Macro-channel cooled high power fiber coupled diode lasers exceeding 1.2kW of output power

Koenning, Tobias; Alegria, Kim; Wang, Zuolan; Segref, Armin; Stapleton, Dean; Faßbender, Wilhelm; Flament, Marco; Rotter, Karsten; Noeske, Axel; Biesenbach, Jens

doi:10.1117/12.875795

Cited by 10 publications

(9 citation statements)

References 3 publications

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“…Because this technology can be used to increase the diode laser output power, high-power diode laser can be compared favorably in surface cladding field with CO 2 and Nd:YAG laser [3][4][5][6][7][8][9][10] .…”

Section: B the Experimental Results And Analysismentioning

confidence: 99%

KW-output high beam quality diode laser array source

Shan

Zhang

Peng

et al. 2012

2012 International Conference on Optoelectronics and Microelectronics

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With the advantages of small volume, light weight, high efficiency and long lifespan, diode laser has been widely applied to industrial processing. Presently, for laser used as processing light source needs to amount to dozens of KW per cm2 of power density, how to increase power output and get smaller light spot for diode laser becomes a key problem. It is introduced that by designing beam shaping by ourselves and making use of optical system for beam blooming and focusing, 808nm laser array composed of 20 bars eventually achieves the 1001.5w power output, coupling efficiency at 90%, 1x1mm2 of light spot through experiments, which enables diode laser to be directly applied to cladding, welding and so on.

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Section: B the Experimental Results And Analysismentioning

confidence: 99%

KW-output high beam quality diode laser array source

Shan

Zhang

Peng

et al. 2012

2012 International Conference on Optoelectronics and Microelectronics

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“…The diode laser stacks are usually cooled by the mature technology of microchannels thermal dissipation, hence, we only discuss the cooling of the optical elements in this paper [14,15]. The local temperature of the lenses will be increased under the powerful laser radiation.…”

Section: Design Of Thermal Dissipation Structurementioning

confidence: 99%

Development and thermal management of 10kW CW, direct diode laser source

Zhu

Hao²,

Zhang

et al. 2016

Optics & Laser Technology

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“…(1). [28][29][30][31][32] Guaranteeing an efficient fiber coupling: BPP total <BPP fiber , is only possible if the symmetrization of BPPs in both axes is achieved.…”

Section: Optical System Designmentioning

confidence: 99%

Optical design and development of a fiber coupled high-power diode laser system for laser transmission welding of plastics

et al. 2012

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Laser transmission welding (LTW) of thermoplastics is a direct bonding technique already used in different industrial applications sectors such as automobiles, microfluidics, electronics, and biomedicine. LTW evolves localized heating at the interface of two pieces of plastic to be joined. One of the plastic pieces needs to be optically transparent to the laser radiation whereas the other part has to be absorbent, being that the radiation produced by high power diode lasers is a good alternative for this process. As consequence, a tailored laser system has been designed and developed to obtain high quality weld seams with weld widths between 0.7 and 1.4 mm. The developed laser system consists of two diode laser bars (50 W per bar) coupled into an optical fiber using a nonimaging solution: equalization of the beam parameter product (BPP) in the slow and fast axes by a pair of step-mirrors. The power scaling was carried out by means of a multiplexing polarization technique. The analysis of energy balance and beam quality was performed considering ray tracing simulation (ZEMAX®) and experimental validation. The welding experiments were conducted on acrylonitrile/butadiene/styrene (ABS), a thermoplastic frequently used in automotive, electronics and aircraft applications, doped with two different concentrations of carbon nanotubes (0.01% and 0.05% CNTs). Quality of the weld seams on ABS was analyzed in terms of the process parameters (welding speed, laser power and clamping pressure) by visual and optical microscope inspections. Mechanical properties of weld seams were analyzed by mechanical shear tests. High quality weld seams were produced in ABS, revealing the potential of the laser developed in this work for a wide range of plastic welding applications.

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Macro-channel cooled high power fiber coupled diode lasers exceeding 1.2kW of output power

Cited by 10 publications

References 3 publications

KW-output high beam quality diode laser array source

KW-output high beam quality diode laser array source

Development and thermal management of 10kW CW, direct diode laser source

Optical design and development of a fiber coupled high-power diode laser system for laser transmission welding of plastics

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