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1. WO2020002569 - LASER SYSTEM FOR GENERATING LASER PULSES

Publication Number WO/2020/002569
Publication Date 02.01.2020
International Application No. PCT/EP2019/067284
International Filing Date 28.06.2019
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
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
082
defining a plurality of resonators, e.g. for mode selection
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
11
in which the quality factor of the optical resonator is rapidly changed, i.e. giant-pulse technique
117
using an acousto-optical device
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
11
in which the quality factor of the optical resonator is rapidly changed, i.e. giant-pulse technique
115
using an electro-optical device
H01S 3/082 (2006.01)
H01S 3/117 (2006.01)
H01S 3/23 (2006.01)
H01S 3/115 (2006.01)
CPC
H01S 3/082
H01S 3/115
H01S 3/117
H01S 3/2308
Applicants
  • TRUMPF SCHWEIZ AG [CH/CH]; Trumpf Strasse 8 7214 Gruesch, CH
Inventors
  • SEIFERT, Albert; CH
Agents
  • KOHLER SCHMID MÖBUS PATENTANWÄLTE PARTNERSCHAFTSGESELLSCHAFT MBB; Gropiusplatz 10 70563 Stuttgart, DE
Priority Data
18180659.729.06.2018EP
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) LASERSYSTEM ZUR ERZEUGUNG VON LASERPULSEN
(EN) LASER SYSTEM FOR GENERATING LASER PULSES
(FR) SYSTÈME LASER POUR PRODUIRE DES IMPULSIONS LASER
Abstract
(DE)
Die Erfindung betrifft ein Lasersystem (1) zur Erzeugung von Laserpulsen, umfassend: einen Hauptresonator (2) mit einem Hauptresonator-Strahlengang (6), in dem ein laseraktives Medium (4), insbesondere ein laseraktives Festkörpermedium, und ein optischer Modulator (5) angeordnet sind, einen Hilfsresonator (3) zur Begrenzung einer Verstärkung (g) des laseraktiven Mediums (4) des Hauptresonators (2), wobei ein Hilfsresonator-Strahlengang (14) und der Hauptresonator-Strahlengang (6) einen gemeinsamen Resonatorabschnitt (15) aufweisen, in dem das laseraktive Medium (4) angeordnet ist. Der Hilfsresonator (3) weist eine vorgegebene Schwelleninversion (NC.A) auf, die um mindestens 10%, bevorzugt um mindestens 20%, insbesondere um mindestens 50% größer ist als eine minimale Schwelleninversion (NC.H) des Hauptresonators (2).
(EN)
The invention relates to a laser system (1) for generating laser pulses, comprising: a main resonator (2) having a main resonator beam path (6), in which a laser-active medium (4), in particular a laser-active solid-state medium, and an optical modulator (5) are arranged, an auxiliary resonator (3) for limiting a gain (g) of the laser-active medium (4) of the main resonator (2), wherein an auxiliary resonator beam path (14) and the main resonator beam path (6) have a common resonator section (15), in which the laser-active medium (4) is arranged. The auxiliary resonator (3) has a predefined threshold inversion (NC.A) that is greater than a minimum threshold inversion (NC.H) of the main resonator (2) by at least 10%, preferably by at least 20%, in particular by at least 50%.
(FR)
La présente invention concerne un système laser (1) pour produire des impulsions laser comprenant : un résonateur principal (2) comprenant un chemin optique (6) de résonateur principal, dans lequel sont disposés un milieu actif de laser (4), en particulier un milieu actif de laser de corps solide et un modulateur optique (5), un résonateur auxiliaire (3) pour limiter une amplification (g) du milieu actif de laser (4) du résonateur principal (2), un chemin optique (14) de résonateur auxiliaire et le chemin optique (6) de résonateur principal présentant une partie de résonateur commune (15) dans laquelle est disposé le milieu actif de laser (4). Le résonateur auxiliaire (3) présente une inversion d'onde (NC.A) prédéterminée représentant au moins 10 %, de préférence au moins 20 %, en particulier au moins 50 % de plus qu'une inversion d'onde (NC.H) minimale du résonateur principal (2).
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