Abstract : Laser systems with nonorthogonal eigenmodes have a linewidth that is broader than the usual Schawlow- Townes value, by a factor that is known as the Petermann excess noise factor. In a recent quantum analysis, this excess noise was attributed to loss-induced coupling betwen the laser modes. Using the same approach, we show here that the Petermann excess noise also appears on the laser quantum intensity noise. The calculation is shown to be in good agreement with an experiment using a laser diode with two contributing transverse modes.
https://hal-iogs.archives-ouvertes.fr/hal-00554291
Contributor : Philippe Grangier <>
Submitted on : Monday, January 10, 2011 - 3:43:52 PM Last modification on : Wednesday, September 16, 2020 - 5:43:27 PM Long-term archiving on: : Monday, April 11, 2011 - 4:22:03 PM