WO2021250885A1 - Composant optique et dispositif laser à fibre - Google Patents

Composant optique et dispositif laser à fibre Download PDF

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Publication number
WO2021250885A1
WO2021250885A1 PCT/JP2020/023181 JP2020023181W WO2021250885A1 WO 2021250885 A1 WO2021250885 A1 WO 2021250885A1 JP 2020023181 W JP2020023181 W JP 2020023181W WO 2021250885 A1 WO2021250885 A1 WO 2021250885A1
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Prior art keywords
fiber
angle
crystal fiber
face
single crystal
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PCT/JP2020/023181
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English (en)
Japanese (ja)
Inventor
茂雄 石橋
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日本電信電話株式会社
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Priority to JP2022529985A priority Critical patent/JP7396480B2/ja
Priority to PCT/JP2020/023181 priority patent/WO2021250885A1/fr
Publication of WO2021250885A1 publication Critical patent/WO2021250885A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers

Definitions

  • the present invention relates to a highly efficient and highly stable optical component and a laser device.
  • Non-Patent Document 1 a mode-synchronized laser is configured by using a Cr 4+ : Y3Al5O12 (Cr 4+ : YAG) single crystal fiber, and an optical pulse having a pulse width of 120 fs is output at a center wavelength of 1.51 ⁇ m.
  • This laser is used as a light source for a nonlinear optical microscope and a light source for generating THz waves.
  • FIGS. 14 to 17 when the single crystal fiber 81 is incorporated into a laser oscillator, it is attached to a dedicated fiber fixing base 82 (Patent Document 1). 14, 15 and 16 are a top view, a front view and a side view of the fiber fixing base 82, respectively.
  • the fiber fixing base 82 used here has a structure in which two upper and lower metal blocks 821 and 822 are stacked. On the inner surface of these two blocks, straight grooves 823 and 824 having a semi-elliptical cross section are formed, respectively. When they are stacked, they are in the same position and a hole with an oval cross section is formed.
  • the single crystal fiber 81 is sandwiched between the grooves 823 and 824 and fixed with a metal thin film interposed therebetween. With this structure, good heat is exhausted, and by inducing appropriate stress birefringence in the single crystal fiber 81, it becomes possible to control the laser oscillation polarization.
  • the end face 92 of the fiber fixing base 82 is perpendicular to the directions of the grooves 823 and 824 in which the single crystal fiber 81 is sandwiched.
  • the size of the single crystal fiber 81 is 120 ⁇ m in diameter and about 40 mm in length.
  • the fiber fixing base 82 is also set to have approximately the same length.
  • FIG. 18 shows a top view of the end portion of a conventional optical component or fiber laser device.
  • the end of the single crystal fiber 81 fixed to the fiber fixing base 82 protrudes from the fixing base 82 having a length of approximately 100-500 ⁇ m. It is not realistic to match the lengths of the single crystal fiber 81 and the fixed base 82 exactly (below the oscillation wavelength) because the processing cost increases.
  • the end face 92 of the fixed base 82 and the end face 91 of the single crystal fiber 81 become the same surface, a metal thin film for cushioning is applied to the end face 91 of the single crystal fiber 81, blocking a part of the optical path and lowering the oscillation efficiency. There is a risk that it will end up.
  • the protruding portion 94 at the end of the single crystal fiber 81 is necessary for optical components and fiber laser devices.
  • the protruding end (protruding portion) 94 is not stressed. Therefore, a boundary of the refractive index is generated in the single crystal fiber 81 near the same surface 95 as the end surface of the fixed base 82 in the single crystal fiber 81, and the laser oscillation light 96 is reflected. (Actually, the oscillating light 96 and the reflected light 97 follow the same optical path, but in FIG. 18, the position of the reflected light 97 is shifted upward on the paper so that the oscillating light 96 and the reflected light 97 can be easily distinguished.)
  • Non-Patent Document 2 When this reflected light is mixed with the laser oscillation light, a sub-resonator is generated in the laser resonator, and the spectrum of the laser oscillation light 96 is periodically modulated (Non-Patent Document 2). As a result, there are problems that the threshold value of the mode-synchronized oscillation increases and that two or more mode-synchronized pulses are likely to be generated in the circumference of the resonator.
  • the optical component according to the present invention includes a single crystal fiber having a refractive index n and a fixed base, and the incident light passes through the opening of the aperture throttle, and the incident angle ⁇ .
  • the incident light passes through the opening of the aperture throttle, and the incident angle ⁇ .
  • the traveling plane and the plane on which the reflected light travels travel at an angle of 2 ⁇ and the reflected light is emitted from the end face of the single crystal fiber at an emission angle ⁇ ', the plane including the end face of the fixed base is used.
  • the angle between the Z axis and the central axis of the single crystal fiber is ⁇
  • the normal line of the end face of the fixed base and the single crystal fiber is ⁇
  • the angle with the central axis of the crystal fiber is ⁇
  • the distance between the end face of the single crystal fiber and the opening throttle is L
  • the radius of the opening is d
  • the following formula (A) is satisfied.
  • an optical component and a laser device provided with a highly efficient and highly stable fiber amplifier and a fixed base.
  • FIG. 1 is a schematic diagram of an optical component according to the first embodiment of the present invention.
  • FIG. 2 is an external view of an optical component according to the first embodiment of the present invention. It is a top view of.
  • FIG. 3 is an external view of the fixed base according to the first embodiment of the present invention.
  • FIG. 4 is a top view of the fixed base according to the first embodiment of the present invention.
  • FIG. 5 is a front view of the fixed base according to the first embodiment of the present invention.
  • FIG. 6 is a side view of the fixed base according to the first embodiment of the present invention.
  • FIG. 7 is a front view of an optical component according to the first embodiment of the present invention.
  • FIG. 8 is a top view of the periphery of the end portion of the optical component according to the first embodiment of the present invention.
  • FIG. 9 is a diagram showing the relationship between the fiber end face and the aperture throttle in the first embodiment of the present invention.
  • FIG. 10 is a top view of the periphery of the end portion of the optical component according to the second embodiment of the present invention.
  • FIG. 11 is a diagram showing trajectories of oscillated light and reflected light according to the second embodiment of the present invention.
  • FIG. 12 is a diagram showing trajectories of oscillated light and reflected light according to the third embodiment of the present invention.
  • FIG. 13 is a schematic view of the fiber laser apparatus according to the fourth embodiment of the present invention.
  • FIG. 14 is a top view of a fixed base in a conventional optical component.
  • FIG. 15 is a front view of a fixed base in a conventional optical component.
  • FIG. 16 is a side view of a fixed base in a conventional optical component.
  • FIG. 17 is a front view of a fixed base in a conventional optical component.
  • FIG. 18 is a top view of
  • FIG. 1 shows a schematic diagram of an optical component 10 according to the present embodiment.
  • the optical component 10 includes a single crystal fiber 11 and a fixing base 12.
  • the single crystal fiber 11 is fixed to the fixing base 12.
  • the two aperture diaphragms 131 and 132 are arranged so as to face each other with the single crystal fiber 11 interposed therebetween.
  • the incident light 14 passes through the aperture of the aperture diaphragm 131 and enters the single crystal fiber 11, and the emitted light 15 passes through the aperture of the aperture diaphragm 132 and is emitted.
  • FIG. 2 shows a bird's-eye view of the optical component 10 according to the present embodiment (opening diaphragms 131 and 132 are not shown).
  • the fixing base 12 is composed of a set of two copper blocks 121 and 122.
  • the single crystal fiber 11 is sandwiched from above and below by a set of two copper blocks 121 and 122 of the fixing base 12, and is fixed to the fixing base 12.
  • a metal having good thermal conductivity such as aluminum may be used for the blocks 121 and 122 of the fixing base 12.
  • the fixing base 12 is fixed on the copper base 21 as a base by the screws 22 at the four corners.
  • the direction substantially parallel to the central axis 16 of the fiber 11 is referred to as "the central axis direction of the fiber 11".
  • the tip of the single crystal fiber 11 projects outward by about 200 ⁇ m from the end surface 32 of the fixing base 12 and is fixed. If the protruding portion at the tip of the fiber 11 is too long, the fixing base 12 cannot sufficiently cool the fiber 11. Further, if the protruding portion is too long, as will be described later, the reflected light may not be emitted from the end surface 31 of the fiber 11 but may be totally reflected on the side surface of the fiber 11 and affect the laser light propagating in the fiber 11. There is. Therefore, the length of the protruding portion is preferably 50 ⁇ m or more and 500 ⁇ m.
  • FIG. 3 shows a bird's-eye view of the fiber fixing base 12. Further, FIGS. 4, 5 and 6 show a top view, a front view and a side view of the fiber fixing base 12.
  • the fiber fixing base 12 in the present embodiment has both end faces inclined substantially in parallel.
  • the respective surfaces facing each other hereinafter referred to as "optical axis direction end surfaces"
  • the end faces in the optical axis direction do not need to be completely aligned and overlapped, and a deviation may occur in the central axis direction of the fiber 11. This deviation is allowed if it is about 250 ⁇ m, and in this case, a step is generated at the boundary between the two blocks 121 and 122 on the end surface 32 of the fixing base 12.
  • Straight grooves 123 and 124 are formed on the overlapping surfaces to fix the single crystal fiber 11.
  • the cross-sectional shape of the grooves 123 and 124 is preferably a semi-elliptical shape for heat dissipation and fixing of the light source single crystal.
  • indium foil is used, but the present invention is not limited to this, and a flexible metal foil or resin foil may be used. Any material with good thermal conductivity is even better. As a result, good heat is exhausted, and laser oscillation polarization can be controlled by inducing appropriate stress birefringence in the single crystal fiber 11.
  • FIG. 7 shows a front view of the optical component 10 (opening diaphragms 131 and 132 are not shown).
  • the single crystal fiber 11 is fixed to the grooves 123 and 124 of the fixing base 12.
  • the lengths of the grooves 123 and 124 of the fiber fixing base 12 are set to be substantially the same length.
  • the groove of the fixing base 12 has a semi-circular cross section, and in consideration of the thickness (5 ⁇ m to 50 ⁇ m) of the indium foil sandwiched between the block and the fiber 11, it is between the facing block surfaces (facets).
  • the interval is 120 ⁇ m, the width is 150 ⁇ m, and the depth is 55 ⁇ m.
  • the size of the groove of the fixing base 12 is not limited to this, and it is sufficient that the fiber 11 can be satisfactorily fixed according to the size of the fiber 11.
  • FIG. 8 shows a top view of the vicinity of one end surface of the optical component 10 according to the present embodiment.
  • the inclination angle ⁇ of the end face 31 of the fiber 11 is such that the normal of the end face 31 of the fiber 11 is in the direction of the central axis of the fiber 11 when the long axis of the end face 31 having a substantially elliptical shape is parallel to the horizontal plane.
  • the inclination angle ⁇ of the end face 32 of the fixed base 12 means the angle formed by the normal line of the end face 32 of the fixed base 12 and the central axis direction of the fiber 11.
  • the single crystal fiber 11 protrudes from the end surface 32 of the fixing base 12 and is fixed.
  • FIG. 8 for the sake of simplicity, only the components incident on the end face 31 of the fiber 11 of the incident light (oscillation light) 41 are shown.
  • stress is applied to the portion sandwiched between the fixing bases 12.
  • the portion to which this stress is applied is referred to as a “stress applying portion” 33.
  • the protruding portion 34 at the tip of the single crystal fiber 11 is not sandwiched between the fixing bases 12, no stress is applied.
  • the end face 31 of the single crystal fiber 11 is subjected to diagonal polishing of the end face so that its normal has an angle ⁇ with respect to the central axis direction of the fiber 11. Further, the normal of the end face is set at an angle ⁇ with respect to the central axis direction of the fiber 11 so that the end face 32 of the fiber fixing base 12 is also parallel to the end face 31 of the single crystal fiber 11.
  • the incident angle ⁇ of the incident light (oscillating light) 41 with respect to the end surface 31 of the fiber 11 satisfies the equation (1) according to Snell's law, the incident light (oscillating light) 41 is incident from the end surface 31 of the fiber 11. , Propagate in the fiber 11 in the direction of the central axis of the fiber 11.
  • the incident light (oscillating light) 41 is reflected near the end surface 32 of the fiber fixing base 12.
  • the incident light (oscillation light) 41 is reflected on substantially the same surface as the end surface 32 of the fixed base 12 inside the fiber 11.
  • the reflected light 42 propagates in an optical path different from the incident light (oscillating light) 41 propagating in the fiber 11.
  • the angle formed by the reflected light 42 with the incident light (oscillating light) 41 propagating in the fiber 11 is 2 ⁇ .
  • the emission angle ⁇ 'at this time is equal to the incident angle and is ⁇ .
  • the reflected light 42 from the reflection point in the single crystal fiber 11 does not stay in the resonator, and the longitudinal mode distribution of the oscillating light 41 is not modulated. ..
  • the optical component 50 according to the present embodiment has substantially the same configuration as that of the first embodiment, except that the fiber end face 31 and the end face 32 of the fixing base 12 are non-parallel.
  • FIG. 10 shows a top view of the vicinity of one end surface of the optical component 50 according to the present embodiment.
  • the perpendicular line from the reflection point 51 on the plane including the end surface 32 of the fixing base 12 to the end surface 31 of the fiber 11 is defined as the Z axis 52.
  • FIG. 11 is a diagram showing the vicinity of one end surface of the optical component 50 similar to FIG. 10 in coordinates with the Z axis 52 in the vertical direction of the paper surface.
  • the arrow 53 in FIG. 10 indicates the positive direction of the angle.
  • the end face 31 of the fiber is inclined, and the normal line of the fiber end face 31 forms an inclination angle ⁇ with the central axis direction of the fiber 11. Further, the end surface 32 of the fixed base 12 is inclined in the same direction as the fiber end surface 31, and the normal line of the end surface 32 of the fixed base 12 forms an inclination angle ⁇ with the traveling direction.
  • a surface on which the incident light (oscillating light) 41 is incident on the fiber 11 and propagates in the fiber 11 (hereinafter referred to as an “oscillating light traveling surface”).
  • the normal of the fiber end face 31, and the normal of the end face 32 of the fixing base 12 are parallel to each other.
  • the normal of the end face 32 of the fixed base 12 forms an angle ⁇ - ⁇ with respect to the Z axis 52.
  • the reflected light 42 travels in the same direction as the traveling direction of the incident light 41 on the parallel plane of the fiber end face 31, in other words, when viewed from above the fiber end face 31.
  • the incident light (oscillation light) 41 enters the fiber 11 at an incident angle ⁇ , propagates in the fiber 11 in parallel with the traveling direction, and propagates in the vicinity of the end surface 32 of the fixed base 12 at an angle of 2 ⁇ with the central axis direction of the fiber 11. It reflects and reaches the fiber end face 31 at an angle ⁇ -2 ⁇ , and emits light from the fiber end face 31 at an exit angle ⁇ '.
  • the emission angle ⁇ 'of the reflected light 42 emitted from the fiber end surface 31 satisfies the equation (3). Further, in order to avoid the reflected light 42 from being incident on the aperture diaphragms 131 and 132, it is necessary to satisfy the equation (4).
  • the reflected light 42 from the reflection point in the single crystal fiber 11 does not stay in the resonator, and the longitudinal mode distribution of the oscillating light 41 is not modulated. ..
  • the optical component 60 according to the present embodiment has substantially the same configuration as that of the first embodiment, except that the fiber end face 31 and the end face 32 of the fixing base 12 are non-parallel. Further, it has substantially the same configuration as that of the second embodiment, except that the normal of the end surface 32 of the fixed base 12 is not parallel to the oscillating light traveling surface 54.
  • the reflected light 42 since the end surface 32 of the fixing base 12 is inclined in an arbitrary direction, the reflected light 42 also travels in an arbitrary direction.
  • the surface (hereinafter referred to as “reflected light traveling surface”) 55 on which the reflected light 42 travels with respect to the oscillating light traveling surface 54 rotates at a predetermined angle around the Z axis 52.
  • the optical paths of the incident light and the reflected light 42 are substantially the same as those of the second embodiment.
  • the perpendicular line from the reflection point 51 on the plane including the end surface 32 of the fixing base 12 to the end surface 31 of the fiber 11 is the Z axis 52. Details will be described below.
  • FIG. 12 is a diagram showing the vicinity of one end surface of the optical component 60 according to the present embodiment in coordinates with the Z axis 52 in the vertical direction of the paper surface.
  • the fiber end face 31 is inclined, and the normal line of the fiber end face 31 forms an inclination angle ⁇ with the central axis direction of the fiber 11. Further, it is assumed that the end surface 32 of the fixed base 12 is inclined and the normal of the end surface 32 of the fixed base 12 forms an angle ⁇ - ⁇ with respect to the Z axis 52.
  • the incident light (oscillation light) 41 enters the fiber at an incident angle ⁇ and propagates in the fiber in the direction of the central axis of the fiber 11.
  • the incident light (oscillation light) 41 travels in the same plane (oscillation light traveling surface) 54.
  • the incident light (oscillation light) 41 is reflected at the reflection point 51 near the end face 32 of the fixed base 12.
  • the reflected light 42 uses the Z axis 52 as the rotation axis. It travels on the surface (reflected light traveling surface) 55 rotated by an angle of 2 ⁇ from the oscillating light traveling surface 54. In this way, the reflected light 42 travels in a direction forming an angle 2 ⁇ with the traveling direction of the incident light (oscillating light) 41 on the parallel plane of the fiber end surface 31, in other words, when viewed from above the fiber end surface 31. ..
  • the reflected light 42 on the reflection traveling surface reaches the fiber end surface 31 at the incident angle ⁇ -2 ⁇ and is emitted at the emission angle ⁇ ', as in the second embodiment.
  • the emission angle ⁇ 'from the fiber end face 31 of the reflected light 42 satisfies the equation (5) according to Snell's law.
  • the incident angle ⁇ of the incident light (oscillating light) 41, the emission angle ⁇ 'of the reflected light 42, and the oscillating light traveling surface 54 are used.
  • the angle formed by the incident light 41 and the reflected light 42 defined by the angle 2 ⁇ formed by the reflected light traveling surface 55 needs to be larger than tan -1 (d / L).
  • the reflected light 42 from the reflection point in the single crystal fiber 11 does not stay in the resonator, and the longitudinal mode distribution of the oscillating light 41 is not modulated. ..
  • FIG. 13 shows the laser device 70 according to the present embodiment.
  • the laser device 70 includes the optical component 10 according to the first embodiment, two aperture diaphragms 131 and 132 facing each other across the optical component 10, and the concave mirror facing the optical component 10 and the aperture diaphragm 131 and 132 sandwiching the optical component 10. It includes 71, 72, a condenser lens 73, and a pump light light source 74. As described above, in the laser device 70, concave mirrors 71 and 72 are provided to form a resonator structure.
  • the radius of curvature of the concave mirrors 71 and 72 is 100 mm.
  • One concave mirror 71 has a transmittance of 99.9% with respect to light having a wavelength of 1.40 ⁇ m to 1.60 ⁇ m
  • the other concave mirror 72 is an output coupling mirror of 1.40 ⁇ m to 1.60 ⁇ m. It has a transmittance of 1% with respect to light of a wavelength.
  • the focal length of the condenser lens 73 is 120 mm.
  • the pump light light source 74 emits pump light having a wavelength of 1.064 ⁇ m.
  • the optical component according to the first embodiment is used, but the same result can be obtained by using the optical component according to the second and third embodiments.
  • the number of mirrors constituting the laser cavity is two, but a laser resonator having a Z-shaped shape, an X-shaped shape, or a ring-shaped structure may be configured by using three or more mirrors. It produces similar results.
  • the embodiment of the present invention is effective not only in the case of Cr 4+ : YAG single crystal fiber but also in the case of fixing a single crystal fiber using another laser crystal.
  • a laser crystal a YAG crystal to which Yb, Nd, Er, Tm, and Ho are added, a Ti sapphire crystal, and a Cr forsterite crystal can be used. It is also effective when a polycrystalline fiber is used.
  • the fixing base when the fixing base is installed on a horizontal surface, two blocks are arranged above and below the fiber to sandwich and fix the fiber, but the two blocks are arranged on the left and right sides of the fiber.
  • the fiber may be sandwiched and fixed.
  • the present invention can be applied to the medical field such as material processing in the industrial field as well as optical communication equipment and systems in the information and communication field.
  • Single crystal fiber 12
  • Fixed base 131, 132 Aperture throttle 16 Central axis of single crystal fiber 31 End face of single crystal fiber 32 End face of fixed base 41 Incident light 42 Reflected light

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

La présente invention concerne un composant optique (10) comprenant : une fibre monocristalline (11) présentant un indice de réfraction n ; et une base de fixation (12). Une lumière incidente (41) passe à travers une ouverture (131, 132) d'une butée d'ouverture, est incidente sur une surface d'extrémité (31) de la fibre monocristalline à un angle d'incidence θ, et est réfléchie au niveau d'un plan comprenant une surface d'extrémité (32) de la base de fixation dans la fibre monocristalline. Une lumière de réflexion (42) se propage sur un plan parallèle de la surface d'extrémité (31) de la fibre monocristalline de sorte qu'un plan sur lequel la lumière incidente (41) se propage et un plan sur lequel la lumière de réflexion (42) se propage forment un angle 2γ, et la lumière de réflexion (42) est émise depuis la surface d'extrémité (31) de la fibre monocristalline à un angle d'émission θ'. À ce moment, si l'axe Z est défini comme une ligne perpendiculaire s'étendant depuis un point de réflexion (51) sur le plan comprenant la surface d'extrémité (32) de la base de fixation (12) vers la surface d'extrémité (31) de la fibre monocristalline, alors l'angle entre l'axe Z et l'axe central (16) de la fibre monocristalline est α, l'angle entre une ligne perpendiculaire à la surface d'extrémité (32) de la base de fixation (12) et l'axe central (16) de la fibre monocristalline est β, la distance entre la surface d'extrémité (31) de la fibre monocristalline et la butée d'ouverture (131, 132) est L, le rayon de l'ouverture est d, l'angle d'émission θ' satisfaisant l'équation (A) est l'angle par rapport à l'axe Z, et l'angle entre une direction dans laquelle l'angle de rotation autour de l'axe Z par rapport au plan sur lequel la lumière incidente (41) se propage est de 2γ et la lumière d'oscillation qui est incidente sur la surface d'extrémité de fibre et émise depuis la surface d'extrémité de fibre est supérieur à tan-1(d/L).　La présente invention peut ainsi fournir un composant optique et un dispositif laser comprenant un amplificateur à fibre à faible bruit et une base de fixation.
PCT/JP2020/023181 2020-06-12 2020-06-12 Composant optique et dispositif laser à fibre WO2021250885A1 (fr)

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JP2022529985A JP7396480B2 (ja) 2020-06-12 2020-06-12 光部品およびファイバレーザ装置
PCT/JP2020/023181 WO2021250885A1 (fr) 2020-06-12 2020-06-12 Composant optique et dispositif laser à fibre

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001251002A (ja) * 2000-03-03 2001-09-14 Nippon Telegr & Teleph Corp <Ntt> レーザ装置
JP2007334015A (ja) * 2006-06-15 2007-12-27 Nichia Chem Ind Ltd レーザーモジュール
JP2008077071A (ja) * 2006-08-23 2008-04-03 Fujitsu Ltd 光ゲートアレイ装置
JP2012248616A (ja) * 2011-05-26 2012-12-13 Nippon Telegr & Teleph Corp <Ntt> 単結晶ファイバーレーザー装置
JP2013182915A (ja) * 2012-02-29 2013-09-12 Canon Inc 光源装置及びこれを用いた光干渉断層撮像装置
US20170187159A1 (en) * 2015-12-28 2017-06-29 U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration Compact hybrid laser rod and laser system
JP2019202342A (ja) * 2018-05-25 2019-11-28 株式会社アマダホールディングス 加工ヘッド

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08304672A (ja) * 1995-05-01 1996-11-22 Hitachi Ltd 光電子装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001251002A (ja) * 2000-03-03 2001-09-14 Nippon Telegr & Teleph Corp <Ntt> レーザ装置
JP2007334015A (ja) * 2006-06-15 2007-12-27 Nichia Chem Ind Ltd レーザーモジュール
JP2008077071A (ja) * 2006-08-23 2008-04-03 Fujitsu Ltd 光ゲートアレイ装置
JP2012248616A (ja) * 2011-05-26 2012-12-13 Nippon Telegr & Teleph Corp <Ntt> 単結晶ファイバーレーザー装置
JP2013182915A (ja) * 2012-02-29 2013-09-12 Canon Inc 光源装置及びこれを用いた光干渉断層撮像装置
US20170187159A1 (en) * 2015-12-28 2017-06-29 U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration Compact hybrid laser rod and laser system
JP2019202342A (ja) * 2018-05-25 2019-11-28 株式会社アマダホールディングス 加工ヘッド

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