOSHICHI , NAYUKI TAKUYA
IPC分类号： G01N21/41 , G01N21/45 , H05H1/00
摘要： PROBLEM TO BE SOLVED: To measure a plasma density by using an interferometer with a single optical path to measure the phase distribution of a laser light. SOLUTION: A plasma density measuring device includes a laser 1, a magnifying optical system 3 for magnifying a laser light 2 from the laser 1, a wave surface measurement part in which a laser light 12 magnified by the magnifying optical system 3 and transmitted through a plasma 8 to be measured is incident for detecting the phase distribution of the laser light 12, a CCD camera 10 for reading the phase distribution detected by the wave surface measurement part and an image processing part 11 for forming an image of the phase distribution in accordance with data read by the CCD camera 10.

5. 发明专利

JP2003262895A METHOD FOR SUM FREQUENCY GENERATION, METHOD FOR GENERATING VARIABLE WAVELENGTH LASER BEAM AND METHOD FOR DIFFERENCE ABSORPTION LASER RADAR MEASUREMENT USING THE SAME, SUM FREQUENCY GENERATION APPARATUS, AND VARIABLE WAVELENGTH LASER APPARATUS AND DIFFERENCE ABSORPTION LASER RADAR USING THE SAME 审中-公开
公开(公告)号：JP2003262895A
公开(公告)日：2003-09-19
申请号：JP2002065381
申请日：2002-03-11
申请人： CENTRAL RES INST ELECT
发明人： NAYUKI TAKUYA , FUKUCHI TETSUO , FUJII TAKASHI , NEMOTO KOSHICHI
IPC分类号： G01N21/39 , G01N21/49 , G02F1/37 , H01S3/109 , H01S3/16 , H01S3/213
摘要： PROBLEM TO BE SOLVED: To increase sum frequency output energy. SOLUTION: This method for sum frequency generation for obtaining sum frequency output 3ω by inputting two light beams ω and 2ω to nonlinear crystals 2 and 3 adds a nonlinear coefficient corresponding to a direction orthogonally crossing the polarization direction of the sum frequency output 3ω to an effective nonlinear coefficient corresponding to a direction parallel to the polarization direction of the sum frequency output 3ω, and arranges the nonlinear crystals 2 and 3 rotated by arranging angles α 1 and α 2 with respect to the polarization direction of the two light beams ω and 2ω so as to maximize the added result. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2002014061A APPARATUS AND METHOD FOR EVALUATING DEFECT 失效
公开(公告)号：JP2002014061A
公开(公告)日：2002-01-18
申请号：JP2000199503
申请日：2000-06-30
申请人： CENTRAL RES INST ELECT
发明人： NEMOTO KOSHICHI , NAYUKI TAKUYA , OISHI SUKETSUGU , ONUMA TOSHIHARU
IPC分类号： G01N23/22 , G21K5/02
摘要： PROBLEM TO BE SOLVED: To effectively defect and evaluate the state of an internal defect of a material to be measured such as a bulk material or the like even at a deep position from its surface. SOLUTION: When a defect 3 such as a lattice defect or the like in a material 2 to be measured is detected and evaluated by utilizing position annihilation for generating γ-rays from a positron as it annihilates, X-rays are radiated toward the material 2, and a pulse positron group is generated in the material 2. The positrons are generated in the material 2 by utilizing an electromagnetic wave, having a substance permeability instead of irradiating the surface of the material with positron, and hence the annihilation of the positron in the defect part can be made, irrespective of a depth of the defect 3 in the material 2 from its surface, and the defect is detected and evaluated by measuring timing of generating characteristic γ-rays at the positron annihilation time or an energy spectrum.

7. 发明专利

JP2002072268A METHOD FOR GENERATING WAVELENGTH-VARIABLE LASER LIGHT AND WAVELENGTH-VARIABLE LASER DEVICE USING THE SAME 失效
公开(公告)号：JP2002072268A
公开(公告)日：2002-03-12
申请号：JP2000266943
申请日：2000-09-04
申请人： CENTRAL RES INST ELECT
发明人： NAYUKI TAKUYA , FUJII TAKASHI , NEMOTO KOSHICHI
IPC分类号： G02F1/37 , H01S3/094 , H01S3/10
摘要： PROBLEM TO BE SOLVED: To stably obtain a high output power laser light near 430 to 450 nm wavelength for a long time and to use a widely spread dye laser device. SOLUTION: The device is equipped with a wavelength-variable dye laser 1 having LDS765 dye as the laser medium oscillating at a wavelength near 740 to 780 nm. a Nd:YAG laser 2, and sum frequency crystals 3, 4 which synthesize the sum frequency of the output waves from the wavelength-variable dye laser 1 and the fundamental waves of the Nd:YAG laser 2 to generate output waves near 430 to 450 nm wavelength.

8. 发明专利

JP2000131235A SPECTROSCOPIC MEASURING SYSTEM 失效
公开(公告)号：JP2000131235A
公开(公告)日：2000-05-12
申请号：JP30144898
申请日：1998-10-22
申请人： CENTRAL RES INST ELECT
发明人： FUKUCHI TETSUO , NEMOTO KOSHICHI , NAYUKI TAKUYA
IPC分类号： G01N21/64
摘要： PROBLEM TO BE SOLVED: To spectroscopically measure many kinds of measuring objects in a semi-real time. SOLUTION: This spectroscopic measuring system capable of measuring at least a spatial distribution of a substance based on emission from an excited state of a measuring object 2 generated by irradiating the object 2 with light is provided with a light source 3 for irradiating the object 2 with the light, an optical system 4 for shaping the light from the light source 3 into a plane beam, a spectroscopic device 6 for separating the light into its spectral components to take a fluorescent image from the object 2 excited by the light emitted from the light source 3 in and to sweep a wavelength to be separated into its spectral components, and an image picking-up device 7 for picking up an image of a spectroscopic result from the spectroscopic device 6. A wavelength for exciting the object 2 is interlocked with a wavelength for observing fluorescence to be changed by synchronizing light emitting timing in the light source 3 or wavelength switching timing with wavelength sweeping timing in the spectroscopic device 6 and image picking-up timing, so as to provide thereby two-dimensional spectroscopic images, in a semi-real time, for many kinds of substances in the measuring object 2.

9. 发明专利

JP2001267661A METHOD AND DEVICE FOR IDENTIFYING ABSOLUTE LASER WAVELENGTH 失效
公开(公告)号：JP2001267661A
公开(公告)日：2001-09-28
申请号：JP2000072954
申请日：2000-03-15
申请人： CENTRAL RES INST ELECT
发明人： NAYUKI TAKUYA , FUJII TAKASHI , NEMOTO KOSHICHI
IPC分类号： G01N21/01 , G01N21/39 , H01S3/00
摘要： PROBLEM TO BE SOLVED: To reduce the deterioration of secular measuring precision, and to reduce any influence on the measuring precision due to any mechanical assembly error. SOLUTION: This device is provided with a fluorescence generating means 3 for generating fluorescence 4 by absorbing only a laser beam 2 having an absolute wavelength standard, an image pickup means 5 for image picking up the fluorescence 4, an extracting means 6 for extracting the fluorescence 4 by processing a picture signal obtained by the image pickup means 5, and a decision means 7 for deciding that the laser beam 2 to be identified has the same wavelength as the absolute wavelength standard when the fluorescence generating means 3 is irradiated with the laser beam 2 to be identified, and the fluorescence 4 is extracted by the extracting means 6.

10. 发明专利

JPH10107377A METHOD AND DEVICE FOR GENERATING WAVELENGTH-VARIABLE LASER BEAM 失效
公开(公告)号：JPH10107377A
公开(公告)日：1998-04-24
申请号：JP25517996
申请日：1996-09-26
申请人： CENTRAL RES INST ELECT
发明人： NAYUKI TAKUYA , FUJII TAKASHI , NEMOTO KOSHICHI
IPC分类号： H01S3/10 , H01S5/00 , H01S5/068 , H01S3/18
摘要： PROBLEM TO BE SOLVED: To generate wavelength-variable laser beams by setting the amount of translation movement of a movable diffraction grating corresponding to the length of an external resonator and the rotating angle of a movable diffraction grating, so that a specific equation can be met among the external resonator length, the amount of drive current change of a laser diode, a laser oscillation wavelength, and the groove gap of a movable diffraction grating. SOLUTION: The amount of translation movement corresponding to an external resonator length and the rotary angle of a movable diffraction grating are set, so that an equation can be met among the external resonator length, an amount of drive current change of a laser diode, a laser oscillation wavelength, and the groove gap of the movable diffraction grating, thus generating wavelength variable laser beams. In the equation. λ0 indicates the laser oscillation wavelength; L2 indicates the external resonator length; ΔL2 indicates the amount of translation move corresponding to the external resonator length L2 ; Δθ indicates the rotary angle of the movable diffraction grating, ΔI indicates the amount of drive current change for the laser diode; βindicates the proportionality constant that is specific to the laser diode element for determining the amount of change of wavelength with respect to the amount of drive current change of the laser diode; and d indicates the groove gap of the movable diffraction grating.

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