slow development of my asc example.

examples/asc_test/master.py

 from pykat import finesse
 from pykat.commands import *
 import pylab as pl
+import copy
 
 print """
 --------------------------------------------------------------
@@ -23,6 +24,8 @@ kat = finesse.kat(tempdir=".",tempname="test")
 kat.verbose = False
 kat.loadKatFile('asc_base.kat')
 kat.maxtem=3
+Lambda=1064.0e-9
+
 
 print "--------------------------------------------------------"
 print " 1. tunes ETM position to find resonance"
@@ -39,6 +42,30 @@ print " 3. determine the optimal phase for the PDH signal"
 import asc_pd_phase
 (p_phase, q_phase) = asc_pd_phase.run(kat)
 
+# setting demodulation phase
+code_det = """
+pd1 PDrefl_p 9M 0 nWFS1
+scale 2 PDrefl_p
+pd1 PDrefl_q 9M 90 nWFS1
+scale 2 PDrefl_q
+"""
+kat.parseKatCode(code_det)
+kat.PDrefl_p.phi[0]=p_phase
+kat.PDrefl_q.phi[0]=q_phase
+
+print "--------------------------------------------------------"
+print " 4. adding a 0.1nm offset to ETM and compute PDH signal"
+phi0=kat.ETM.phi
+kat.ETM.phi=phi0 + 0.1/1064.0*360
+print " new ETM phi tuning = %g " % kat.ETM.phi
+
+import asc_pd_signal
+(pd_p, pd_q) = asc_pd_signal.run(kat)
+print " PDH inphase     = %e " % pd_p
+print " PDH quadrtature = %e " % pd_q
+
+
+
 
 
 

pykat/finesse.py

@@ -138,8 +138,8 @@ class kat(object):
 
     def logo(self):
         print """                                              ..-
-                          _                  '(
-    PyKat                 \\`.|\\.__...-\"\"""-_." )
+    PyKat                 _                  '(
+                          \\`.|\\.__...-\"\"""-_." )
        ..+-----.._        /  ' `            .-'
    . '            `:      7/* _/._\\    \\   (
   (        '::;;+;;:      `-"' =" /,`"" `) /