Laser-material interactions with short-wavelength infrared lasers

Joeckle, R.; Gautier, Bernard; Nett, Johann; Stevens, Martin; Sontag, Andre; Stern, Gerard

doi:10.2514/6.1995-1921

Cited by 6 publications

(2 citation statements)

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“…7. Joecklé et al 4 found that the absorptivity of iron was approximately 3% higher than stainless steel at 1.06 mm. Therefore it is reasonable to assume that a likely absorptivity range for carbon steel (similar to iron) will be a few percent higher than stainless steel, probably in the range 0.30 to 0.55.…”

Section: Comparison and Modification To Theoretical Modelmentioning

confidence: 99%

“…1 Other laser technologies which are still evolving for materials processing applications are CO, excimer, HF/DF and the chemical oxygen-iodine laser (COIL). [2][3][4] Of these other laser technologies, COIL is of particular interest because of its short wavelength (1.315 mm), high scalable continuous wave (cw) power, and excellent beam quality (due to very small density gradients in its laser cavity).…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of cutting thick aluminum and steel with a chemical oxygen–iodine laser using an N2 or O2 gas assist

Carroll

Rothenflue

1997

Journal of Laser Applications

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A chemical oxygen-iodine laser (COIL) was used for cutting aluminum and carbon steel. Cut depths of 20 mm were obtained in aluminum and 41 mm in carbon steel using an N 2 gas assist and 5-6 kW of power on target. The same laser at the same power level produced a cut depth of 65 mm in carbon steel with an O 2 gas assist; a low quality cut to a depth of nearly 100 mm in carbon steel was demonstrated. These data are compared with existing COIL and CO 2 laser cutting data. COIL cuts carbon steel and stainless steel at approximately the same rate. For a given cut depth, power and spot size, COIL cuts steel approximately three times faster than a CO 2 laser using an inert gas assist. COIL cutting speeds in carbon steel are improved by approximately a factor of three when an O 2 assist is used in lieu of an N 2 gas assist. With an N 2 gas assist, COIL cuts aluminum at approximately the same rate as CO 2 cuts steel. To improve the agreement between data and an existing theoretical cutting model, an empirical correction factor was added to the model; this modification provides excellent agreement with data.

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Section: Comparison and Modification To Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%