Bto_060516 < Palomar/PalmLGS

<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

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
pdf	BTO_2006_05_16_v1.pdf	r1	manage	312.1 K	2006-06-04 - 22:01	UnknownUser

This topic: Palomar/PalmLGS > Bto_060516
Topic revision: r1 - 2006-06-04 - AntoninBouchez