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1. (WO2018158261) LASER SOURCE FOR EMITTING A GROUP OF PULSES
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Pub. No.: WO/2018/158261 International Application No.: PCT/EP2018/054829
Publication Date: 07.09.2018 International Filing Date: 27.02.2018
IPC:
H01S 3/067 (2006.01) ,H01S 3/00 (2006.01) ,H01S 3/094 (2006.01) ,H01S 3/10 (2006.01) ,G01N 21/71 (2006.01) ,H01S 3/23 (2006.01) ,G01J 3/42 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
05
Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06
Construction or shape of active medium
063
Waveguide lasers, e.g. laser amplifiers
067
Fibre lasers
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
09
Processes or apparatus for excitation, e.g. pumping
091
using optical pumping
094
by coherent light
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
10
Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
62
Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
71
thermally excited
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
23
Arrangement of two or more lasers not provided for in groups H01S3/02-H01S3/14113
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28
Investigating the spectrum
42
Absorption spectrometry; Double-beam spectrometry; Flicker spectrometry; Reflection spectrometry
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE [FR/FR]; 3, rue Michel Ange 75016 PARIS, FR
INSTITUT NATIONAL DES SCIENCES APPLIQUÉES - ROUEN [FR/FR]; Avenue de l'Université, BP 8 76801 ST ETIENNE DU ROUVRAY, FR
UNIVERSITÉ DE ROUEN NORMANDIE [FR/FR]; 1 rue Thomas Becket MONT-SAINT-AIGNAN, 76821, FR
Inventors:
HIDEUR, Ammar; FR
HABOUCHA, Adil; FR
BULTEL, Arnaud; FR
IDLAHCEN, Said; FR
GODIN, Thomas; FR
Agent:
PRIORI, Enrico; FR
Priority Data:
175165328.02.2017FR
Title (EN) LASER SOURCE FOR EMITTING A GROUP OF PULSES
(FR) SOURCE LASER POUR L'EMISSION D'UN GROUPE D'IMPULSIONS
Abstract:
(EN) According to one aspect, the present description relates to a laser source for emitting a group of pulses, comprising: a primary laser source (22) that is suitable for emitting at least one primary laser pulse; at least one interferometer (24) that is suitable for forming, from said primary laser pulse, a plurality of secondary lases pulses, each interferometer comprising at least one delay line allowing two secondary laser pulses to be temporally separated by a delay comprised between 50 ps and 10 ns; and a single-mode amplifying optical fibre that is intended to receive the secondary laser pulses, in order to form, as output, a group of pulses that are spatially superposed.
(FR) Selon un aspect, la présente description concerne une source laser pour l'émission d'un groupe d'impulsions comprenant : une source laser primaire (22) adaptée pour l'émission d'au moins une impulsion laser primaire; au moins un interféromètre (24) adapté pour la formation, à partir de ladite impulsion laser primaire, d'une pluralité d'impulsions laser secondaires, chaque interféromètre comprenant au moins une ligne à retard permettant de séparer temporellement deux impulsions laser secondaires, d'un délai compris entre 50 ps et 10 ns; et une fibre optique amplificatrice monomode destinée à recevoir les impulsions laser secondaires, pour former en sortie un groupe d'impulsions superposées spatialement.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)