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Fabrication of Efficient, Large Aperture Transmission Diffraction Gratings by Ion-Beam Etching.

DE200515013515

Publication Date	2000
Personal Author	Nguyen, H. T.; Bryan, S. R.; Britten, J. A.; Perry, M. D.
Page Count	18
Abstract	We have designed and produced a high-efficiency transmission gratings fabricated in bulk fused silica for in high-power laser systems. These gratings were designed to diffractively compress 1050 nm - 1070 nm light. We have obtained diffracted efficiencies greater than 95% for m = -1 order in a near-Littrow configuration for a 2 diameter substrate. In addition, we have produce a 65 cm diameter bulk fused silica transmission grating that exhibits diffracted efficiency in places greater than 82% for m= -1 order. While we have made significant advances towards developing the ability to produce master gratings at this size, there are still several outstanding technology issues to be addressed.
Keywords	Diffraction gratings Ion beam etching Pulsed power Inertial confinement Fused silica LLNL
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	200601

Fabrication of Efficient, Large Aperture Transmission Diffraction Gratings by Ion-Beam Etching.

Fabrication of Efficient, Large Aperture Transmission Diffraction Gratings by Ion-Beam Etching.
DE200515013515

Publication Date	2000
Personal Author	Nguyen, H. T.; Bryan, S. R.; Britten, J. A.; Perry, M. D.
Page Count	18
Abstract	We have designed and produced a high-efficiency transmission gratings fabricated in bulk fused silica for in high-power laser systems. These gratings were designed to diffractively compress 1050 nm - 1070 nm light. We have obtained diffracted efficiencies greater than 95% for m = -1 order in a near-Littrow configuration for a 2 diameter substrate. In addition, we have produce a 65 cm diameter bulk fused silica transmission grating that exhibits diffracted efficiency in places greater than 82% for m= -1 order. While we have made significant advances towards developing the ability to produce master gratings at this size, there are still several outstanding technology issues to be addressed.
Keywords	Diffraction gratings Ion beam etching Pulsed power Inertial confinement Fused silica LLNL
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	200601