1 files changed, 7 insertions, 0 deletions
diff --git a/Source/Particles/LaserParticleContainer.cpp b/Source/Particles/LaserParticleContainer.cpp
index a8df886be..94e67065d 100644
--- a/Source/Particles/LaserParticleContainer.cpp
+++ b/Source/Particles/LaserParticleContainer.cpp
@@ -99,6 +99,13 @@ LaserParticleContainer::LaserParticleContainer (AmrCore* amr_core, int ispecies,
     getArrWithParser(pp_laser_name, "direction", m_nvec);
     getArrWithParser(pp_laser_name, "polarization", m_p_X);
 
+    WARPX_ALWAYS_ASSERT_WITH_MESSAGE(m_position.size() == 3,
+        m_laser_name + ".position must have three components.");
+    WARPX_ALWAYS_ASSERT_WITH_MESSAGE(m_nvec.size() == 3,
+        m_laser_name + ".direction must have three components.");
+    WARPX_ALWAYS_ASSERT_WITH_MESSAGE(m_p_X.size() == 3,
+        m_laser_name + ".polarization must have three components.");
+
     getWithParser(pp_laser_name, "wavelength", m_wavelength);
     AMREX_ALWAYS_ASSERT_WITH_MESSAGE(
         m_wavelength > 0, "The laser wavelength must be >0.");