Adds function to convert a delay stage motor position into time

Laser_utils.py

+def positionToDelay(data, key, origin=0, invert = False, reflections=1):
+    ''' converts a motor position in mm into optical delay in picosecond
+        Inputs:
+            data: dataset containing delay stage motor position
+            key: key of the delay stage
+            origin: motor position of time zero in mm
+            invert: bool, inverts the sign of delay if True
+            reflections: number of bounces in the delay stage
+
+        Output:
+            delay in picosecond
+    '''
+    c_ = 299792458 *1e-9 # speed of light in mm/ps
+    x = -1 if invert else 1
+    return 2*reflections*(data[key]-origin)*x/c_
\ No newline at end of file

__init__.py

@@ -2,3 +2,4 @@ from ToolBox.Load import *
 from ToolBox.xgm import *
 from ToolBox.XAS import *
 from ToolBox.knife_edge import *
+from ToolBox.Laser_utils import *