= REFL33 =
== Modification history ==
 * Previously used as MZ 29.5MHz PD
 * Aug 1, 2011 built by Koji
  * http://nodus.ligo.caltech.edu:8080/40m/5086
 * Aug 8, 2011 characterized by Koji
  * http://nodus.ligo.caltech.edu:8080/40m/5113

== Schematic ==
[[attachment:REFL33_response.pdf|PDF file]]

== Characteristics ==
 * DC output / transimpedance: 50 V/A
 * RF output / transimpedance: 2.14 kV/A (on a 50 Ohm load)
 * RF ouput / shotnoise intercept current: 0.52mA

[[attachment:REFL33_response.pdf|PDF file]]

{{attachment:REFL33_transimpedance.png}}

{{attachment:current_noise_REFL33.png}}

{{attachment:idet_REFL33.png}}

== LISO fitting ==

LISO fitting of the RF transimpedance

[[attachment:REFL33.fil]]

LISO source file
{{{
zero 48.4837164240k  ### fitted (name = zero0)
zero 47.6421904694k  ### fitted (name = zero1)
zero 10.9677397339M 22.3419521997  ### fitted (name = zero2)
zero 55.5961765151M 42.4503277372  ### fitted (name = zero3)
zero 332.3872462316M 267.3831513309m  ### fitted (name = zero4)
zero 1.4185960343M 3.9956647440  ### fitted (name = zero5)
pole 153.7417214199k  ### fitted (name = pole0)
pole 11.5953450163M 2.5461490451  ### fitted (name = pole1)
pole 33.1799930023M 6.0103029642  ### fitted (name = pole2)
pole 62.3400075908M 6.5498896913  ### fitted (name = pole3)
pole 301.7039940564M 3.0443589747  ### fitted (name = pole4)
pole 79.9674384577M 552.7732144606m  ### fitted (name = pole5)
pole 670.8664623563k 2.3150918157  ### fitted (name = pole6)

factor 780.8469757726m  ### fitted
delay 0.3586979414f  ### fitted

param zero0:f 10k 100M
param zero1:f 10k 10G
param zero2:f 10M 100M
param zero2:q  0.1 100
param zero3:f 10M 1000M
param zero3:q  0.1 100
param zero4:f 1M 1000M
param zero4:q  0.1 100
param zero5:f 1k 1000M
param zero5:q  0.1 1G
param pole0:f 0k 1G
param pole1:f 0 1000M
param pole1:q  0.1 1000
param pole2:f 10M 100M
param pole2:q  0.1 100
param pole3:f 10M 100M
param pole3:q  0.1 100
param pole4:f 10M 1000M
param pole4:q  0.1 100
param pole5:f 10M 1000M
param pole5:q  0.1 100
param pole6:f 1k 10000M
param pole6:q  0.1 100

param factor 1p 1M
param delay 0 1m

fit REFL33.bod absdeg rel
rewrite samebetter
gnuterm pdf
freq log 100k 500M 2000 ### from data file
}}}