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1. WO2022163245 - OPTICAL RESONATOR AND LASER PROCESSING DEVICE

Publication Number WO/2022/163245
Publication Date 04.08.2022
International Application No. PCT/JP2021/047969
International Filing Date 23.12.2021
Chapter 2 Demand Filed 15.08.2022
IPC
H01S 5/02255 2021.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
022Mountings; Housings
0225Out-coupling of light
02255using beam deflecting elements
H01S 5/14 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
10Construction or shape of the optical resonator
14External cavity lasers
G02B 5/18 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
18Diffracting gratings
CPC
G02B 5/18
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
18Diffraction gratings
H01S 5/02255
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
5Semiconductor lasers
02Structural details or components not essential to laser action
022Mountings; Housings
0225Out-coupling of light
02255using beam deflecting elements
H01S 5/14
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
5Semiconductor lasers
10Construction or shape of the optical resonator ; , e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
14External cavity lasers
Applicants
  • パナソニックホールディングス株式会社 PANASONIC HOLDINGS CORPORATION [JP]/[JP]
Inventors
  • 市橋 宏基 ICHIHASHI, Kouki
Agents
  • 山尾 憲人 YAMAO, Norihito
  • 岡部 英隆 OKABE, Hidetaka
Priority Data
2021-01449401.02.2021JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) OPTICAL RESONATOR AND LASER PROCESSING DEVICE
(FR) RÉSONATEUR OPTIQUE ET DISPOSITIF DE TRAITEMENT AU LASER
(JA) 光共振器及びレーザ加工装置
Abstract
(EN) This optical resonator (2) that resonates a plurality of light beams having mutually different wavelengths comprises a light source (13), a diffraction grating (20), an output coupler (14), and an optical system (25). The light source (13) includes a plurality of light source elements (31, 32, 33) that respectively emit a plurality of light beams. The diffraction grating (20) diffracts each light beam at an angle corresponding to the wavelength of the light beam from each light source element (31, 32, 33). The output coupler (14) reflects a portion of the light beam diffracted in the diffraction grating (20) and returns the portion to the light source (13), and outputs the remaining portion of the light beam. The optical system (25) is arranged between the light source (13) and the diffraction grating (20), collimates each light beam incident from the light source (13) and emits each light beam to the diffraction grating (20). The optical system (25) has a diffraction surface that diffracts each light beam to adjust chromatic aberration across the wavelengths of a plurality of light beams.
(FR) Le résonateur optique (2) selon l'invention, qui fait résonner une pluralité de faisceaux lumineux ayant des longueurs d'onde mutuellement différentes comprend une source de lumière (13), un réseau de diffraction (20), un coupleur de sortie (14) et un système optique (25). La source de lumière (13) comprend une pluralité d'éléments de source de lumière (31, 32, 33) qui émettent respectivement une pluralité de faisceaux lumineux. Le réseau de diffraction (20) diffracte chaque faisceau lumineux selon un angle correspondant à la longueur d'onde du faisceau lumineux provenant de chaque élément de source de lumière (31, 32, 33). Le coupleur de sortie (14) réfléchit une partie du faisceau lumineux diffracté dans le réseau de diffraction (20) et renvoie la partie à la source de lumière (13), et délivre la partie restante du faisceau lumineux. Le système optique (25) est disposé entre la source de lumière (13) et le réseau de diffraction (20), collimate chaque faisceau lumineux incident à partir de la source de lumière (13) et émet chaque faisceau lumineux vers le réseau de diffraction (20). Le système optique (25) a une surface de diffraction qui diffracte chaque faisceau lumineux pour ajuster l'aberration chromatique à travers les longueurs d'onde d'une pluralité de faisceaux lumineux.
(JA) 互いに異なる波長を有する複数の光ビームを共振させる光共振器(2)は、光源(13)と、回折格子(20)と、出力カプラ(14)と、光学系(25)とを備える。光源(13)は、複数の光ビームをそれぞれ発光する複数の光源素子(31、32、33)を含む。回折格子(20)は、各光源素子(31、32、33)からの光ビームの波長に応じた角度において各光ビームを回折する。出力カプラ(14)は、回折格子(20)において回折された光ビームの一部を反射して光源(13)に戻し、当該光ビームの残部を出力する。光学系(25)は、光源(13)と回折格子(20)との間に配置され、光源(13)から入射する各光ビームをそれぞれコリメートして回折格子(20)に出射する。光学系(25)は、複数の光ビームの波長にわたる色収差を調整するように、各光ビームを回折する回折面を有する。
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