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<h2>05/16/06 Experiments and Analysis</h2> Conclusions I suggest replacing the M2 mirror with an enhanced aluminum version, such as CVI part EAV-PM-4050-C ($730). This will get rid of the red dropout, and has >99% reflectivity for S pol 589 nm. The red data suggests there may be a yellow dropout on the current mirror. We have no data on this yet, but it may be prudent to get a mirror on order. The EAV mirror will also eliminate the need for a backstop on M2, as there should be no appreciable light leak through it. The similarity of the polynomial fits between the two runs suggests that writing a correction equation as John Angione has requested would work. * [[%ATTACHURL%/BTO_2006_05_16_v1.pdf][BTO_2006_05_16_v1.pdf]]: BTO_2006_05_16_v1.pdf <h3>Follow-up</h3> AB: The following parts were ordered on 5/25/06: Newport Corporation Part: 40D20.ER1 (Broadband Metallic Mirrors, 4" diameter, Pyrex, 1/10 wave surface, enhanced aluminum coating) Price: $440 Count: 1 Part: 40Z40.ER1 (Broadband Metallic Mirrors, 4" diameter, Zerodur, 1/20 wave surface, enhanced aluminum coating) Price: $686 Count: 1
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Topic revision: r1 - 2006-06-04
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AntoninBouchez
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