Make energy calibration the default (#96)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.gitignore

@@ -3,6 +3,10 @@ __pycache__/
 *.py[cod]
 *$py.class
 
+# Data files
+*.h5
+*.hdf5
+
 # C extensions
 *.so
 

lasy/laser.py

@@ -70,17 +70,17 @@ def __init__(self, dim, lo, hi, npoints, profile, n_azimuthal_modes=1):
             # Perform the azimuthal decomposition
             self.field.field[...] = np.fft.ifft(envelope, axis=0)
 
-    def normalize(self, value, kind=None):
+    def normalize(self, value, kind="energy"):
         """
         Normalize the pulse either to the energy, peak field amplitude or peak intensity
 
         Parameters
         ----------
         value: scalar
             Value to which to normalize the field property that is defined in 'kind'
-        kind: string
+        kind: string (optional)
             Distance by which the laser pulse should be propagated
-            Options: 'energy', 'field', 'intensity'
+            Options: 'energy', 'field', 'intensity' (default is 'energy')
         """
 
         if kind == "energy":