High-brightness fiber-coupled single emitter arrays

Heinemann, Stefan; Regaard, Boris; Schmidt, Thorsten; Lewis, Ben

doi:10.1117/12.805620

Cited by 2 publications

(2 citation statements)

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“…In order to get maximum efficiency, bundle dimensions should be as small as possible, which places restrictions on minimum jacketing and cladding thickness [101]. Design and fabrication of optical fiber couplers for diode arrays have been studied in the literature [102][103][104][105], and high-power diode lasers with fiber coupling are commercially available with optical powers up to 200 W [106]. However, if there is a mismatch be-tween the modes of the array emitters and the optical fiber, this approach is not efficient and results in reduced brightness.…”

Section: B Laser Beam Shaping Of Multiemitter Lasersmentioning

confidence: 99%

Laser-based displays: a review

2010

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After the invention of lasers, in the past 50 years progress made in laser-based display technology has been very promising, with commercial products awaiting release to the mass market. Compact laser systems, such as edge-emitting diodes, vertical-cavity surface-emitting lasers, and optically pumped semiconductor lasers, are suitable candidates for laser-based displays. Laser speckle is an important concern, as it degrades image quality. Typically, one or multiple speckle reduction techniques are employed in laser displays to reduce speckle contrast. Likewise, laser safety issues need to be carefully evaluated in designing laser displays under different usage scenarios. Laser beam shaping using refractive and diffractive components is an integral part of laser displays, and the requirements depend on the source specifications, modulation technique, and the scanning method being employed in the display. A variety of laser-based displays have been reported, and many products such as pico projectors and laser televisions are commercially available already.

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Section: B Laser Beam Shaping Of Multiemitter Lasersmentioning

confidence: 99%

Laser-based displays: a review

2010

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“…Fiber-coupled laser-diode (LD) modules for small-core fibers consistently use single-emitters as the light sources [1][2][3][4][5][6] . Due to their individual nature, single emitters can be mechanically-positioned precisely and can be selected for high performance and reliability.…”

Section: Introductionmentioning

confidence: 99%

Record CW-brightness from a single 20% fill-factor 1-cm laser-diode bar at 20°C

Chin¹,

Knapczyk

Jacob

et al. 2011

SPIE Proceedings

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A record, 250W, CW output-power has been achieved for a single, 1cm-wide, 3.5mm cavity-length, 20% fill-factor, 976nm, laser-diode bar operated at 20°C. The remarkable laser-bar performance was in part the result of a novel EPIC (Enhanced Performance Impingement Cooler) heat-sink with a thermal resistance of 0.16K/W. The superb thermal management resulted in record brightness for a laser bar, i.e. a slow-axis divergence of 10° (95% power containment angle) was achieved at 200W output-power. A coupling efficiency of ~74% into a 200μm core, 0.22NA fiber was achieved.

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High-brightness fiber-coupled single emitter arrays

Cited by 2 publications

References 0 publications

Laser-based displays: a review

Laser-based displays: a review

Record CW-brightness from a single 20% fill-factor 1-cm laser-diode bar at 20°C

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