EP4627683A1 - Lasermedium-anordnung und laser-system - Google Patents
Lasermedium-anordnung und laser-systemInfo
- Publication number
- EP4627683A1 EP4627683A1 EP23793368.4A EP23793368A EP4627683A1 EP 4627683 A1 EP4627683 A1 EP 4627683A1 EP 23793368 A EP23793368 A EP 23793368A EP 4627683 A1 EP4627683 A1 EP 4627683A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laser
- structural elements
- type
- active material
- laser medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06737—Fibre having multiple non-coaxial cores, e.g. multiple active cores or separate cores for pump and gain
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/08022—Longitudinal modes
- H01S3/08027—Longitudinal modes by a filter, e.g. a Fabry-Perot filter is used for wavelength setting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/08022—Longitudinal modes
- H01S3/08031—Single-mode emission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/0804—Transverse or lateral modes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/17—Solid materials amorphous, e.g. glass
Definitions
- the invention relates to a laser medium arrangement for generating or amplifying laser light by stimulated emission of photons and to a laser system with such a laser medium arrangement.
- the laser medium serves to provide a population inversion in order to enable a stimulated emission of photons and thus light amplification.
- the population inversion is brought about by supplying the laser medium with energy via a pump source.
- an optical resonator can be used in which the light is reflected several times, whereby a direction of the generated laser light can also be defined.
- random lasers can be used to achieve homogeneous, speckle-free illumination. Random lasers generally use disordered laser media, and the light is returned to increase the light path in the laser medium, not through a resonator, but rather through scattering structures in the laser medium. This increases the time the photons spend in the laser medium, so that laser activity can occur. However, random lasers typically do not have a preferred direction for the emitted light and therefore do not generally provide directed laser light.
- random fiber lasers are known in which, for example, scattering structures are provided in an optical fiber and serve to return the light.
- the inclusion of light in the optical fiber leads to the emission of directed light, but this can also lead to speckle artifacts and thus to inhomogeneous illumination.
- One object of the invention is to provide a laser medium which, on the one hand, enables a directed emission of light and, on the other hand, a homogeneous illumination, with a particular aim of reducing or avoiding speckle artifacts.
- One aspect of the object of the invention is to achieve these properties inherently through the laser medium itself. enable, i.e. in particular without additional mode mixers or the like.
- a further object of the invention is to provide a laser system which has the above-mentioned properties of directed and homogeneous, low-speckle light emission, and preferably furthermore to provide a laser system in which at least the homogeneity and speckle resilience of the illumination can be adjusted to be reduced.
- the invention relates to a laser medium arrangement for generating or amplifying laser light by stimulated emission of photons.
- the laser medium arrangement defines a longitudinal direction and a cross-section running transversely to the longitudinal direction, wherein the laser medium arrangement thus in particular defines a preferred direction for light propagation, which preferably runs along the longitudinal direction.
- the laser medium arrangement comprises a plurality of structural elements which each extend along the longitudinal direction and partially over the cross section, wherein at least two different types of structural elements are included, namely a first type with a first refractive index and a second type with a second refractive index.
- the included plurality of structural elements can therefore comprise at least one structural element of the first type and one or more structural elements of the second type, or conversely one or more structural elements of the first type and one structural element of the second type, or also comprise several structural elements of the first type as well as several structural elements of the second type.
- more than two different types, e.g. three different types of structural elements, can also be included.
- At least one of the structural elements comprises a laser-active material.
- a laser-active material comprises several or all structural elements of one type or several or all structural elements of several types.
- the laser medium arrangement has a feedback device which is designed to partially feed the generated laser light back into the laser-active material.
- the feedback device serves in particular to provide optical feedback so that the photons pass through the laser-active material long enough to achieve macroscopic amplification.
- the laser medium arrangement has two front ends which limit the extension of the laser medium arrangement along the longitudinal direction, wherein the front ends are preferably designed to return the generated laser light proportionally into the laser-active material, in particular in that the front ends form end surfaces which run perpendicular to the longitudinal direction and/or are mirrored.
- the laser medium arrangement, in particular the structural elements, in particular the laser-active material comprises embedded light-scattering structures which are designed to proportionally return the generated laser light to the laser-active material.
- the laser medium arrangement comprises an optical resonator which surrounds the front ends and is designed to partially return the generated laser light into the laser-active material.
- an optical resonator can in particular comprise two mirrors, at least one of these mirrors being partially transparent in order to guide laser light out of the resonator, and is referred to as an external resonator in the context of the present disclosure.
- the feedback device comprising at least one of the following properties: fiber Bragg grating, dielectric coating of the front ends, highly reflective coating (HR), partially reflective coating (PR) and/or anti-reflective coating (AR).
- HR highly reflective coating
- PR partially reflective coating
- AR anti-reflective coating
- the front ends can be bevelled, especially in the case of an externally formed resonator. This design helps to prevent an internal resonator that can interfere with the external resonator. This design can also be useful for a random laser.
- the front ends can have an angle other than 90 ° to the longitudinal axis, for example they can be arranged at the Brewster angle with respect to the light propagating in the resonator.
- the gain bandwidth AX is a measure of the wavelength range in which incident light in the medium can in principle be amplified by stimulated emission. It is a property of the laser medium and is dominated by the laser-active ion and the host material.
- the resonator defines longitudinal modes via its geometric boundary conditions, which restrict the number of possible emission wavelengths, since for constructive interference after one revolution in the resonator, a multiple of 2n phase delay is preferred and in some cases even necessary.
- the resonator length is a multiple of half the wavelength.
- the quality of the resonator defines how narrow-band an individual resonance peak is.
- a plurality of transverse modes can be excited in the laser medium arrangement and the laser medium arrangement, in particular the structural elements, in particular their geometry and/or arrangement in the cross section of the laser medium arrangement are designed such that such a plurality of transverse modes can be excited.
- the laser medium arrangement is configured to guide light along the longitudinal direction of the laser medium arrangement and to optically confine it transversely to the longitudinal direction.
- the laser medium arrangement can in particular be designed to transmit light transversely to the longitudinal direction in a localized manner, in particular to transmit it with a spatial resolution in the cross section of the laser medium arrangement such that the laser medium arrangement forms an image guide.
- the spatial resolution may preferably be higher than 5 line pairs per mm (Ip/mm), more preferably higher than 10 Ip/mm, or higher than 25 Ip/mm, or higher than 50 Ip/mm, or higher than 100 Ip/mm, or higher than 150 Ip/mm, or higher than 200 Ip/mm.
- the structural elements in particular their cross-sectional regions, are arranged non-uniformly in order to bring about a transverse Anderson localization transverse to the longitudinal direction.
- the non-uniform arrangement can, for example, be a random arrangement, but non-random non-uniform arrangements are also possible, as will be explained in more detail below.
- a structural element of the first type and a plurality of structural elements of the second type are included.
- the plurality of structural elements therefore includes in particular exactly one structural element of the first type.
- the structural element of the first type is in particular designed as a, for example, monolithic, base body with or made of a first medium, wherein the first medium has the first refractive index.
- the structural elements of the second type can be designed as cavities in the base body, wherein the cavities preferably form the second refractive index, e.g. by the refractive index of air or a gas which is Medium can be located in the cavities, or are filled with a second medium, in particular a solid, wherein the second medium has the second refractive index.
- the structural elements of the first type can be designed as bodies, in particular rod-shaped or tubular, with or made of a first medium, the first medium having the first refractive index.
- the structural elements of the second type can in this case be designed as bodies, in particular rod-shaped or tubular, with or made of a second medium, the second medium having the second refractive index and/or as cavities in the structural elements of the first type, the cavities preferably forming the second refractive index or being filled with a second medium, in particular a solid, the second medium having the second refractive index.
- the structural elements of the second type are present as filled cavities in the structural elements of the first type
- the structural elements can be designed as core-shell systems, such that the core corresponds to the filled cavity.
- Rod-shaped or tubular bodies do not exclusively refer to those with a round cross-sectional geometry.
- at least one of the structural elements of the laser medium arrangement comprises a laser-active material.
- At least one structural element of the first type preferably the structural elements of the first type, particularly preferably the first medium, can comprise the laser-active material.
- the laser medium arrangement comprises two different laser-active materials
- at least one structural element of the second type preferably the structural elements of the second type, particularly preferably the second medium, comprises a further, different laser-active material.
- At least one structural element of the second type preferably the structural elements of the second type, particularly preferably the second medium, can comprise the laser-active material.
- the laser-active material comprises a multicomponent glass, phosphate glass, fluorophosphate glass, silicate glass or quartz glass as host material, which comprises a doping with ions of at least one transition metal and/or a rare earth, in particular with 4f n ground state.
- the other laser-active material may comprise a crystalline or amorphous solid, in particular a glass, as host material with a foreign ion doping.
- the laser medium arrangement can comprise a plurality of structural elements of the first type, which are designed as, in particular, rod-shaped or tubular, bodies with or made of a first medium, in particular glass, which has the first refractive index and comprises the laser-active material.
- a plurality of structural elements of the second type can be included, which are designed as, in particular, rod-shaped or tubular, bodies with or made of a second medium, in particular glass, which has the second refractive index and optionally comprises a further, different laser-active material.
- the laser medium arrangement can comprise a plurality of structural elements of the first type, which are designed as, in particular rod-shaped or tubular, bodies with or made of a first medium, in particular glass, which has the first refractive index.
- a plurality of structural elements of the second type can be included, which are designed as cavities in the structural elements of the first type, which are filled with a second medium, in particular glass, which has the second refractive index and comprises the laser-active material.
- the first refractive index of the structural elements of the first type and the second refractive index of the structural elements of the second type differ by at least , in particular by at least 0.1, in particular by at least 0.2, in particular at least 0.3, in particular at least 0.4.
- a refractive index difference of at least 0.05 or preferably at least 0.075 is also possible.
- a multi-component glass can be used as the material of one or more structural elements.
- At least one cross-sectional region has a diameter of 100 nm to 50 pm, preferably 400 nm to 20 pm, particularly preferably 500 nm to 2000 nm.
- a cross-sectional region has a non-circular or polygonal, for example pentagonal or hexagonal, geometry.
- the structural elements in particular their cross-sectional regions, preferably have a non-uniform arrangement, whereby such a non-uniform arrangement can in particular be random.
- the arrangement is non-uniform but determined by a predetermined rule, i.e. is not random.
- the uneven arrangement of the structural elements, in particular their cross-sectional regions, can be designed in particular as follows:
- the invention further relates to a laser system with a laser medium arrangement as described above, at least one pump source for optically exciting the laser-active material, and an output point for coupling out the generated laser light.
- the laser system in particular the pump source, is set up in such a way that only one A defined part of the cross-section of the laser medium arrangement can be excited via the pump source in order to reduce the spatial incoherence of the outcoupled laser light or to increase the spatial coherence of the outcoupled laser light.
- the laser system can preferably be designed and/or comprise means such that the defined part of the cross-section can be varied so that the spatial coherence of the coupled-out laser light can be adjusted.
- the invention further relates to a method for generating or amplifying laser light by stimulated emission of photons, wherein a laser medium arrangement as described above is provided, wherein the Laser medium arrangement comprises a plurality of structural elements, each of which comprises laser-active material, and wherein a pump source is provided for optically exciting the laser-active material and the laser-active material is excited by means of the pump source, wherein laser-active material is excited simultaneously within a plurality of structural elements, in particular in order to generate laser light with spatial incoherence and/or wherein laser-active material is not excited in at least one structural element, preferably an adjustable plurality of structural elements, in particular in order to reduce the spatial incoherence of the laser light and/or wherein a defined part of the cross section of the laser medium arrangement is excited via the pump source, in particular in such a way that the transverse profile of the laser light corresponds to the geometry of the excited defined part of the cross section.
- Fig. 1 is a schematic representation of a laser system with a laser medium arrangement with an optical resonator and a pump source for optically exciting the laser-active material
- Fig. 4 schematic perspective views of two laser medium arrangements with (a) two types of structural elements whose cross-sectional areas are arranged unevenly distributed on a grid and (b) a plurality of structural elements with uneven refractive indices (multiplicity of types) and/or uneven geometries (diameters),
- Fig. 8 schematic illustration of various other possibilities for laser medium arrangements with unevenly arranged structural elements or their cross-sectional regions, wherein the laser medium arrangements each comprise a plurality of structural elements of a first type and a plurality of structural elements of a second type and possibly other types
- Fig. 1 shows a laser system 100 with a laser medium arrangement 1, which comprises an optical resonator 300, a pump source 200 and a coupling-out point 400, which in this case is formed by a partially transparent mirror of the optical resonator 300.
- a laser medium arrangement 1 which comprises an optical resonator 300, a pump source 200 and a coupling-out point 400, which in this case is formed by a partially transparent mirror of the optical resonator 300.
- Fig. 2 again shows the laser medium arrangement 1, which extends along the longitudinal direction 5 from one front end 2 to the other front end 4, wherein the front end 2 can be seen in cross section.
- the structural elements 10 extend over the cross section of the laser medium arrangement 1 in such a way that a plurality of cross-sectional regions 20 are defined in the cross section of the laser medium arrangement 1, each of which corresponds to the cross section of an individual structural element 10.
- each structural element 10 forms and/or occupies a part of the cross-sectional area of the laser medium arrangement 1 and this part is referred to as the cross-sectional regions 20 of the structural element 10.
- the cross-sectional regions 20 of the structural elements have a non-uniform arrangement in that the cross-sectional regions of the structural elements of the second type 10b, which comprise the laser-active material, are arranged aperiodically.
- a laser system 100 or its pump source 200 can be set up in such a way that only a defined part 7 of the cross section of the laser medium arrangement 1 can be excited or is excited.
- laser activity can be generated only in a part of the structural elements of the second type 10b, which comprise the laser-active material, whereby the spatial incoherence of the coupled-out laser light can be reduced.
- the defined part 7 of the cross section can also be varied so that the spatial incoherence of the coupled-out laser light can be adjusted.
- the defined part 7 of the cross section can correspond to the pump light spot.
- the cross-sectional region 20 of the structural element of the first type 10a in this case corresponds to the cross-sectional area of the laser medium arrangement minus the holes defined by the cavities in this area, while the cross-sectional regions 20 of the structural elements of the second type 10b each correspond to the cross-sectional area of the cavities.
- the cavities in the base body can also be filled with a second material such that the structural elements of the second type 10b correspond to the filled cavities.
- the cross-sectional regions 20 of the structural elements of the second type 10b are non-uniform in that their positions are non-uniformly distributed over the cross section, in particular they do not lie on a periodic grid.
- the structural element 10a designed as a base body can comprise the laser-active material.
- the laser medium arrangement shown in cross section in Fig. 3 (b) also has two types 10a, 10b of structural elements, namely again exactly one structural element 10a designed as a base body with a first refractive index, and a plurality of structural elements 10b with a second refractive index that differs therefrom.
- the cross-sectional regions 20 of the structural elements of the second type 10b are not only arranged unevenly, but also have uneven geometries, in this case uneven diameters, in which case there is a limited number, namely two, different diameters.
- the structural element 10a to comprise the laser-active material.
- the structural elements 10b can comprise laser-active material, with different laser-active materials preferably being provided for the two types.
- structural elements, with the cross-sectional regions of the Structural elements of the second type 10b are each arranged within a structural element of the first type 10a, in particular as core-cladding systems.
- a plurality of structural elements of the first type 10a and a plurality of structural elements of the second type 10b are provided.
- the structural elements or their cross-sectional regions are non-uniformly designed in such a way that the structural elements of the first type 10a (which accommodate the structural elements of the second type 10b) are arranged non-uniformly, in particular aperiodically, across the cross-section of the laser medium arrangement.
- the structural elements 10a forming the cladding to comprise the laser-active material.
- the structural elements 10b forming the core can comprise laser-active material, wherein preferably different laser-active materials are provided for the two types.
- the laser medium arrangements shown in cross-section in Fig. 3 (d) and (e) correspond in some aspects to the laser medium arrangements shown in Fig. 3 (a) and (b) respectively, but have structural elements of three types 10a, 10b, 10c with different refractive indices.
- cavities in the structural element 10a designed as a base body can be filled with different media.
- the structural element 10a to comprise the laser-active material.
- the structural elements 10b and/or 10c to comprise the laser-active material.
- both the structural element 10a and the structural elements 10b can also be and/or 10c comprise laser-active material, wherein preferably different laser-active materials are provided for the different types.
- arrangement is to be understood here to mean that the or some of the structural elements or their cross-sectional regions are positioned aperiodically.
- the structural elements 10b of the second type have a uniform refractive index, have uniform geometries and/or are formed uniformly with regard to other aspects, in particular are formed identically. In this case, one can speak of a uniform occupancy of the aperiodic positions.
- a first type of structural element can have a first refractive index and a first diameter and a second type of structural element can have a second refractive index and a second diameter (bottom row , second column ); or a first type of structural element can have a core-cladding system with a core with a first diameter and a second type of structural element can have a core-cladding system with a core with a second diameter (bottom row , third column ); or a first type of structural element can have a core-cladding system with a core with a first refractive index and a second type of structural element can have a core-cladding system with a core with a second refractive index (bottom row , fourth column ); or a first type of structural element can have a first diameter and a rotation about a pivot point located outside the structural element and a second type of structural element can have a second diameter and a Rotation about a pivot point lying outside the structural element (bottom row, fifth column), or a first type of
- laser-active media can be used in particular as optical amplifier systems.
- a pump source generates a population inversion in the laser-active medium used as an amplifier.
- the light to be amplified comes from an external source
- Laser system 100 is emitted and is in the form shown in Figure 9 on The laser medium arrangement 1 shown on the right-hand side preferably amplified unidirectionally.
- An equally possible amplification of spontaneously emitted photons (ASE - amplified spontaneous emission) is merely a parasitic effect.
- a laser system arrangement 500 comprising a first laser system 100 disclosed here, in particular as a master oscillator 501, and a laser medium arrangement 1 disclosed here, in particular as a power amplifier 502, in which laser light generated by the laser system 100 by stimulated emission of photons is guided into the laser medium arrangement 1 and is amplified in the laser medium arrangement 1 by stimulated emission of photons.
- the laser system arrangement 500 and in particular its laser system 100 can be operated in continuous operation.
- the laser system arrangement 500 and in particular its laser system 100 are operated in a pulsed manner.
- the light to be amplified, in particular seed light, emitted by the master or seed laser 501 is then highly amplified in the power stage decoupled from it, the power amplifier 502 described above, see Figure 9, which usually has different requirements than the master oscillator 501, e.g. with regard to power stability.
- Examples of such arrangements are trapezoidal amplifiers or fiber amplifiers.
- a laser medium arrangement 1 used here according to the present invention allows this in a particularly advantageous manner due to the high mode density and the associated transversely localized optical amplification.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022132112.6A DE102022132112A1 (de) | 2022-12-02 | 2022-12-02 | Lasermedium-Anordnung und Laser-System |
| PCT/EP2023/079240 WO2024115008A1 (de) | 2022-12-02 | 2023-10-20 | Lasermedium-anordnung und laser-system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4627683A1 true EP4627683A1 (de) | 2025-10-08 |
Family
ID=88506629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23793368.4A Pending EP4627683A1 (de) | 2022-12-02 | 2023-10-20 | Lasermedium-anordnung und laser-system |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4627683A1 (de) |
| JP (1) | JP2025536297A (de) |
| KR (1) | KR20250107889A (de) |
| CN (1) | CN120239936A (de) |
| DE (1) | DE102022132112A1 (de) |
| WO (1) | WO2024115008A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566196A (en) * | 1994-10-27 | 1996-10-15 | Sdl, Inc. | Multiple core fiber laser and optical amplifier |
| DE69917776D1 (de) * | 1998-06-09 | 2004-07-08 | Crystal Fibre As Birkerod | Faser mit photonischer bandlücke |
| US20030202770A1 (en) * | 2002-01-03 | 2003-10-30 | Garito Anthony F. | Optical waveguide amplifiers |
| JPWO2008133242A1 (ja) * | 2007-04-25 | 2010-07-29 | 株式会社フジクラ | 希土類添加コア光ファイバ |
| EP2837072B1 (de) * | 2012-04-12 | 2020-12-23 | Fraunhofer Gesellschaft zur Förderung der Angewand | Verfahren und vorrichtung zur reduktion von modeninstabilität in einem lichtwellenleiter |
| EP3368928A2 (de) * | 2015-10-28 | 2018-09-05 | Corning Incorporated | Mehradrige glasfaser mit randomisierter aderstruktur |
| JP6998311B2 (ja) * | 2016-02-05 | 2022-02-04 | ニューファーン | 光ファイバシステム |
| US20220337020A1 (en) * | 2019-09-26 | 2022-10-20 | Nippon Telegraph And Telephone Corporation | Optical amplifier |
| DE102020116444A1 (de) * | 2020-06-22 | 2021-12-23 | Schott Ag | Wellenleiter und Verfahren zur Herstellung eines Wellenleiters |
-
2022
- 2022-12-02 DE DE102022132112.6A patent/DE102022132112A1/de active Pending
-
2023
- 2023-10-20 EP EP23793368.4A patent/EP4627683A1/de active Pending
- 2023-10-20 JP JP2025522046A patent/JP2025536297A/ja active Pending
- 2023-10-20 KR KR1020257018995A patent/KR20250107889A/ko active Pending
- 2023-10-20 CN CN202380083273.4A patent/CN120239936A/zh active Pending
- 2023-10-20 WO PCT/EP2023/079240 patent/WO2024115008A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022132112A1 (de) | 2024-06-13 |
| WO2024115008A1 (de) | 2024-06-06 |
| KR20250107889A (ko) | 2025-07-14 |
| JP2025536297A (ja) | 2025-11-05 |
| CN120239936A (zh) | 2025-07-01 |
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