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Entry  Fri Oct 1 12:01:24 2021, Paco, General, Design specs, TM Barrel coating emissivity stack_1.pdfstack_2.pdfstack_3.pdfinterpolated_n_k.pdf
    Reply  Fri Oct 1 13:24:40 2021, Aidan, General, Design specs, TM Barrel coating emissivity 
       Reply  Fri Oct 1 14:11:23 2021, Paco, General, Design specs, TM Barrel coating emissivity stack_1.pdfstack_2.pdfstack_3.pdf
Message ID: 34     Entry time: Fri Oct 1 12:01:24 2021     Reply to this: 35
Author: Paco 
Type: General 
Category: Design specs 
Subject: TM Barrel coating emissivity 

[Paco, Nina, Aidan]

We ran our stack emissivity calculation on different AR stacks to try and make a decision for the TM barrel coatings. This code has yet to be validated by cross checking against tmm as suggested by Chris. The proposed layer structures by Aidan and Nina are:

  1. *| Air || SiO2 x 800 nm || Ta2O5 x 5 um || Silicon |*
  2. *| Air || Ta2O5 x 10 um || Sio2 x 20 nm || Silicon |*
  3. *| Air || SiO2 x 100 nm || TiO2 x 1 um || Silicon |*

Attachments # 1-3 show the emissivity curves for these simple dielectric stacks. Attachment #4 shows the extinction coefficient data used for the three different materials. The next step is to validate these results with tmm, but so far it looks like TiO2 might be a good absorbing film option.

Attachment 1: stack_1.pdf  99 kB  Uploaded Fri Oct 1 13:29:56 2021  | Hide | Hide all
stack_1.pdf
Attachment 2: stack_2.pdf  99 kB  Uploaded Fri Oct 1 13:30:29 2021  | Hide | Hide all
stack_2.pdf
Attachment 3: stack_3.pdf  98 kB  Uploaded Fri Oct 1 13:33:53 2021  | Hide | Hide all
stack_3.pdf
Attachment 4: interpolated_n_k.pdf  66 kB  Uploaded Fri Oct 1 14:22:59 2021  | Hide | Hide all
interpolated_n_k.pdf
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