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1. 发明专利

DE69021436D1 未知
公开(公告)号：DE69021436D1
公开(公告)日：1995-09-14
申请号：DE69021436
申请日：1990-05-15
申请人： FUJI PHOTO FILM CO LTD
发明人： HARADA AKINORI , GOTO CHIAKI
IPC分类号： G02F1/377 , G02F1/383 , G02F1/37
摘要： An optical wavelength converter device comprises a cladding and a waveguide disposed in the cladding. The waveguide is made of an organic nonlinear optical material such as PRA which has a first refractive index with respect to the wave-length of the wavelength-converted wave and a second refractive index with respect to the wavelength of the fundamental wave, the first refractive index being lower than the second refractive index. Alternatively, the first and second refractive indexes are substantially the same as each other, and the cladding is made of a material which has a third refractive index with respect to the wavelength of the wavelength-converted wave and fourth refractive index with respect to the wavelength of the fundamental wave, the third refractive index being substantially the same as the fourth refractive index. The effective refractive index with respect to the fundamental wave which is guided in a zero-order mode and the effective refractive index with respect to the wavelength-converted wave which is guided in the zero-order mode are equal to each other.

2. 发明专利

DE10009321A1 Sampling/scanning optics of laser beam emitted by laser light source for producing image on recording carrier has second base on which another optical element located along optical axis of optical elements located on first base 未知
公开(公告)号：DE10009321A1
公开(公告)日：2000-09-07
申请号：DE10009321
申请日：2000-02-28
申请人： FUJI PHOTO FILM CO LTD
发明人： SAITO KENICHI , GOTO CHIAKI
IPC分类号： G02B26/12 , H04N1/23 , H04N1/04 , G02B26/10
摘要： At least two optical elements are mounted on a first base (136) along an optical axis of the laser beam after the position relation was adjusted between them. A second base (134) on which another optical element is located along the optical axis to the optical elements located on the first base. The first base is fixed after the position relation between the other optical element and an individual optical element is established.

3. 发明专利

DE69021436T2 未知
公开(公告)号：DE69021436T2
公开(公告)日：1996-01-25
申请号：DE69021436
申请日：1990-05-15
申请人： FUJI PHOTO FILM CO LTD
发明人： HARADA AKINORI , GOTO CHIAKI
IPC分类号： G02F1/377 , G02F1/383 , G02F1/37
摘要： An optical wavelength converter device comprises a cladding and a waveguide disposed in the cladding. The waveguide is made of an organic nonlinear optical material such as PRA which has a first refractive index with respect to the wave-length of the wavelength-converted wave and a second refractive index with respect to the wavelength of the fundamental wave, the first refractive index being lower than the second refractive index. Alternatively, the first and second refractive indexes are substantially the same as each other, and the cladding is made of a material which has a third refractive index with respect to the wavelength of the wavelength-converted wave and fourth refractive index with respect to the wavelength of the fundamental wave, the third refractive index being substantially the same as the fourth refractive index. The effective refractive index with respect to the fundamental wave which is guided in a zero-order mode and the effective refractive index with respect to the wavelength-converted wave which is guided in the zero-order mode are equal to each other.

4. 发明专利

JP2002204025A LASER LIGHT SOURCE AND IMAGE-FORMING DEVICE 失效
公开(公告)号：JP2002204025A
公开(公告)日：2002-07-19
申请号：JP2000371513
申请日：2000-12-06
申请人： FUJI PHOTO FILM CO LTD
发明人： GOTO CHIAKI , SONODA SHINICHIRO
IPC分类号： B41J2/44 , G02F1/377 , H01S5/14 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To prevent noise from being generated by the mode hop of a semiconductor light-emitting device and at the same time the internal power of the semiconductor light-emitting device from increasing for causing damage in a laser light source where the semiconductor light-emitting device is directly coupled to a waveguide-type wavelength selection element for selecting the wavelength of light being emitted from the semiconductor light-emitting device. SOLUTION: The semiconductor light-emitting device 10 is directly coupled to the waveguide-type wavelength selection element 20 for selecting the wavelength of light being emitted from the semiconductor light-emitting device 10, and a resonator for resonating light with a wavelength being selected from the wavelength selection element 20 is composed by an end face 10b at the opposite side of the wavelength selection element 20 of the semiconductor light-emitting device 10 and the wavelength selection element 20. Then, an optical system between each of the directly coupled one end faces 10a and 20b of the semiconductor light-emitting device 10 and the wavelength selection element 20 is set to a reflection prevention optical system, for example, by forming AR coat on the end faces, and a laser beam 11 that is oscillated by the resonator is emitted from an end face opposite to the wavelength selection element 20 of the semiconductor light-emitting device 10.

5. 发明专利

JPH1098222A WAVELENGTH CONVERTING SOLID-STATE LASER 失效
公开(公告)号：JPH1098222A
公开(公告)日：1998-04-14
申请号：JP24997596
申请日：1996-09-20
申请人： FUJI PHOTO FILM CO LTD
发明人： GOTO CHIAKI
IPC分类号： G02F1/37 , H01S3/0933 , H01S3/109
摘要： PROBLEM TO BE SOLVED: To accurately stabilize the wavelength conversion output with respect to the aging and ambient temp. change by covering with a cover member a resonator part for resonating a light, emitted from a laser crystal by excitation. SOLUTION: A resonator mirror 14 is disposed at the side opposite to a semiconductor laser 11 for emitting a laser beam 10 as an excitation light. The beam 10 as a fundamental wave is applied to an inversion domain LN crystal 15 for converting it into a second harmonic wave 19 of half the wavelength. An APC photodetector 25 mounted on the end face 22b of a resonator 21 detects a reflected harmonic wave 19. A condenser lens 12 condenses the laser beam 10 to be converted in the crystal 13, the beam 10 passing through an Nd:YAG crystal 13 is reflected and scattered by a holder, etc., which mounts optical members in a holding member 21. The resonator part is covered with a U-shaped sectional cover member 40 with an open underside, to prevent light from leaking, as the reflected lights may be incident on an APC photodetector 25 via a partially reflecting mirror.

6. 发明专利

JPH08148747A SOLID-STATE LASER APPARATUS 失效
公开(公告)号：JPH08148747A
公开(公告)日：1996-06-07
申请号：JP28955794
申请日：1994-11-24
申请人： FUJI PHOTO FILM CO LTD
发明人： MATSUMOTO KENJI , GOTO CHIAKI
IPC分类号： G02B5/28 , G02F1/37 , H01S3/042 , H01S3/08 , H01S3/094 , H01S3/098 , H01S3/106 , H01S3/109 , H01S3/13 , H01S3/16
摘要： PURPOSE: To obtain a solid-state laser apparatus capable of generating a single vertical mode laser beam polarized linearly stably. CONSTITUTION: In a resonator composed of an end surface 13a of an Nd:YAG crystal 13 being a solid-state laser medium and a resonator mirror 14, a calcite etalon 16 being a polarization controlling element obtained by angle-cutting a crystal having a double refracting property, and another etalon 17 from it are arranged.

7. 发明专利

JPH0888428A LASER DIODE PUMPING SOLID LASER 失效
公开(公告)号：JPH0888428A
公开(公告)日：1996-04-02
申请号：JP22506994
申请日：1994-09-20
申请人： FUJI PHOTO FILM CO LTD
发明人： GOTO CHIAKI , MATSUMOTO KENJI
IPC分类号： H01S3/042 , F25B21/02 , F25D19/00 , H01S3/04 , H01S3/094 , H01S3/043
摘要： PURPOSE: To improve temperature control accuracy of a laser diode pumping solid laser wherein, with a solid laser module fixed to a mounting member, multiple temperature control elements are provided between the mounting member and a base plate for temperature control. CONSTITUTION: The parts of a mounting member 19 that face respective temperature control surfaces 22b and 23b of multiple Peltier elements (temperature control element) 22 and 23 are slopes 19a and 19b which form specified angle θagainst the temperature control surfaces 22b and 23b, and, through a heat conduction block 24 containing two wedge surfaces 24a and 24b which form the angle θ equal to specified angle, the Peltier element temperature control surface 22b and the slope 19a are connected together, and similarly, through a heat conduction block 25 containing two wedge surfaces 25a and 25b, the Peltier element temperature control surface 23b and the slope 19b are connected together.

8. 发明专利

JPH0833563B2 失效
公开(公告)号：JPH0833563B2
公开(公告)日：1996-03-29
申请号：JP26331788
申请日：1988-10-19
申请人： FUJI PHOTO FILM CO LTD
发明人： GOTO CHIAKI
IPC分类号： G02F1/37 , G02F1/383

9. 发明专利

JPH0669569A OPTICAL WAVELENGTH CONVERSION APPARATUS 失效
公开(公告)号：JPH0669569A
公开(公告)日：1994-03-11
申请号：JP22172592
申请日：1992-08-20
申请人： FUJI PHOTO OPTICAL CO LTD , FUJI PHOTO FILM CO LTD
发明人： SAITO TAKAYUKI , GOTO CHIAKI
IPC分类号： G02F1/37 , H01S3/06 , H01S3/094 , H01S3/109
摘要： PURPOSE:To oscillate the fundamental wave of a desired output light with simple constitution, by forming a solid laser crystal in a wedge type wherein an outer end surface and an inner end surface are intersecting. CONSTITUTION:An optical wavelength conversion apparatus 16 consists of the following; a wedge type Nd-doped YAG laser crystal 13 irradiated with pumping laser light, an output mirror 14 and an end surface mirror formed on the pumping laser light incidence end surface 13A whose mirrors resonate laser light, and a KNbO3 crystal 15 which outputs the second harmonic wave form the inputted fundamental wave. The inclination of a second end surface 13B to a path 21 is so adjusted that the angle of refraction of laser light whose wavelength is to be oscillated becomes equal to the wedge angle theta1 (crossing angle of a first end surface 13A and the second end surface 13B) of the YAG laser crystal 13. Thereby only the laser light of desired wavelength is normally reflected by the end surface mirror of the second end surface 13B.

10. 发明专利

JPH05188421A OPTICAL WAVELENGTH CONVERTING DEVICE 失效
公开(公告)号：JPH05188421A
公开(公告)日：1993-07-30
申请号：JP8233391
申请日：1991-04-15
申请人： FUJI PHOTO FILM CO LTD
发明人： GOTO CHIAKI
IPC分类号： G02F1/37 , F25B21/02 , H01S3/109
摘要： PURPOSE:To prevent an optical wavelength conversion device which converts a fundamental wave into a 2nd higher harmonic by two-axial crystal having nonlinear optical effect, from decreasing in wavelength conversion efficiency owing to the deviation of the linear polarizing direction of the fundamental wave from a specific angle to the crystal optical axis due to the phase difference of the fundamental wave in the crystal. CONSTITUTION:While the temperature of the KTP crystal 10 is controlled by a Peltier element 30, the fundamental wave 11 is split by a polarization beam splitter 34 into two polarized components intersecting orthogonally with each other whose intensity values are detected by a 1st photodetector 35 and a 2nd photodetector 36. The driving of the Peltier element 30 is controlled by a Peltier controller 31 so that the output S1 of the 1st photodetector 35 becomes equal to the output S2 of the 2nd photodetector 36.

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