Pure and technology imposed diffraction effects in a slotted micro mirror

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Pure and technology imposed diffraction
effectsin a slotted micro mirror

• Svein Husa
• E-mail svein.husa_at_hive.no

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OutlineCalculation and measurement of
diffraction effects.

• Why making a segmented mirror?
• Pros
• Cons
• Experiments
• Ideal structure
• Real structure
• Technology effects
• Conclusion

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This is a slotted micro mirror
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Pros scaling effects
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Diffraction from unslotted mirrorOne 1050µm wide
mirror
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Ideal reference7 x 140µm 10 µm
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What do we get?Slotted mirror 7 x 140µm 10 µm

• Dette er punkttittel
• Her er punktnivå 2

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Technology imposed effects
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Effects of shift in surface levelPhase shift of
240 models the groove.
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Conclusion

• Due to technology effects we get this
• Instead of this
• Her er punktnivå 2