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1. CN109687270 - Fiber laser

Office
Chine
Numéro de la demande 201910085718.8
Date de la demande 29.01.2019
Numéro de publication 109687270
Date de publication 26.04.2019
Type de publication A
CIB
H01S 3/067
HÉLECTRICITÉ
01ÉLÉMENTS ÉLECTRIQUES FONDAMENTAUX
SDISPOSITIFS UTILISANT LE PROCÉDÉ D'AMPLIFICATION DE LA LUMIÈRE PAR ÉMISSION STIMULÉE DE RAYONNEMENT POUR AMPLIFIER OU GÉNÉRER DE LA LUMIÈRE; DISPOSITIFS UTILISANT L’ÉMISSION STIMULÉE DE RAYONNEMENT ÉLECTROMAGNÉTIQUE DANS DES GAMMES D’ONDES AUTRES QU'OPTIQUES
3Lasers, c. à d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, le visible ou l’ultraviolet
05Structure ou forme de résonateurs; Accommodation de milieu actif à l'intérieur de ces résonateurs; Forme du milieu actif
06Structure ou forme du milieu actif
063Lasers à guide d'ondes, p.ex. amplificateurs laser
067Lasers à fibre optique
CPC
H01S 3/06716
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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
06716Fibre compositions
H01S 3/06733
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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
06729Peculiar transverse fibre profile
06733Fibre having more than one cladding
H01S 3/06758
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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
06754Fibre amplifiers
06758Tandem amplifiers
Déposants SHENZHEN JPT OPTO-ELECTRONICS CO., LTD.
深圳市杰普特光电股份有限公司
Inventeurs ZHOU HUANXIAN
周焕先
ZHU JIANGJIE
朱江杰
QIANG RUIRONG
强瑞荣
Mandataires 广州华进联合专利商标代理有限公司 44224
Titre
(EN) Fiber laser
(ZH) 光纤激光器
Abrégé
(EN)
The invention provides a fiber laser, which includes a seed source for outputting an initial laser, a first stage amplifier for preamplification, a second stage amplifier for second amplification, anda third stage amplifier for third amplification. The first stage amplifier includes a first active optical fiber, a first beam combiner and a first pumping source, a passive optical fiber, the firstactive optical fiber, and the first beam combiner are connected between the seed source and the second stage amplifier, the first pumping source is connected with the first beam combiner, the second stage amplifier includes a second active optical fiber, a second beam combiner and a second pumping source, and the second active optical fiber and the second beam combiner are connected between the first stage amplifier and the third stage amplifier. By amplifying the initial laser multiple times, at the same target power, the overall gain is distributed to the first stage amplifier, the second stage amplifier and the third stage amplifier, the individual gain of each stage is lowered, thus the effects of spontaneous radiation and photon darkening of each amplification stage are lowered, and the service life is prolonged advantageously.

(ZH)
一种光纤激光器,包括用于输出初始激光的种子源、用于预放大的第一级放大器、用于第二次放大的第二级放大器、及用于第三次放大的第三级放大器;第一级放大器包括第一有源光纤、第一合束器、及第一泵浦源;无源光纤、第一有源光纤、及第一合束器连接在种子源与第二级放大器之间;第一泵浦源连接第一合束器;第二级放大器包括第二有源光纤、第二合束器、及第二泵浦源;第二有源光纤及第二合束器连接在第一级放大器与第三级放大器之间。通过对初始激光进行多次放大,在相同的目标功率下,总增益分别分配到第一级放大器、第二级放大器、第三级放大器上,降低了各级的单独增益,从而降低了各放大级的自发辐射及光子暗化的影响,有利于提高工作寿命。

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