Measurement of a Stochastic Gravitational Wave Background with a Single   Laser Interferometer
  Laser interferometer gravitational wave detectors can be operated at their free spectral range frequency. We show that in this case and when the interferometer is well understood one could detect a stochastic background using a single detector. 
Adrian C. Melissinos and William E.Butler (Department of Physics and   Astronomy University of Rochester, Rochester NY)