Laser beam combining for high-power, high-radiance sources
Объединение лазерных пучков для источников высокой мощности и высокой яркости
2005-05-01
SCID: 54.1/a7k4f5bv
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coherent beam combininghigh-power laser sourceshigh-radiance sourceslaser beam combiningspectral beam combining
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Abstract (AI)
Beam combining of laser arrays with high efficiency and good beam quality for power and radiance (brightness) scaling is a long-standing problem in laser technology. Recently, significant progress has been made using wavelength (spectral) techniques and coherent (phased array) techniques, which has led to the demonstration of beam combining of a large semiconductor diode laser array (100 array elements) with near-diffraction-limited output (M/sup 2//spl sim/1.3) at significant power (35 W). This paper provides an overview of progress in beam combining and highlights some of the tradeoffs among beam-combining techniques.
Key Findings
1
A 100-element semiconductor diode laser array was combined into a near-diffraction-limited beam with M² ≈ 1.3 at 35 W output power.
2
Beam combining is used to scale laser-array power and radiance while preserving high efficiency and good beam quality.
3
Beam-combining techniques involve tradeoffs among efficiency, beam quality, power scaling, and radiance, which the paper reviews.
4
Wavelength (spectral) and coherent (phased-array) techniques have recently enabled substantial progress in high-power beam combining.
Research Object
laser arrays, particularly large semiconductor diode laser arrays
Research Subject
beam-combining techniques for scaling laser power and radiance while maintaining high efficiency and good beam quality, including their tradeoffs
Publication Details
Publication Date
2005-05-01
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