Fast axis collimation for high power diode lasers

Kura, D.; Moser, H.; Langenbach, Eckhard; Forrer, Martin

doi:10.1109/hpd.2009.5365666

Cited by 6 publications

(3 citation statements)

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“…This situation is submitted to specific boundary conditions for limited available space in the array situation and material producability. Therefore we investigate the particular effect of vignetting losses in the beam twisting element, being one of the important performance limitations for the micro-optic setup [1][2][3][4][5] The Beam Twister (BT) is a cylindrical 1:1 Kepler beam expander. When put into a collimated beam it works as a mirror along the axis of the BT.…”

Section: Introductionmentioning

confidence: 99%

Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays

et al. 2015

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High power diode laser arrays need special micro-optic beamshaping to optimize for collimation and spot focusing. A known and established solution makes use of cylindrical micro-optics for fast axis collimation and subsequent individual twisting of each emitter beamlet by a micro-optic cylindrical telescope array in order to achieve a symmetric beam parameter product. A crucial factor for the overall performance is the achievable transmission to collimation and the fibercoupling efficiency. We present an optical analysis of vignetting effects on the transmission in the beam twisting setup and show an optimization which can be achieved by advanced micro-optic production technologies.

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Section: Introductionmentioning

confidence: 99%

Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays

et al. 2015

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“…Aspheric cylindrical lenses in high index precision glass can be tailor made in micro to macro dimension for optimum form accuracy of the aspheric surface and optimized to the respective task of the applications. In any case, the optical design of fast axis lenses and the coating design can be tailored either to a specific requirement or to a broader range of various requirements of the application [1,2] (see table 1). …”

Section: Introductionmentioning

confidence: 99%

Micro-optic solutions for beam shaping of individually addressable high-power single-mode diode laser arrays

2010

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Individually addressable high power single-mode diode laser arrays are an enabling technology for industrial applications. Precision micro-optics for beam-shaping and transfer of the laser emission to the application focus is giving access to free space diode laser functions not realized yet. Manufacturing and assembly of micro-optics therefore is analysed to be selected according to thorough optical analysis and concepts for minimized production cost.

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“…Aspheric cylindrical lenses in high index precision glass can be tailor-made in micro to macro dimension for optimum form accuracy of the aspheric surface and optimized to the respective task of the applications. Micro-optical cylindrical slow-axis lens arrays in standard quartz glass material are available in high precision in pitch and form accuracy by reflow lithography [4][5][6]. One target of huge benefit with high power diode laser applications is the power scalability based on modularity and compactness of the high-power diode laser concepts.…”

Section: Introductionmentioning

confidence: 99%

High Beam Quality and High Power Diode Laser Source

et al. 2013

AMR

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As the increasing applications of laser diodes in laser cladding and laser hardening, the single laser diode 0ptical power can not meet the actual requirements. An improvement of the power and Power densty necessary and it can be achieved by beam shaping and beam combination such as polarization coupling the polarization coupling technology is used to couple two laser beams with thin film plate polarizer In this paper two 880 nm vertical stacked arrays with an output power of l600 W was achieved After fast axils and slow axis collimated, the polarization direction of one stacked arrays is rotated 90 degree through a half wave plate, thus, the polarization directions of two laser stack are vertica1. The beams of two lasers are incident on the p1ate po1arizer, one transmits through it, and the other is reflected on it. Finally, two beams combine to one. Polarization coupling of two bars increases the power by a factor of 1.6, and the output power is 2500 W, electro optical conversion efficiency is more than 48%. The spot size is about2 mm x 2 mm. This laser can be directly applied to cladding, surface hardening and other fields.

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Fast axis collimation for high power diode lasers

Cited by 6 publications

References 0 publications

Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays

Beam vignetting effect in micro-optic collimation and transmission for high power diode laser arrays

Micro-optic solutions for beam shaping of individually addressable high-power single-mode diode laser arrays

High Beam Quality and High Power Diode Laser Source

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