WO2007056999A2 - Systeme de laser a corps solide et procede permettant son fonctionnement - Google Patents

Systeme de laser a corps solide et procede permettant son fonctionnement Download PDF

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Publication number
WO2007056999A2
WO2007056999A2 PCT/DE2006/002027 DE2006002027W WO2007056999A2 WO 2007056999 A2 WO2007056999 A2 WO 2007056999A2 DE 2006002027 W DE2006002027 W DE 2006002027W WO 2007056999 A2 WO2007056999 A2 WO 2007056999A2
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WO
WIPO (PCT)
Prior art keywords
laser
solid
laser diode
pulsed excitation
excitation beams
Prior art date
Application number
PCT/DE2006/002027
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German (de)
English (en)
Other versions
WO2007056999A3 (fr
Inventor
Stephan Strohmaier
Hans Joachim Eichler
Klaus Petermann
Günter Huber
Original Assignee
Technische Universität Berlin
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE200510060487 external-priority patent/DE102005060487A1/de
Application filed by Technische Universität Berlin filed Critical Technische Universität Berlin
Publication of WO2007056999A2 publication Critical patent/WO2007056999A2/fr
Publication of WO2007056999A3 publication Critical patent/WO2007056999A3/fr

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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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
    • H01S3/09415—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/0602—Crystal lasers or glass lasers
    • H01S3/061—Crystal lasers or glass lasers with elliptical or circular cross-section and elongated shape, e.g. rod
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094049—Guiding of the pump light
    • H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094076—Pulsed or modulated 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
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
    • 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
    • H01S3/163—Solid materials characterised by a crystal matrix
    • H01S3/164—Solid materials characterised by a crystal matrix garnet
    • 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
    • H01S3/163—Solid materials characterised by a crystal matrix
    • H01S3/164—Solid materials characterised by a crystal matrix garnet
    • H01S3/1643—YAG
    • 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
    • H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
    • H01S3/2308—Amplifier arrangements, e.g. MOPA

Definitions

  • the invention relates to a solid-state laser system and a method for operating the solid state lasersy stems.
  • Solid state laser systems can be divided into systems having a transverse or a longitudinal pumping configuration.
  • energy in the form of light is coupled into the laser-active material. This is usually done by means of continuous discharge lamps and flashlamps or by means of continuous (cw) laser diodes.
  • Commercially available lamp-pumped laser systems deliver average output powers up to the kW range and pulse energies of over 100 mJ with total efficiencies of 2 to 5%.
  • the power or energy of the pump / excitation laser radiation is converted to more than 30% in solid state laser radiation.
  • the achievable pulse energies are usually only in the range of .mu.J to a few mJ, since the pump sources in the range of the life of the upper laser level of the laser-active material can provide little pumping energy.
  • Transversely pumped bar lasers are known. This concept was adopted by older lamp-pumped laser systems. In the transverse construction, the pump energy is coupled from the side into a rod made of the laser-active material. This allows the coupling of high average power, but leads to relatively low efficiencies. The diode pump light is converted to about 20% in laser radiation. The efficiency is even lower in the known bar lasers, if by means of mode apertures a good beam quality is enforced. Compared to the lamp-pumped systems, there is the advantage that the tuning between the wavelength of the pump source and the absorption of the laser-active material can be improved with the laser diode as the pump source. It must therefore be dissipated less heat, whereby thermal problems are reduced. In addition, a significantly better beam quality is achieved.
  • Solid state laser systems are also known in which a longitudinal pump configuration is formed so that the excitation beams are coupled along the optical axis of the laser beams.
  • the pump excitation beam volume can be adapted to the mode volume of the laser beam, whereby, for example, in a Nd: YAG laser system, a high efficiency of up to about 50% with good beam quality can be achieved.
  • a continuous excitation radiation (cw radiation) of the laser diodes is used.
  • a pulse operation is achieved by means of additional Q-switching.
  • the pulse output energies thus achieved are at most about 1 mJ.
  • a pulsed Nd: YAG solid-state laser system can achieve a maximum output energy of approximately 10 mJ and pulse durations of less than 200 ⁇ s.
  • the so-called slab laser is still known.
  • the laser-active material is provided in the form of a slab, for example, having the dimensions 16 mm ⁇ 8 mm ⁇ 3 mm
  • a particular advantage of the slab laser is that good power scalability is maintained at a high level
  • heat can be dissipated well and the adaptability to pump sources is advantageous, for example to a laser diode array
  • a continuously diode-pumped slab laser system with Q-switching a maximum output energy of 1.8 mJ was achieved (cf.
  • KJ Snell et al Highly Efficient, Transversely-Pumped, 25W, TEM00 Nd: YLF Slab Laser, in: Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, Washington, DC, 2000), pp. 200-201).
  • disk lasers are furthermore known.
  • a thin disc for example, having a diameter of 10 mm and a thickness of 0.1 mm, applied directly to a heat sink.
  • heat can be removed very quickly, and thermal lens effects that cause deterioration of the beam quality of the generated laser radiation can be almost avoided.
  • the pumping light can pass through the crystal several times.
  • a high efficiency is achieved.
  • Disk lasers with a power output of 4 kW in a multimode beam are commercially available. In mode-locked laser systems, an average output power of 80 W was achieved (see Brunner et al., Opt. Lett., 29 (16), 1921 (2004)).
  • Fiber-lasers are furthermore known as diode-pumped solid-state laser systems.
  • Laser glasses can be pulled out to thin glass fibers.
  • the end faces of the glass fiber are mirrored on one side highly reflective for light of the emission wavelength of the laser active material and highly transmissive for light of the wavelength of the excitation beams.
  • On the other side of the glass fiber a multilayer system with the desired degree of decoupling is applied. Due to their large length, for example 10 m, the glass fibers have a large surface area, which allows very good heat dissipation.
  • single-mode fibers diffraction-limited fundamental mode radiation can be achieved. In continuous operation, output powers in the kilowatt range are achieved with high beam quality.
  • the diameter and thus the surface of the fiber core is limited to about 50 microns. Compared to bar fibers, the surface is therefore smaller by two to three orders of magnitude.
  • the energy density is therefore already at an impulse energy of 1 mJ at 80 J / cm 2 , which already reaches the range of the destruction threshold of the active laser material. Even with fiber end caps, only pulse energies of a few mJ can be achieved.
  • the document DE 102 35 713 A1 discloses a device for pump excitation of a laser medium via laser diode stacks.
  • a plurality of laser diode stacks which individually comprise a plurality of laser diode bars, are arranged around the optical axis at a distance from the optical axis of a resonator with the laser medium to be pumped.
  • the pump light emitted by the laser diode stacks is coupled into the laser medium via mirror arrangements at a small angle to the optical axis.
  • Document US 2003/0138005 A1 describes a solid-state laser system which is excited on an ion-longitudinal basis by means of a pulsed laser diode source.
  • a longitudinal pump excitation by means of laser diode arrangements is also known from document US 2004/0052284 A1.
  • the object of the invention is therefore to provide a solid-state laser system and a method for operating the solid-state laser system, with which high pulse energies can be generated and at the same time a high efficiency and good beam quality of the laser radiation generated can be achieved.
  • a solid state laser system having a longitudinal excitation configuration having the following features:
  • a laser medium which is arranged in a laser resonator and formed from a laser-active solid-state material, an excitation source having a laser diode array configured to generate pulsed excitation beams, and
  • a fiber launch means configured to couple the pulsed excitation beams from the excitation source along the optical axis of the laser cavity into the laser medium, the laser diode array being arranged to emit the pulsed excitation beams with a peak pulse power of at least 400W.
  • a method of operating a solid state laser system having a longitudinal excitation configuration comprising a lasing medium disposed in a laser resonator and formed of a solid state laser active material, the method comprising:
  • pulsed excitation beams are generated by an excitation source with a laser diode array, and the pulsed excitation beams from the excitation source are coupled into the laser medium along the optical axis of the laser cavity by means of fiber launching means emitting the pulsed excitation beams from the laser diode array with a peak pulse power of at least 400W become
  • the invention has the particular advantage over the prior art that a solid-state laser system is provided which can be produced by means of conventional, commercially available components. It has surprisingly been found that, in spite of the simple construction, very high pulse energies can be achieved.
  • the laser diode array By using the laser diode array, good match of the wavelength of the excitation beams with the absorption of the laser active material can be achieved.
  • the longitudinal pump configuration ensures good superposition of the excitation beams and the generated laser radiation, resulting in good beam profile and high efficiency. Due to the pulsed excitation, the one or more diodes (s) of the laser diode array can be operated with higher currents and higher output powers since the average thermal stress is greatly reduced.
  • the proposed solid-state laser system similarly high output energies are achieved in this way as with lamp-pumped laser systems, but with a much smaller energy requirement and with less effort for the cooling.
  • the generated laser radiation has a beam quality as can not be achieved with lamp-pumped laser systems of the same output energy.
  • the proposed pulsed longitudinal excitation also allows, especially in a rod-shaped design of the laser medium, that due to a completely coolable outer sheath of the rod-shaped laser medium, a uniform temperature distribution can be generated in the laser medium.
  • a laser rod holder By heating and / or cooling a laser rod holder, the strength of thermal lens effects and depolarization can be varied and adjusted.
  • the cross-sectional area of the laser medium used can be varied in relation to the pumped surface in order to vary and adjust thermal lens effects and depolarization.
  • the fiber coupling device leads to a homogenization of the excitation radiation and to a spatial separation of excitation source and solid-state laser crystal, so that the thermal load is reduced.
  • the solid-state laser is mechanically decoupled from the excitation source and can be easily moved as a compact unit.
  • the laser diode arrangement comprises one or more broad area multimode laser diode chips, which has the advantage of a high emitted power with a relatively low cost and a high lifetime of about 100,000 This results in a solid-state laser system with a relatively low cost and a long service life, which is a great advantage in the area of material processing where the processing systems are often used 24 hours a day known lamp-pumped laser systems must be replaced after a few hundred hours and lead to expensive interruptions in production.
  • the laser diode arrangement comprises a laser diode array with a plurality of wide-band laser diodes, whereby a high power can be achieved, which can be further increased by means of parallel connection of several broad-band emitters.
  • the beam quality is higher than that of the wide-range multimode laser diode chips. As a result, even higher efficiencies can be achieved than with the wide-range multimode laser diode chips.
  • the laser diode array has a laser diode chip stack.
  • a beam shaping device may be provided for shaping a transverse light distribution of the pulsed excitation beams during longitudinal excitation of the laser medium so that the pulsed excitation beams have a power density of at least 50 kW / cm 2 at a far field divergence angle of less than 0.6 rad exhibit.
  • Beamforming is more efficient than fiber coupling. On a coupling fiber can be dispensed with, and there is a cost reduction while avoiding coupling losses in the fiber.
  • an advantageous development of the invention provides that pulsed excitation beams having a pulse peak power of at least 1 kW, preferably of at least 2 kW, can be generated with the laser diode arrangement. This serves to achieve even higher output energies and powers.
  • the laser-active material is a material from the following group: garnets such as Nd: YAG, Nd: GSAG, Nd: YGG, Yb: YAG, Yb: GSAG, Yb: YGG, vanadate and Nd: GdVO 4 , Nd: YVO 4 , Yb: GdVO 4 , Yb: YVO 4 , double tungstate such as Nd: KGd (WO 4 ) 2) Nd: NaGd (WO 4 ) 2, Nd: KLa (WO 4 ) 2 , Yb: KGd (WO 4 ) 2 , Yb: NaGd (WO 4 ) 2) Yb: KLa (WO 4 ) 2 and Nd, Er or Yb doped crystals, glasses or ceramics. It is advantageous in one embodiment of the invention that the laser-active material is injection-seeded Nd: GSAG or injection-treated Nd: YGG.
  • Nd YAG is a standard material for solid state lasers with high efficiency, good heat conduction and high mechanical stability (hardness 8).
  • Nd doped vanadates have very high cross sections and can be even more efficient.
  • Yb doped materials and tungstates have a broadband emission, are thus tunable in their wavelength and are particularly suitable for generating short pulses by mode-locking.
  • the advantage is very long lifetimes (instead of 200 ⁇ s for Nd: YAG) of about 1 ms, which leads to particularly high pulse energies, even in QS mode.
  • the emission of Er is in the eye safe wavelength range. Glasses and ceramics represent flexibility in the shape of the laser medium, lower material costs and wider tunability (glass). Larger laser media can be realized than with crystals.
  • an active or a passive additional Q-switch is provided, so that a Q-switch operation can be performed, whereby a higher peak power, shorter pulses can be achieved.
  • the output power and the efficiency of the solid-state laser system are improved in a development of the invention in that a bilateral excitation configuration for the longitudinal excitation of the laser medium is formed.
  • the laser medium comprises a multi-rod system, whereby an increase in the active crystal length is achieved, resulting in a higher output power and energy. Furthermore, the thermal load similar to the fiber laser can be reduced.
  • a longitudinally pumped MOPA (Master Oscillator Power Amplifier) system is formed comprising a laser oscillator and one or more laser amplifiers.
  • MOPA Master Oscillator Power Amplifier
  • the advantage of the MOPA system is that Q-switching and frequency stabilization are achieved by means of a seed in a master laser with diffraction-limited beam quality at low pumping and output energies. When the output energy increases, the pulse duration, the frequency stability and the beam quality are maintained by means of a downstream amplifier, to which the main part of the pump / excitation power is omitted.
  • pulsed excitation beams for excitation periods of about 10 microseconds to about 10 ms are generated with the laser diode array.
  • the excitation periods are matched to the lifetime of the active ion.
  • FIG. 1 is a schematic representation of a solid-state laser system in which a laser medium formed in the form of a rod is excited by means of pulsed excitation beams, which are generated by a laser diode arrangement, wherein no additional Q-switch is provided;
  • Fig. 2 is a schematic representation of a solid-state laser system in which a laser medium formed in the form of a rod is excited by means of pulsed excitation beams which are generated by a laser diode arrangement, an additional Q-switch being provided;
  • Figure 3 is a schematic representation of a solid-state laser MOPA system having a master oscillator of Figures 1 and 2 and one or more post-amplifiers excited longitudinally by means of pulsed excitation beams generated by a laser diode array.
  • Fig. 5 is a plot of pulse energy versus pump energy for a Nd: YAG solid state laser system at a wavelength of 1064 nm;
  • Fig. 6 beam profile and beam quality from a measurement in a longitudinally pulsed excited system.
  • FIG. 1 shows a schematic representation of a solid-state laser system in which a laser medium 1 formed in the form of a rod and made of a laser-active material is pulsed
  • Excitation beams are generated, which are generated by means of a pump or excitation source 2, which comprises for generating the pulsed excitation beams, an arrangement with one or more laser diodes which are operated pulsed.
  • the excitation beams generated in the pump source 2 are collimated and focused by means of an optical component arrangement 3 and then pass through a mirror 4 into a laser resonator 5, where they strike the laser medium 1.
  • the mirror 4 is highly reflective for the laser radiation to be generated and transmitiv for the pulsed excitation beams.
  • a Auskoppelspiegel 7 the generated laser radiation is coupled out.
  • FIG. 2 shows a schematic illustration of a solid-state laser system in which a laser medium 1 formed in the form of a rod is excited by means of pulsed excitation beams which are generated by means of a pump source 2 designed as a laser diode arrangement.
  • a Q-switch 6 is furthermore arranged, which is an active or a passive Q-switch.
  • pump pulses having a length of 300 ⁇ s and a pulse peak power of 380 W were used with the aid of the pump source. In this way, output energies of 114 mJ were achieved, with the pump source 2 being fiber coupled with a fiber diameter of 600 ⁇ m and NA - 0.22.
  • Nd GSAG for the laser medium 1
  • an efficiency of 30% was achieved at a wavelength of 942 ⁇ m for the longitudinal diode-pumped solid-state laser system (see Fig. 4). Pulse energies of over 30 mJ were measured.
  • the laser active material used has a doping of 0.6%, a diameter of 4 mm and a length of 8 mm.
  • the active laser material used in the laser medium 1 was Nd: YAG. In this case, an efficiency of 57% was achieved, the measured pulse output energy was 65 mJ (see Fig. 5).
  • the laser active material used has a doping of 0.6%, a diameter of 4 mm and a length of 8 mm.
  • FIG. 3 shows a schematic representation of a solid-state laser MOPA system with a master oscillator according to FIGS. 1 and 2 and a post-amplifier 30, which are excited longitudinally by means of pulsed excitation beams which are generated by a laser diode arrangement.
  • the output mirror 7 is followed by an optical isolator 31, which prevents feedback into the laser resonator 5.
  • the post-amplifier 30 is pumped by means of a further pump source 32.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

L'invention concerne un système de laser à corps solide, à configuration d'excitation longitudinale, ainsi qu'un procédé permettant son fonctionnement. Le système de laser à corps solide présente les caractéristiques suivantes : un milieu laser (1) disposé dans un résonateur laser (5) et formé par un matériau constitué par un corps solide à activité laser, une source d'excitation (2) présentant un dispositif à diodes laser, configuré pour produire des rayonnements d'excitation pulsés, et un dispositif d'injection à fibres qui est configuré de manière à injecter, dans le milieu laser (1), les rayonnements d'excitation pulsés en provenance de la source d'excitation (2), le long de l'axe optique du résonateur laser (5), le dispositif à diodes laser étant conçu de manière à fournir des rayonnements d'excitation pulsés, présentant une puissance de pointes d'impulsions d'au moins 400 W.
PCT/DE2006/002027 2005-11-17 2006-11-17 Systeme de laser a corps solide et procede permettant son fonctionnement WO2007056999A2 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP05025085 2005-11-17
EP05025085.1 2005-11-17
DE102005059053 2005-12-08
DE102005059053.5 2005-12-08
DE200510060487 DE102005060487A1 (de) 2005-11-17 2005-12-15 Festkörperlasersystem und Verfahren zum Betreiben
DE102005060487.0 2005-12-15

Publications (2)

Publication Number Publication Date
WO2007056999A2 true WO2007056999A2 (fr) 2007-05-24
WO2007056999A3 WO2007056999A3 (fr) 2008-10-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048463A1 (de) * 2007-10-09 2009-04-23 Fachhochschule Münster Mehrschichtiges Lasermedium
WO2011063777A3 (fr) * 2009-11-26 2011-07-21 Eads Deutschland Gmbh Système amplificateur laser miniaturisé avec source de pompage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001069136A1 (fr) * 2000-03-10 2001-09-20 The Regents Of The University Of California Allumage laser

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001069136A1 (fr) * 2000-03-10 2001-09-20 The Regents Of The University Of California Allumage laser

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048463A1 (de) * 2007-10-09 2009-04-23 Fachhochschule Münster Mehrschichtiges Lasermedium
DE102007048463B4 (de) * 2007-10-09 2009-11-26 Fachhochschule Münster Mehrschichtiges Lasermedium mit im Querschnitt fünfeckiger Form
WO2011063777A3 (fr) * 2009-11-26 2011-07-21 Eads Deutschland Gmbh Système amplificateur laser miniaturisé avec source de pompage
US8457171B2 (en) 2009-11-26 2013-06-04 Eads Deutschland Gmbh Miniaturized laser amplifier arrangement having a pump source

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