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1. 发明专利

JP2929033B2 失效
公开(公告)号：JP2929033B2
公开(公告)日：1999-08-03
申请号：JP20924090
申请日：1990-08-09
申请人： GOYO KENSETSU KK , RIKAGAKU KENKYUSHO
发明人： SHIROHARA OSAMU , TANAKA MINORU , SHIGEMATSU BUNJI , MIDORIKAWA KATSUMI , SEGAWA JUZABURO , TASHIRO HIDEO
IPC分类号： G01C15/00 , B63B35/00 , G01S5/16 , G01S17/42

2. 发明专利

JPH11207479A HIGH INTENSIVE SUPER SHORT PULSE LASER BEAM MACHINING METHOD AND ITS MACHINE 失效
公开(公告)号：JPH11207479A
公开(公告)日：1999-08-03
申请号：JP2388098
申请日：1998-01-21
申请人： RIKAGAKU KENKYUSHO
发明人： KUMAGAI HIROSHI , MIDORIKAWA KATSUMI
IPC分类号： B23K26/00 , B23K26/364 , H01S3/00
摘要： PROBLEM TO BE SOLVED: To machine or reform the only internal part of a solid body without damaging the surface of the solid body. SOLUTION: An object to be machined is irradiated with high intensive super short pulse laser beams, a special change of an equal phase surface of the object to be machined is generated by the Kerr effect, whereby a self- convergence of the high intensive super short pulse laser beams is generated. And an operation break down is generated by the high intensive super short pulse laser beams which are self covered by the Kerr effect and plasma is generated in the object to be machined, whereby the high intensive super short pulse laser beams are self diverged. The self-convergence of the high intensive super short pulse lacer beams is compensated by the self-divergence, and the self-divergence and the self-convergence of the high intensive super short pulse laser beams are balanced by controlling the irradiating intensity of the high intensive super short pulse laser beams onto the object to be machined, whereby linear machine is executed toward the direction wherein the high intensive super short pulse laser beams propagate through the object to be machined.

3. 发明专利

JPH0418477B2 失效
公开(公告)号：JPH0418477B2
公开(公告)日：1992-03-27
申请号：JP26082087
申请日：1987-10-16
申请人： RIKAGAKU KENKYUSHO
发明人： TASHIRO HIDEO , MIDORIKAWA KATSUMI , NANBA SUSUMU
IPC分类号： B01D59/34 , H01S3/08 , H01S3/23 , H01S3/30

4. 发明专利

JPH0380337B2 失效
公开(公告)号：JPH0380337B2
公开(公告)日：1991-12-24
申请号：JP9738984
申请日：1984-05-14
申请人： RIKAGAKU KENKYUSHO
发明人： MEGURO TAKASHI , KOJIMA KOJI , ITO TADATSUGU , TASHIRO HIDEO , MIDORIKAWA KATSUMI , KIN HITSUGEN , NANBA SUSUMU
IPC分类号： H01L21/205 , H01L21/268

5. 发明专利

JPH01102985A MULTI-BEAM RAMAN CONVERTER 失效
公开(公告)号：JPH01102985A
公开(公告)日：1989-04-20
申请号：JP26082087
申请日：1987-10-16
申请人： RIKAGAKU KENKYUSHO
发明人： TASHIRO HIDEO , MIDORIKAWA KATSUMI , NANBA SUSUMU
IPC分类号： B01D59/34 , H01S3/08 , H01S3/23 , H01S3/30
摘要： PURPOSE:To realize multi-beam multi-wavelength type Raman laser oscillation and to obtain a highly efficient and simplified Raman laser system, by constituting only a pair of mirrors within a Raman converter and by applying multi- beam system. CONSTITUTION:In a primary mirror 31 and a secondary mirror 32 which have spot positions on two different circumferences (concentric circle) from the center of a mirror, the primary mirror 31 is provided with input ports A and B each at an arbitrary spot position on each circumference. Similarly, the secondary mirror 32 is provided with output ports (a) and (b) for A and B, respectively for projecting laser beam at a specified number of reflections. Two excitation CO2 laser beams of the same wavelength are input from the primary mirror at the same time, for example, the laser beam input from the input port of the spot position 0 reflects at the spot position 1 of the secondary mirror and is reflected at the spot position 3 of the primary mirror. Thus reciprocating reflections are repeated to project Raman laser of two beams after Raman- conversion before reaching an output port d.

6. 发明专利

JP2002328199A METHOD AND DEVICE FOR LASER-COOLING OF ATOM, AND COHERENT LIGHT SOURCE USED FOR LASER-COOLING OF ATOM 审中-公开
公开(公告)号：JP2002328199A
公开(公告)日：2002-11-15
申请号：JP2002011558
申请日：2002-01-21
申请人： RIKAGAKU KENKYUSHO
发明人： KUMAGAI HIROSHI , MIDORIKAWA KATSUMI
IPC分类号： G21K1/00 , G02F1/11 , G02F1/37 , G04F5/14 , H01S3/00 , H05H3/04
摘要： PROBLEM TO BE SOLVED: To allow laser cooling of various atoms including semiconductor atoms such as silicon and germanium. SOLUTION: In this method of laser-cooling the atoms having a plurality of magnetic sublevels as the cooling lower level of a ground state on an energy level, coherent light of prescribed wavelength having a plurality of different polarized light corresponding to a plurality of magnetic sublevels which are the cooling lower level of the ground state of the atoms to be laser-cooled are irradiated on the atoms in regular sequence with a time lag at prescribed time intervals.

7. 发明专利

JP2001201598A CONTROL METHOD OF ATOMIC BEAM AND DEVICE THEREFOR 失效
公开(公告)号：JP2001201598A
公开(公告)日：2001-07-27
申请号：JP2000010516
申请日：2000-01-19
申请人： RIKAGAKU KENKYUSHO
发明人： KUMAGAI HIROSHI , MIDORIKAWA KATSUMI
IPC分类号： G21K1/00
摘要： PROBLEM TO BE SOLVED: To provide a control method of atomic beam and device therefor allowing the prevention of extension of an atomic beam, the separation and removal of a cluster from the atomic beam, the separation and removal of an isotope from the atomic beam and the control of the isotope. SOLUTION: A coherent light having a wavelength conformed to or positively or negatively detuned from the atomic resonance line of a prescribed kind of atom constituting the atomic beam is emitted to the atomic beam to perform the movement control by the laser cooling of the atom.

8. 发明专利

JP2000187167A WIDE BAND SPATIAL OPTICAL PHASE MODULATOR 失效
公开(公告)号：JP2000187167A
公开(公告)日：2000-07-04
申请号：JP36394298
申请日：1998-12-22
申请人： RIKAGAKU KENKYUSHO
发明人： SUDA AKIRA , MIDORIKAWA KATSUMI
IPC分类号： G02B26/06
摘要： PROBLEM TO BE SOLVED: To precisely control distributed compensation regardless of intensity of laser beam power in a wide wavelength region by providing a tilt angle changing means which changes an inclination of a parallel flat plate composed of an optical transmitting material. SOLUTION: When a quartz parallel flat plate 18 is made incident with short pulse laser beams, first, a prescribed voltage is applied to a bimorph piezo-actuator 20 by electric control from a controller 24, and the bimorph piezo-actuator 20 is distorted in accordance with a tension of the applied voltage to bend in the direction of the arrow A. Since the bimorph piezo-actuator 20 is bent in the direction of the arrow A, the quartz parallel flat plate 18 is inclined in the direction of the arrow B. That is, a spatial phase modulation is imparted to the laser beams transmitting those by independently and moreover optionally changing the inclination of the quartz parallel flat plate 18. Thus, the pulse width of the laser beams transmitting the quartz parallel flat plate 18 is compressed.

9. 发明专利

JPH0357635B2 失效
公开(公告)号：JPH0357635B2
公开(公告)日：1991-09-02
申请号：JP24767187
申请日：1987-09-30
申请人： RIKAGAKU KENKYUSHO
发明人： TASHIRO HIDEO , MIDORIKAWA KATSUMI , NANBA SUSUMU
IPC分类号： B01D59/34 , G02F1/35 , H01S3/00 , H01S3/094 , H01S3/131 , H01S3/30 , H01S5/00

10. 发明专利

JPH036408A MEASURING APPARATUS FOR SHAPE OF UNDERWATER OBJECT BY USE OF LASER 失效
公开(公告)号：JPH036408A
公开(公告)日：1991-01-11
申请号：JP14065689
申请日：1989-06-02
申请人： RIKAGAKU KENKYUSHO , PENTA OCEAN CONSTRUCTION
发明人： MIDORIKAWA KATSUMI , SEGAWA YUZABURO , TASHIRO HIDEO , TAJIMA MASANORI , TANAKA MINORU
IPC分类号： G01B11/24 , G01D21/00
摘要： PURPOSE:To detect the depth and the position of a surface to be measured in relation to a datum point of a ship or an underwater moving body and to measure the shape of an underwater structure or the like by emitting a laser onto the surface to be measured and by making it scan the surface. CONSTITUTION:The course of a pulse laser PB emitted from a laser oscillator 2 is bent in the perpendicular direction by a beam splitter 3 and a prism 4 and led to a scanner mirror 6 by a scanner motor 5. Then the laser PB is reflected and also deflected in the direction vertical to the direction of incidence by the mirror 6 and is applied to a substance 8 to be measured, around a datum point SP of emission, through a glass window 7. The angle of deflection of said mirror 6 is subjected to deflection angle detection 9. A pulsed laser RB reflected at a point P irradiation of the surface 8 to be measured is caught in the field of view of a reflecting telescope 10 through the intermediary of the mirror 6 and sensed 11 as a signal light. The light-sensing element 11 checks light other than the signal light by means of a stop 12 and BPF 13 and the light is sensed by a photomultiplier 14.

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