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1. WO2020002933 - LASER SYSTEM FOR COHERENTLY COMBINING MULTIPLE LASER SOURCES

Publication Number WO/2020/002933
Publication Date 02.01.2020
International Application No. PCT/GB2019/051831
International Filing Date 27.06.2019
IPC
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
14
characterised by the material used as the active medium
16
Solid materials
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
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
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
0941
of a semiconductor laser, e.g. of a laser diode
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
13
Stabilisation of laser output parameters, e.g. frequency, amplitude
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
08
Construction or shape of optical resonators or components thereof
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
08
Construction or shape of optical resonators or components thereof
081
comprising more than two reflectors
083
Ring 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
09
Processes or apparatus for excitation, e.g. pumping
091
using optical pumping
094
by coherent light
H01S 3/16 (2006.01)
H01S 3/23 (2006.01)
H01S 3/10 (2006.01)
H01S 3/00 (2006.01)
H01S 3/0941 (2006.01)
H01S 3/13 (2006.01)
CPC
H01S 2301/02
H01S 3/005
H01S 3/0071
H01S 3/08031
H01S 3/08045
H01S 3/083
Applicants
  • M SQUARED LASERS LIMITED [GB/GB]; Venture Building, 1 Kelvin Campus West of Scotland Science Park Maryhill Road, Dyce GLASGOW Strathclyde G20 0SP, GB
Inventors
  • MALCOLM, Graeme; GB
  • MAKER, Gareth; GB
  • WEBSTER, Stephen; GB
Agents
  • LINCOLN IP; 9 Victoria Street ABERDEEN Aberdeenshire AB10 1XB, GB
Priority Data
1810706.029.06.2018GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LASER SYSTEM FOR COHERENTLY COMBINING MULTIPLE LASER SOURCES
(FR) SYSTÈME LASER POUR COMBINER DE MANIÈRE COHÉRENTE DE MULTIPLES SOURCES LASER
Abstract
(EN)
A method and system for combining two or more optical fields is disclosed. A first continuous-wave high powered output field generated by a solid-state master laser is injected into a first solid state optical amplifier to produce a single output field from the laser system that exhibits a high phase-coherence with the output field of the master laser. The power of the output field equals the sum of powers of the master laser and that generated by the first optical amplifier, while exhibiting similar beams characteristics to that produced by the output field of the master laser i.e. it exhibits low noise, in a single transverse and longitudinal mode Gaussian beam, and has a single polarisation. The laser system is highly scalable in that N optical amplifiers may be located in series with the master laser to provide a single low noise, high power output field.
(FR)
L'invention concerne un procédé et un système pour combiner au moins deux champs optiques. Un premier champ de sortie haute puissance à onde continue généré par un laser maître à solides est injecté dans un premier amplificateur optique à l'état solide pour produire un champ de sortie unique par le système laser qui présente une cohérence de phase élevée avec le champ de sortie du laser maître. La puissance du champ de sortie est égale à la somme des puissances du laser maître et de celle générée par le premier amplificateur optique, tout en présentant des caractéristiques de faisceaux similaires à celles produites par le champ de sortie du laser maître, c'est-à-dire qu'elle présente un faible bruit, dans un seul faisceau gaussien à mode transversal et longitudinal, et présente une seule polarisation. Le système laser est hautement évolutif en ce que N amplificateurs optiques peuvent être placés en série avec le laser maître pour fournir un champ de sortie à faible bruit et haute puissance.
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