== Overview ==
 1. We will be removing the MOPA and replacing it with a 2W NPRO.
 1. Instead of current shunt, we will change to use an AOM for the fast power stabilization actuator.
 1. We may decide to use a DC coupled servo, with a remotely programmable offset point to be more like the aLIGO system.
 1. Move the reference cavity and its optics to a different pickoff point.
 1. Move the ISS to the end of the PSL table.
 1. Re-engineer the optics for the PSL_POS and PSL_ANG QPDs.
 1. New EOM for triple modulation.
 1. Change the FSS modulation frequency?
 1. Change the FSS RFPD to have a low Q?
 1. Remove the PMC RF modulation (apply it via the NPRO)?
 1. Steel enclosure for the PMC to do temperature stabilization?

[[Upgrade 09/PSL|{{attachment:newlayout.png||height=600}}]]<<BR>>

=== FSS ===

=== New NPRO ===

[[attachment:2W_INNOLIGHT_manual.pdf|2W Innolight manual (PDF)]]

[[attachment:2W_INNOLIGHT_data_sheet.pdf|2W Innolight data sheet (PDF)]]

[[attachment:2W_INNOLIGHT_item_list.pdf|2W Innolight item list (PDF)]]

 * P-I curve
[["Upgrade 09/PSL"|{{attachment:PvsI_2W.jpg}}]]<<BR>>

=== PMC ===

=== ISS ===

=== Modulator ===