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Comparison of Machining with Long-Pulse Green and Ultrashort Pulse Lasers.

DE200415007282

Publication Date	2001
Personal Author	Wynne, A. E.; Stuart, B. C.
Page Count	38
Abstract	LLNL measured the material removal rate from stainless steel, silicon carbide, rhenium, N5, hastalloy X, and titanium as a function of pulse fluence at a wavelength of 810 nm for pulse durations of 150 fs, 1.5 ps, 20 ps, and 500 ps. Measurements included electron microscopy of selected samples. The experiments in I were repeated for all materials but select pulse durations with the sample in a vacuum of base pressure 10 mTorr to determine if hole quality and ablation rate is improved. LLNL measured material removal rate from stainless steel, silicon carbide, rhenium, N5, hastalloy X, and titanium as a function of pulse fluence at a wavelength of 532 nm for pulse duration at 200 ns.
Keywords	Lasers Ablation Electron microscopy Machining Penetration Removal Rhenium Silicon carbides Stainless steels Thickness Titanium Wavelengths Lawrence Livermore National Laboratory
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200426

Comparison of Machining with Long-Pulse Green and Ultrashort Pulse Lasers.

Comparison of Machining with Long-Pulse Green and Ultrashort Pulse Lasers.
DE200415007282

Publication Date	2001
Personal Author	Wynne, A. E.; Stuart, B. C.
Page Count	38
Abstract	LLNL measured the material removal rate from stainless steel, silicon carbide, rhenium, N5, hastalloy X, and titanium as a function of pulse fluence at a wavelength of 810 nm for pulse durations of 150 fs, 1.5 ps, 20 ps, and 500 ps. Measurements included electron microscopy of selected samples. The experiments in I were repeated for all materials but select pulse durations with the sample in a vacuum of base pressure 10 mTorr to determine if hole quality and ablation rate is improved. LLNL measured material removal rate from stainless steel, silicon carbide, rhenium, N5, hastalloy X, and titanium as a function of pulse fluence at a wavelength of 532 nm for pulse duration at 200 ns.
Keywords	Lasers Ablation Electron microscopy Machining Penetration Removal Rhenium Silicon carbides Stainless steels Thickness Titanium Wavelengths Lawrence Livermore National Laboratory
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200426