DiFracTION Grating

SPECIFICATIONS
• Active area: up to 1005mm x 600mm
• Spatial Frequency: 50 to 5000 lns/mm
• Grating Type: MLD, Etch Phase Grating (Transmission), or Metal (Gold, Alluminum…)
• Wavefront Distortion : < λ/4 (depending on aspectratio)
• Diffraction Efficiency: 90% to 96% Typically
• Fabricate gold gratings over photoresist or metal over etched silica for broadband applications
• Frame and optical mount to minimize stress induced deformations on demand

Laser-pulse

GOLD GRATING
• Diffraction efficiency >90%
• High bandwidth (100-175 nm)
• Low diffracted wavefront
• Lower Damage Threshold

MLD GRATING
• High diffraction efficiency >95% tipically
• Low bandwidth (30-40 nm)
• Low diffracted wavefront

SBIL
Scanning Beam
Interference Lithography

ESSENTIAL
• Nanoruler use
• Highly accurate linewidth
• Excellent diffraction efficiency
• Focusing or chirped gratings
• Excellent dose control on the photoresist

SBIL

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ARDOP - Optics & Optoelectronics
Cité de la Photonique,
11 Avenue de la Canterranne
33600 Pessac - FRANCE

phone +33 1 69 63 26 09
fax + 33 1 69 63 93 44
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