2017-05-29
cavity pole measurement
modulated laser amplitude from 1kHz to 300kHz 
measured the transfer function from excitation signal to FSS error signal(TTFSS OUT1) with network analyzer

TG_0529_1
TP_0529_1

2017-06-06
setup
laser current : 1.997 A
Xtal temp : 23.37 deg.

lock FSS only with PZT
cmmon 1000
fast 680

function generator-(-40dB attenator)-SR560(PZT servo)
V2(after SR560(PZT servo)):-52.073dB
Verr(common OUT1):-49.748dBVrms

06/05
set up
laser curent 1.997A
temperature 22.92degree

#KORCH filter ON
feedback signal measurement
SR560(gain x1)-FFT
F0607_5 : SR560 : gain 1, bandpath 1kHz-1MHz
F0607_6 : SR560 : gain 1, bandpath 100Hz-100kHz
F0607_7 : SR560 : gain 1, bandpath 10Hz-10kHz
F0607_8 : SR560 : gain 1, bandpath 1Hz-1kHz

#KORCH filter OFF
feedback signal
SR560 (gain x1)->FFT
F0607_9 : SR560 : gain 1, bandpath 1kHz-1MHz
F0607_10 : SR560 : gain 1, bandpath 100Hz-100kHz
F0607_11 : SR560 : gain 1, bandpath 10Hz-10kHz
F0607_12 : SR560 : gain 1, bandpath 1Hz-1kHz
		
		
Open loop gain measurement
FSS gain: 
 common 334
fast 270
		
OG0607_17:
1kHz~50KHz
OG0607_18
10kHz~1MHz Gain
OP: Phase


error signal
OUT2 -> SR560 -> FFT
E0607_18 : SR560 : gain 100, bandpath 1kHz-1MHz
E0607_19 : SR560 : gain 100, bandpath 100Hz-100kHz
E0607_20 : SR560 : gain 100, bandpath 10Hz-10kHz
E0607_21 : SR560 : gain 100, bandpath 1Hz-1kHz

#Transfer function meas.
test -> fast out1
Gain Common dial : 1000
                Fast dial :1000
file name: 060724TP and TG

test -> fast out2
Gain common dial: 1000
                Fast dial :1000
file name: 060725TP and TG


#Servo electronic noise meas.
test input : short
fast -> SR560 (CPL: AC)
Gain common dial: 1000
                Fast dial :1000
E0607_27 : with BPF 1k -1MHz, Gain x10
E0607_28:   w BPF   100Hz - 100kHz, Gain x10
E0607_29:  w BPF     10Hz - 10kHz, G=10
E0607_30:  w BPF     1Hz - 1kHz, G=10